The Dell Compellent Series 40 storage array offers exceptional performance and scalability for your demanding business applications. With its advanced features like auto-tiering, thin provisioning, and snapshots, you can optimize storage utilization, reduce costs, and improve data protection. The Series 40 also provides flexible connectivity options, including Fibre Channel and iSCSI, making it easy to integrate into your existing infrastructure.
The Dell Compellent Series 40 storage array offers exceptional performance and scalability for your demanding business applications. With its advanced features like auto-tiering, thin provisioning, and snapshots, you can optimize storage utilization, reduce costs, and improve data protection. The Series 40 also provides flexible connectivity options, including Fibre Channel and iSCSI, making it easy to integrate into your existing infrastructure.
Storage Center 6.7 Release Notes
This document describes the new features, enhancements, and known issues in Storage Center 6.7.
Current Version: 6.7.50
Release Date: 2018 - 03
Previous Version: 6.7.40
Topics:
• Revision History
• Storage Center 6.7 Feature Availability and Licenses
• Storage Center 6.7 Scalability
• System Manager Requirements
• New in This Release
• Storage Center Fixed Issues
• Known Issues
• Storage Center Update Information
Revision History
Document Number: 680-021-017
Revision
Date Description
A October 2015 Initial release
B October 2015 Added the Import Volumes from PS Series Storage Arrays feature description
C October 2015 Added information about the SC9000 controller
D November 2015 Updated for Storage Center 6.7.3
E December 2015 Updated for Storage Center 6.7.4
F February 2016 Updated for Storage Center 6.7.5
G February 2016 Removed information about SCv2000 series
H June 2016 Updated for Storage Center 6.7.10
I June 2016 Updated for Storage Center 6.7.11
J August 2016 Updated for Storage Center 6.7.20
K November 2016 Updated for Storage Center 6.7.22
L December 2016 Updated for Storage Center 6.7.30
M April 2017 Updated for Storage Center 6.7.40
N May 2017 Added one Fixed Issue and claried Live Volume with Automatic Failover availability
O March 2018 Updated for Storage Center 6.7.50
Document Number: 680-021-017
Rev. P
2018 - 09
Storage Center 6.7 Release Notes 1
Revision Date Description
P September 2018 Add feature license options for CT-SC040
Storage Center 6.7 Feature Availability and Licenses
The core licenses and support for optional licensed features varies depending on the storage system.
Table 1. Licensed Features
Storage System Licensed Features
SC9000
SC9000 storage systems provide a Core Software bundle and optional value-add bundles.
Core Software Bundle
• Data Compression
• Data Instant Replay (Snapshots)
• Dynamic Capacity
• Dynamic Controllers
• Enterprise Manager
• Local Data Protection
• Multi-VLAN Tagging
• Virtual Ports
SC9000 storage systems support these optional licenses:
• Replay Manager
• Data Progression
• Enterprise Manager Chargeback
• Live Volume
• Remote Instant Replay (Replication)
• SED FIPS Secure Data
Storage Protection Bundle
• Replay Manager
• Live Volume
• Remote Instant Replay
Storage Optimization Bundle
• Data Progression
• Fast Track
Total Feature Bundle
• SED FIPS Secure Data
• Storage Optimization Bundle
• Storage Protection Bundle
SC8000
SC8000 storage systems provide the following licensed features:
• Data Compression
• Data Instant Replay (Snapshots)
• Dynamic Capacity
• Dynamic Controllers
• Enterprise Manager
• Local Data Protection
2 Storage Center 6.7 Release Notes
Storage System Licensed Features
• Multi-VLAN Tagging
SC8000 storage systems support these optional licenses:
• Replay Manager
• Data Progression
• Enterprise Manager Chargeback
• Fast Track
• Live Volume
• Remote Instant Replay (Replication)
• SED FIPS Secure Data
• Virtual Ports
SC4020 SC4020 storage systems provide the following licensed features:
• Data Compression
• Data Instant Replay (Snapshots)
• Dynamic Capacity
• Dynamic Controllers
• Enterprise Manager
• Local Data Protection
• Multi-VLAN Tagging
SC4020 storage systems support these optional licenses:
• Replay Manager
• Data Progression
• Enterprise Manager Chargeback
• Fast Track
• Live Volume
• Remote Instant Replay (Replication)
• SED FIPS Secure Data
• Virtual Ports
CT-SC040 The CT-SC040 storage systems support these optional licenses:
• Synchronous Live Volume
• Live Migrate (version 6.7.30 and later)
• SED FIPS Secure Data
• iSCSI Multi‐VLAN Tagging
Storage Center 6.7 Scalability
The following scalability guidelines apply to Storage Center 6.7.
Storage System Scalability Guidelines
The following scalability guidelines apply to SC9000, SC8000, SC4020, and CT-SC040 storage systems running Storage Center 6.7.
NOTE
: Raw storage space is expressed in decimal units (for example, 1TB = 10
12
bytes). Addressable storage space is expressed
in base 2 units (for example, 1TB = 2
40
bytes). Therefore, a 1TB drive measured in decimal units is equal to 0.909TB base 2 units.
Storage Center 6.7 Release Notes 3
Storage System Supported Maximum
SC9000 (Dual-Controller) with 128GB of memory
per controller
• 3.1PB raw and 2.0PB addressable storage space using the standard 2MB page
size
• 750TB raw and 500TB addressable storage space using a 512KB page size
SC8000 (Dual-Controller) with 64GB of memory
per controller
• 3.1PB raw and 2.0PB addressable storage space using the standard 2MB page
size
• 750TB raw and 500TB addressable storage space using a 512KB page size
SC8000 (Dual-Controller) with 16GB of memory
per controller
• 750TB raw and 500TB addressable storage space using the standard 2MB page
size
• 400TB raw and 300TB addressable storage space using a 512KB page size
SC4020 with 16GB of memory per controller
• 1054TB raw and 700TB addressable storage space using the standard 2MB page
size
• 500TB raw and 400TB addressable storage space using a 512KB page size
CT-SC040 (Dual-Controller) with 12GB of memory
per controller
• 750TB raw and 500TB addressable storage space using the standard 2MB page
size
• 400TB raw and 300TB addressable storage space using a 512KB page size
CT-SC040 (Dual-Controller) with 6GB of memory
per controller
• 400TB raw and 300TB addressable storage space using the standard 2MB page
size
• 400TB raw and 300TB addressable storage space using a 512KB page size
Storage Center Scalability Guidelines
The following scalability guidelines are the maximum recommended design guidelines for SC9000, SC8000, SC4020, and CT-SC040
controllers running Storage Center 6.7.
Storage Center
Object Supported Maximum
Disk Folder
• 10 disk folders
Server
• 500 servers (Total number of servers includes physical servers, virtual servers, and server
clusters.)
• 500 server folders
• 1000 server HBA initiator ports (Total number of HBA initiator ports includes all physical and virtual
ports that are visible to the SAN.)
Volume
• 500TB maximum volume size (or the maximum addressable storage space, whichever is less)
• 2000 volumes
• 500 volume folders
Live Volume
• 100 Live Volumes
Thin Import
• 10 volumes (maximum simultaneous imports)
Data Instant Replay
• 16,000 Replays (4000 Replays for an SC4020)
• 1000 Replay proles
• 100 Replay history proles
4 Storage Center 6.7 Release Notes
Storage Center Object Supported Maximum
NOTE: Data Instant
Replay (Snapshots) is a
licensed feature.
• 40 volumes per consistency group
Replication
• 500 source replications (SC4020: 250 replications)
• 2000 target replications (SC4020: 1000 replications for FC and 230 replications for iSCSI)
System Manager Requirements
System Manager is a Java applet that requires the use of a Java plug-in to run. The following table provides the minimum software
requirements for running System Manager.
Component Requirements
Web browser
• Windows Internet Explorer versions 7, 8, 9, and 11
• Windows Internet Explorer Desktop version 10 (Internet Explorer Modern version 10 is not
supported)
• Mozilla Firefox on Microsoft Windows
NOTE: Other web browsers might work, but are not ocially
supported.
Java Java version 7 and 8. When using Java, open the Java Control Panel and make sure that the Enable
Java content in the browser option is selected.
Enterprise Manager Compatibility
Storage Center 6.7 is compatible with Enterprise Manager 2015 R2 or later.
New in This Release
Storage Center 6.7 supports new Dell EMC hardware and introduces software features.
SC9000 Storage Controller
Storage Center 6.7 introduces support for the SC9000 storage controller.
Storage Center 6.7 Release Notes
5
SC8000 Storage Controller
The SC8000 storage controller now supports the 4GB write cache card, support for Solid State Drives (SSDs) and Self-Encrypting Drives
(SEDs), and Data Compression for all-ash arrays.
SC4020 Storage System
The SC4020 storage system now supports a maximum of 192 drives, 16Gb Fibre Channel IO cards, solid state drives (SSDs) and self-
encrypting drives (SEDs), and Data Compression for all-ash arrays.
SC400 and SC420 Expansion Enclosures
Storage Center 6.7 introduces support for SC400 and SC420 expansion enclosures.
Data Progression Improvements
Storage Center includes changes to Data Progression that reduce the impact on Storage Center performance.
Data Progression runs daily at specied time and continues until all tasks are completed. If all the tasks are not completed, those tasks are
completed in the next Data Progression cycle.
NOTE
: Data Progression still follows the schedule set on the Storage Center.
Live Volume Automatic Failover
Storage Center version 6.7.3 introduces support for automatic failover and recovery for Live Volumes.
NOTE
: Dell recommends that both Storage Centers are running the same version of Storage Center.
NOTE: Live Volume with automatic failover is only supported with ESX 5.5 and 6.0. Also, this feature does not support using raw
device mappings with ESX.
Import Volumes From PS Series Storage Arrays
Enterprise Manager version 2015 R2 and Storage Center version 6.7 support importing volumes from EqualLogic PS Series storage arrays.
You can import volumes using the oine or online method.
• Oine import migrates a volume from the source to the destination. The volume must then be mapped to the server after the import.
• Online import creates a destination volume, maps it to the server, then migrates the data to the destination volume.
NOTE
: Online import supports only stand alone Windows Server 2008 R2 or later operating systems.
6 Storage Center 6.7 Release Notes
Custom Proles for Flash Optimized Storage
Storage Center now supports Custom Proles for Flash Optimized storage.
User Interface Updates
Storage Center 6.7 provides the following user interface enhancements to improve usability.
• Thin Import and External Device features are now managed using Storage Manager
• New volume Preallocate Storage conguration wizard
• Controller node indicator light added for SC8000 and SC9000 controllers
• Asset Tag conguration added for SC8000 and SC9000 controllers
• Additional dialog boxes and instructional messages that provide error recovery for anticipated issues
Storage Center Fixed Issues
The following section summarizes the issues xed in Storage Center 6.7.
Fixed Issues in Version 6.7.50
The following table summarizes the issues xed in Storage Center 6.7.50.
Issue
Description
SCOS-41405 An SSD with an endurance life that extends beyond February 2106 displays a premature end of
endurance life.
SCOS-40558 A storage system with SupportAssist enabled that is unable to successfully complete the sending of
SupportAssist information might be unable to manage new drives or manually remove drives safely.
SCOS-40406 Drives in the archived disk folder might count against the total number of managed drives in the
storage system.
SCOS-40304 After updating a storage system to Storage Center 6.7, the controllers might reset while processing the
Link Conguration initialization step.
SCOS-40232 Clickjacking vulnerability found on web server ports in Storage Center.
SCOS-36910 On storage systems that only have spinning drives and have large volumes with a large number of new
page writes, existing snapshots take a very long to expire.
SCOS-28077 Updated the OpenSSL version on the Storage Center to OpenSSL 1.0.1u to address the following
security vulnerabilities:
• CVE-2016-2177 www.cvedetails.com/cve/CVE-2016-2177/
• CVE-2016-2178 www.cvedetails.com/cve/CVE-2016-2178/
• CVE-2016-2179 www.cvedetails.com/cve/CVE-2016-2179/
• CVE-2016-2180 www.cvedetails.com/cve/CVE-2016-2180/
• CVE-2016-2181 www.cvedetails.com/cve/CVE-2016-2181/
• CVE-2016-2182 www.cvedetails.com/cve/CVE-2016-2182/
• CVE-2016-2183 www.cvedetails.com/cve/CVE-2016-2183/
• CVE-2016-6302 www.cvedetails.com/cve/CVE-2016-6302/
Storage Center 6.7 Release Notes 7
Issue Description
• CVE-2016-6303 www.cvedetails.com/cve/CVE-2016-6303/
SCOS-24991 Addressed the following security vulnerabilities related to SSL 3.0 and TLS 1.0:
• CVE-2011-3389 www.cvedetails.com/cve/CVE-2011-3389/
• CVE-2013-0169 www.cvedetails.com/cve/CVE-2013-0169/
SCOS-21883 Removing a port from a fault domain while a controller is down might result in storage system
conguration issues.
SCOS-16813 A single disk with failing I/Os might cause storage system-wide performance degradation.
SCOS-16247 A controller might reset while setting up Live Volume protection.
SCOS-12314 A controller might reset when the lock associated with a particular message type cannot be found.
Due to variable timing conditions within the platform, messages can arrive out of order.
SCOS-2658 A rare timing window in which rebalancing local ports at the same time as volume level operations
(view volume creation, mapping/unmapping to a server, etc.) leads to the rebalance not completing.
SCOS-2224 A storage system might fail to delete a replication when the QoS node is blocked and there is
outstanding I/O.
Fixed Issues in Version 6.7.40
The following table summarizes the issues xed in Storage Center 6.7.40.
Issue
Description
SCOS-24853 In a dual-controller storage system, a license le conict might cause the controllers to reboot.
SCOS-22733 A Cisco UCS blade server running ESXi might fail to boot from SAN after updating the Storage Center
software on a storage system.
SCOS-22096 If a storage system is performing Data Progression on a large amount of data and fails to expire
snapshots, a controller might reset and become stuck a in reset loop.
SCOS-21459 Controllers might reset when creating multiple Live Volumes in parallel.
SCOS-21399 A controller might reset during replication initialization.
SCOS-21331 The Storage Center email process might stop and fail to restart. This issue causes the Storage Center
alert email queue to ll up, which might cause a controller to reset.
SCOS-19766 A storage system might enter emergency mode if it is unable to create page pool devices due to CA
out of space errors.
SCOS-19269 In a two controller storage system, the active controller might reset during failover after performing a
Storage Center update on the peer controller.
SCOS-18185 A controller might reset when removing an enclosure or reinserting a previously archived or deleted
disk into the enclosure from which it was removed.
SCOS-16677 When creating a Live Volume, choosing a destination volume that is mapped to a server might cause
the Live Volume to go oine. This might cause other volumes that use Deduplication or Compression
on the destination Storage Center to go oine.
SCOS-16377 In rare instances, a storage system with Live Volumes might reset when multiple changes are made to
the Fibre Channel switch congurations within a short time period.
SCOS-16362 Fibre channel switch environment changes might generate fatal RISC pause errors on the front-end
ports.
8 Storage Center 6.7 Release Notes
Issue Description
SCOS-13232 A Fibre Channel port or controller might reset due to RISC pause errors on a QLogic 8 Gb Fibre
Channel HBA.
Fixed Issues in Version 6.7.31
The following table summarizes the issues xed in Storage Center 6.7.31.
Issue Description
SCOS-21900 Updating to Storage Center 6.7.5 might cause an increase in BadRegionsPresent health code errors for
drives.
Fixed Issues in Version 6.7.30
The following table summarizes the issues xed in Storage Center 6.7.30.
Issue Description
SCOS-20240 Data Progression might fail to move pages to tier 3 for volumes that are larger than 32 TB. If a specic
history has multiple view volumes, Data Progression might fail to move pages for volumes that are
smaller than 32 TB.
SCOS-18932 Using Ooaded Data Transfer (ODX) in Hyper-V might result in degraded MPIO paths.
SCOS-18931 A degraded extent that misses a write on an un-degraded spot may not move due to a healthcode.
SCOS-18899 A storage system might incorrectly report snapshot bad pages when the system is low on memory.
SCOS-18894 A controller might become stuck during the reboot process after rebooting the storage system to
apply Storage Center software updates.
SCOS-18540 A controller rebalance might take several minutes to complete while deactivating the history of a large
volume (several TBs) if the storage system has space management snapshots.
SCOS-18398 A storage system with compression running might experience incomplete cache ushes if the
controllers reboot several times in a row.
SCOS-18287 Chassis rmware updates might fail when updating an SC4020 storage system from Storage Center
6.6 to Storage Center 6.7.
SCOS-16637 A 10 Gb iSCSI I/O card is unable to receive data from an Oracle Linux server if the write command is
8,126,464 bytes or larger.
SCOS-15697 A dual controller reset might occur due to a data overow issue with a 10 Gb iSCSI I/O card.
SCOS-15002 A controller reset might occur because of high memory usage caused by login requests that take a
long to time process during heavy I/O.
SCOS-13353 SC8000 controllers with CHA3 cache cards might reset due to a reference to a no longer supported
Storage Center subsystem.
SCOS-10256 Creation of the rst volume on a storage system with 7K drives might result in a false PagePool 7K
Down alert condition.
Storage Center 6.7 Release Notes 9
Fixed Issues in Version 6.7.22
The following table summarizes the issues xed in Storage Center 6.7.22.
Issue Description
SCOS-20635 Renewed the Java code signing certicate for Storage Center System Manager.
SCOS-18932 Using Ooaded Data Transfer (ODX) in Hyper-V might result in degraded MPIO paths.
Fixed Issues in Version 6.7.20
The following table summarizes the issues xed in Storage Center 6.7.20.
Issue Description
SCOS-16725 Storage Center memory might not be released properly when compression is enabled.
SCOS-16611 On rare occasions during a RAID rebalance, a short timing window may occur where inaccurate
pagepool information is read from the system resulting in volumes becoming inaccessible for a brief
period.
SCOS-16234 Incorrect SSD endurance tracker alerts might appear if duplicate endurance tracker entries are
created.
SCOS-16204 Unable to manage SED drives when running Gemalto SafeNet 8.4 and later.
SCOS-16162 An SC4020 controller reset might occur because of a network broadcast loop.
SCOS-16152 A dual controller reset might occur if a single volume is mapped to more than 10 local ports per
controller.
SCOS-15322 A dual controller reset might occur following the deletion of iSCSI remote port congurations.
SCOS-15088 A single controller storage system shows servers as partially connected when servers are connected
using Fibre Channel.
SCOS-14237 A controller reset might occur while modifying or deleting an iSCSI fault domain.
SCOS-13989 Storage Center UPS monitoring does not support newer UPS network cards.
SCOS-13820 A controller reset might occur because of an issue with deduplication.
SCOS-13420 VMotioning VMs to an SC4020 might cause the datastore to go oine.
SCOS-13241 An error might occur in the Dell Storage Manager Client if the user preferences snapshot prole list is
invalid.
SCOS-13198 Deduplication and Compression might take volumes oine when responses to storage type status are
incorrect.
SCOS-12357 An CT-SC040 controller reset might occur due to an issue with the system prole size.
SCOS-10968 Volume cleanup might not complete successfully when deleting all of the volumes on a Storage Center.
SCOS-10137 Performing a RAID rebalance when attempting to remove an entire tier of disks might not complete
properly.
SCOS-7269 Setting the VLAN Priority to a value above 0 on a fault domain with a Chelsio T5 I/O card that is
performing VLAN tagging will result in iSCSI initiators that are unable to login.
SCOS-3408 A controller reset might occur because of web server processes not end correctly over time.
10 Storage Center 6.7 Release Notes
Fixed Issues in Version 6.7.11
The following table summarizes the issues xed in Storage Center 6.7.11.
Issue Description
SCOS-16367 Resolved an issue with the Secure Console command syntax.
Fixed Issues in Version 6.7.10
The following table summarizes the issues xed in Storage Center 6.7.10.
Issue Description
SCOS-13956 In rare cases, disabling compression a volume might cause the controllers to reboot.
SCOS-12607 iSCSI IO cards might report read errors for volumes that are mapped to an ESXi cluster.
SCOS-12602 Enabling SNMP on a storage system might cause the SNMP agent to stop unexpectedly and the
SNMP agent cannot be restarted.
SCOS-9033 An SC4020 storage system might incorrectly create swap alerts.
SCOS-8248 In a Windows 2012 R2 virtual machine running in ESXi 5.5 or Hyper-V on Windows Server 2012, an
iSCSI Ooaded Data Transfer (ODX) attempt is causing volume access to hang when the volumes are
on dierent storage systems.
SCOS-7943 A controller might reset if the iSCSI initiator logs out from the target, but the initiator fails to terminate
the connection.
SCOS-7936 Security enhancement regarding Apache HTTPD and OpenSSL vulnerabilities.
SCOS-7932 Adding a storage system to Enterprise Manager might fail if the storage system is licensed for SEDs,
but it does not have any SED disks.
SCOS-7856 Logging in to the Storage Center System Manager might time out when using Active Directory
credentials.
SCOS-7533 On a storage system with compression enabled, performance degradation might occur during the rst
few minutes of Data Progression because of table validation.
SCOS-3382
SCOS-2526
A controller reset might occur when Secure Console is disabled from the Storage Center System
Manager.
SCOS-2534 After updating to Storage Center 6.6.5, a controller with iSCSI IO cards might reset during a front-end
rebalance, resulting in an outage.
SCOS-2390 An iSCSI IO card might send out an Address Resolution Protocol (ARP) request for IP on another
network if it cannot nd a gateway.
SCOS-1852 In Storage Center 6.5.10 or later, snapshot messages in system logs might contain an incorrect
Position 3072 is past the expected bound error message.
SCOS-1546 The Storage Center admin user does not receive an email when a disk folder is close to being full.
Storage Center 6.7 Release Notes 11
Fixed Issues in Version 6.7.5
The following table summarizes the issues xed in Storage Center 6.7.5.
Issue Description
CQ00503318
CQ00503316
CQ00503244
CQ00501895
CQ00500072
CQ00493850
CT-SC040 controllers may not display the correct memory allocation statistics and tracking levels or
may provide inconsistent memory threshold data due to legacy memory allocation code. This issue may
trigger event alerts for events that are not system critical.
CQ00503237
CQ00502304
CQ00502267
CQ00502263
CQ00502250
After updating to Storage Center version 6.7.4, Data Progression, Data Compression, and RAID
Rebalance operations may stop working without warning.
CQ00499176 CT-SC040 controllers may issue event alerts and reset due to a system size memory allocation issue.
Fixed Issues in Version 6.7.4
The following table summarizes the issues xed in Storage Center 6.7.4.
Issue
Description
CQ00500413 Volumes utilizing the Data Compression feature may become inaccessible.
Fixed Issues in Version 6.7.3
The following table summarizes the issues xed in Storage Center 6.7.3.
Issue
Description
CQ00497501 For SC8000 and SC9000 controllers, Data Progression may experience latency due to compression
threads utilizing a single socket instead of using both available sockets.
CQ00495709 After upgrading a controller, performing a Storage Center software update may cause performance
issues due to improperly handled update le links.
CQ00495063 Phone Home may fail after updating from Storage Center versions 6.4 or 6.5 to Storage Center version
6.6 and later due to previous, pending requests that are unable to complete.
CQ00491768 A controller may reset and failover may be unsuccessful due to an iSCSI IO cache card memory leak
with iSCSI attached Oracle and Linux servers.
CQ00491256 On rare occasions, Data Progression and subsequent rebalancing may fail due to snapshot full page
memory limitations.
CQ00489465 A volume restripe operation with large amounts of compressed data may take an extended period of
time to restripe due to Data Progression errors.
CQ00484347 For SC4020 controllers, an enclosure rmware update may fail due to missing electronically stored
information (ESI) paths during installation.
CQ00465226 When performing a non-service aecting upgrade, upgrading from a CHA3 cache card to a 4GB Write
cache card may cause the upgrade to fail due to card installation errors.
12 Storage Center 6.7 Release Notes
Issue Description
CQ00395022 On rare occasions, when performing a non-service aecting upgrade, a controller may reset due to
duplicate or overlapping data writes.
Fixed Issues in Version 6.7.2
The following summarizes the issues xed in Storage Center 6.7.2.
Issue Description
CQ00489757 Web services under a sustained heavy workload may fail to restart resulting in a loss of access to the
Storage Center management interface.
CQ00486609
CQ00486531
Controllers may report increased memory usage due to improper release of sockets.
CQ00489465 A volume restripe operation with large amounts of compressed data may take an extended amount of
time to restripe due to Data Progression errors.
CQ00486388
CQ00486381
Security enhancement regarding the vulnerability CVE-2015–1283.
CQ00486008 An SC4020 controller may reset if the incorrect version license le is applied.
CQ00485927 After a Storage Center software update, the SMTP service may not function properly due to ARP
reply packet rejection.
CQ00481384 For SC9000 controllers, a controller reset may occur due to a failover error.
CQ00481074 A controller reset may occur due to a TCP connection LAST_ACK socket state error.
CQ00480792 For SC9000 controllers, an incorrect Storage Center Upgrade Required message displays during the
login and on the About page.
CQ00479421 Disks may get a BadRegionsPresent health code during a rebuild, even when they are down, due to the
multiple RIPExpired errors.
CQ00479386 Disks may get excessive health codes because RIPExpired issues codes on devices that are down.
CQ00479088 Deferred fabric events may lead to a controller reboot.
CQ00478666 On rare occasions, a controller may reset when referencing a NULL pointer on a JBOD lookup.
CQ00478624 Deleted iSCSI remote replication connections may not be removed properly.
CQ00478053 Modifying data progression congurations may cause other Storage Prole changes.
CQ00477544 A controller reboot may occur when reconguring and/or deleting iSCSI connections.
CQ00477425 A controller may reboot if an iSCSI host sends a non-512 byte aligned rst burst size when Immediate
Data is enabled.
CQ00477069 A controller may reboot during data progression due to RAID 5 reporting the incorrect pointer during a
disk failure.
CQ00476732 Disk drive status may be set to Unknown following an SC200/SC220 power event.
CQ00475596 A controller may reset during Live Volume migration and go into a read-only state due to a proxy error.
CQ00474929 An SC4020 BMC may hang when a serial cable is connected and an invalid character is used during
the login process.
CQ00474124 Software upgrades may fail due to a watchdog timer timeout.
CQ00474112 During a software upgrade, a controller may fail due to a PreUpdateCheck ClearJobs call error.
Storage Center 6.7 Release Notes 13
Issue Description
CQ00473058 A local controller may reset, when creating and deleting portable volumes from a remote Storage
Center, due to a double-queuing error if the request fails.
CQ00472032 Security vulnerability may occur because Secure Socket Layer (SSL) supports a weak cipher suite that
uses an encryption algorithm with a short key length. For information, see http://
support.microsoft.com/kb/811834.
CQ00471760 Security vulnerability can occur due to a minor NTP vulnerability in processing remote conguration
packets referenced in SA-15:07. Security: CVE-2014-9293, CVE-2014-9294, Security: CVE-2014-9295,
CVE-2014-9296, Security: FreeBSD-SA-14:31.ntp.
CQ00471380 Enabling additional debug logging on iSCSI IO cards may lead to server connectivity issues on other
controller front-end ports.
CQ00471076 The Storage Center System Manager user interface does not allow Volume Manager privileged users
to view volumes or replays on active volumes and issues an error message.
CQ00470606 On rare occasions, replacing a failed power supply in a dual-controller Storage Center causes both
controllers to reboot.
CQ00470469 In rare cases, the CPU temperature monitor may cause a controller reboot.
CQ00469934 Security vulnerabilities can occur on Apache servers due to implementing OpenSSL version 1.0.
CQ00469349 Data Progression may move active pages out of highest cost writable class.
CQ00469084 Upgrading from CT-SC040 controller to SC8000 controller may disable Phone Home and Secure Shell
(SSH).
CQ00468372
CQ00467957
A controller may fail to initialize after a software upgrade due to an SCUpdate API error.
CQ00467814 The Storage Center System Manager user interface does not provide a tier redundancy option and
cannot be modied causing all tiers to default to dual-redundancy.
CQ00466596 An unplanned controller reboot may occur if one of the controller’s system times is adjusted manually
during the controller hardware upgrade process.
CQ00465201 After a nonservice aecting software upgrade, servers may not initialize because the wait time
between upgrades on drives is too short, causing a backup of IOs and the server to abort IOs.
CQ00463318 A controller may reboot due to cache handling errors.
CQ00462385 SMTP service may become unresponsive.
CQ00461526 On rare occasions, replacing a failed power supply in a dual-controller Storage Center causes both
controllers to reset.
CQ00460367 For SC4020 controllers, iSCSI IO card drivers are hardcoded with an incorrect value.
CQ00460116 On rare occasions, the Storage Center System Manager user interface does not properly locate disks
in the system and issues a warning.
CQ00458240 A controller may reset after a failover completes due to a port reset.
CQ00458175 Data Progression may not start when a volume creation operation does not complete properly.
CQ00449838 Replays may fail and volumes may become marked as secondary because of an API collision due to a
server being deleted (or in the process of being deleted) and a UsageDesired conguration change.
CQ00449831 Asynchronous Replication may not resume after it is paused due to an incorrect variable attribute.
CQ00420799 Upgrading from CT-SC040 controller to SC8000 controller may cause a controller to fail because port
objects set for cleanup are not deleted.
CQ00415443 IO latency issues could occur when a drive medium error is detected and the system incorrectly sets
the current IO to a low recovery level.
14 Storage Center 6.7 Release Notes
Issue Description
CQ00403547 After a rebuild, drives may appear on a host controller and not appear on a peer controller until a
reboot is performed.
CQ00344642 Intermittent IO latency may be present when Microsoft System Center Operations Manager polls
Storage Center.
CQ00306149 In rare cases, a RAID device may not be degraded properly when a second write failure is reported for
the same device.
Known Issues
The following sections summarize the known issues that may aect Storage Center operations.
Known Storage Center Issues
The following table lists known issues in Storage Center 6.7.
Issue Description
SCOS-6862
CQ00496505
In rare instances, the internal boot device on an SC9000 controller may become unusable following an
unexpected power event and the controller will not boot.
Workaround: Contact technical support.
SCOS-6821
CQ00486195
After performing an import from a PS Series storage array, Storage Center continues to attempt to log
in to the target volume. These attempts cause multiple failure logs.
Workaround: Delete the remote connection to the Storage Center. Then, congure another remote
connection to the Storage Center.
SCOS-6432
CQ00490390
The status of a secondary Live Volume remains down after bringing the primary Storage Center back
online.
Workaround: The primary and secondary Storage Centers must be running the same version of
Storage Center software.
CQ00470693 Bridgehead Software Integrated Serverless Backup (ISB), Integrated Disaster Recovery (IDR), and
Healthcare Data Management (HDM) Solution for MEDITECH Scanning & Archiving (SCA) software
products have a compatibility issue with Storage Center versions 6.6 and 6.7. Currently, Storage Center
versions 6.6 and 6.7 will not work properly with these Bridgehead Software products.
Workaround: Do not update to Storage Center versions 6.6 or 6.7 if the Bridgehead IDR/ISB
applications are in use. For more information, see the Copilot Services Technical Alert: Bridgehead
IDR/ISB for MEDITECH incompatibility with
Storage Center Operating System version 6.6.
SCOS-6258
CQ00467428
In rare instances, SC4020 controllers may not initialize following a reset or controller power cycle.
Workaround: The controller must be rebooted by performing a power cycle. After the controller is
power cycled, the controller boots up successfully.
CQ00449611 In rare instances on SC4020 storage systems, failure LEDs may be illuminated for some drives in the
chassis even though Storage Center reports the disks as up and healthy.
Workaround: Verify the disk status in the Enterprise Manager or System Manager client. If the status
is up and healthy, no action is required. If experiencing this issue, contact technical support. To clear
this condition, a full system power cycle is required.
CQ00407570 A host server running Windows Server 2012 R2 that is connected to a Storage Center using iSCSI may
become partially connected to the Storage Center after a virtual port failover.
Workaround: Congure the EnableNOPOut setting in the Windows Registry using the instructions in
the Storage Center Microsoft Multipath I/O Best Practices guide on the Dell Tech Center website.
Storage Center 6.7 Release Notes 15
Issue Description
SCOS-5446
CQ00319498
If an iSNS server is dened incorrectly on the Storage Center or if the iSNS server is down, IO may be
slightly degraded every 30 seconds.
CQ00304203 High trac on a 1Gb PCIe iSCSI IO card may cause connectivity issues.
Known Vendor Issues
The following table lists vendor issues found with Storage Center 6.7
Issue Description
CQ00489134 Storage Center servers running RedHat version 7.1 may experience resets.
Workaround: Use the latest recommended version of RedHat. See the Dell Storage Compatibility
Matrix.
CQ00481040 Emulex OCx1410x iSCSI adapters do not function correctly with Storage Center 6.7.
Workaround: Do not use Emulex OCx1410x adapters until they are listed in the Dell Storage
Compatibility Matrix.
CQ00358236 ESXi 5.x hosts with QxE82xx iSCSI adapters using QLA4xxx driver version 634.5.18 (ESXi 5.1) or
6.34.55.20 (ESXi 5.5) might fail to log in to the Storage Center after a controller reset or failover.
Workaround: Use the latest recommended driver version for the QLogic adapters. See the Dell
Storage Compatibility Matrix.
CQ00303375
CQ00293338
A Storage Center that is in virtual port mode and connected to a server running AIX version 6.1 or 7.1
may intermittently reset iSCSI HBAs and cause the iSCSI volumes to time out.
Workaround: Do not congure Storage Center virtual port mode if AIX iSCSI hosts will be connected.
CQ00266544 If a protected site is running Storage Center 6.x and the recovery site is running Storage Center 5.5 or
earlier, ESX hosts at the recovery site fail to mount VMFS5 datastores and log the error:
Host does not support ATS or ATS initialization has failed in the
local vmkernel.log file.
Workaround: Update the storage system running Storage Center 5.x to Storage Center 5.6 or 6.x.
CQ00317099
CQ00260949
Oracle Solaris 10 and 11 server iSCSI connections fail during controller failover in Virtual Port mode.
Workaround: Use Legacy Mode with Oracle 10 and 11 servers.
CQ00252780 On a storage system with iSCSI front-end ports, if a controller or port is in a failover process when a
Windows boot from SAN is requested, the boot might fail.
Workaround: Subsequent boot from SAN requests succeed when the controller or port is up.
Storage Center Update Information
The following information must be considered before updating to Storage Center 6.7.
NOTE
: When performing an update of both the Storage Center and Enterprise Manager software, update Enterprise Manager
before updating Storage Center.
NOTE: When using Dell storage Software Suite for AIX, make sure you update to version 2.3.0 or version 3.0.1 before updating to
Storage Center 6.7.
16 Storage Center 6.7 Release Notes
Updating Software on Storage Center Controllers
Storage Center 6.7 supports controller models SC9000, SC8000, SC4020, and CT-SC040.
To update Storage Center:
• The Storage Center must be running Storage Center 6.4.5 or later to perform a Phone Home/SupportAssist update to Storage Center
6.7. This update may require network rewall changes to maintain the transition between Phone Home (Storage Center 6.5 and earlier)
and SupportAssist (Storage Center 6.6 and later). See the Storage Center Pre-Deployment Tech Note for more information.
• When updating from Storage Center 6.0 or earlier to Storage Center 6.7, plan for a longer maintenance window and contact technical
support
if you need assistance. See the Storage Center Software Update Guide for more information.
Contacting Dell
Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services
might not be available in your area.
To contact Dell for sales, technical support, or customer service issues, go to Dell.com/support.
• For customized support, type your system service tag on the support page and click Submit.
• For general support, browse the product list on the support page and select your product.
Copyright
© 2015 – 2018 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other
trademarks may be trademarks of their respective owners.
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The Dell Compellent Series 40 storage array offers exceptional performance and scalability for your demanding business applications. With its advanced features like auto-tiering, thin provisioning, and snapshots, you can optimize storage utilization, reduce costs, and improve data protection. The Series 40 also provides flexible connectivity options, including Fibre Channel and iSCSI, making it easy to integrate into your existing infrastructure.
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