Datacom Systems VS-1200 Series Installation guide

Category
Tape auto loaders & libraries
Type
Installation guide

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Technical Overview
Tandberg Data™ DPS1000 Series™
Model: DPS1100 and DPS1200, Release: 1.3
DPS1000 Series is a data protection solution that enables Internet Small Computer System
Interface (iSCSI) desktop systems and backup servers to perform backup and recovery
operations. DPS1000 Series provides a shared system that can be used as a private virtual
tape library by up to 100 individual iSCSI initiators. Each initiator can have up to eight
virtual tape drives. If the DPS1100 is deployed, up to 32 virtual tape drives can be connected
to DPS1000 Series simultaneously. If the DPS1200 is deployed, up to 64 virtual tape drives
can be connected simultaneously.
DPS1000 Series enables initiators to back up data to virtual tapes, which are stored on
DPS1000 Series or on its optional external storage. With an optional physical tape library,
users can export data to physical tape.
DPS1000 Series improves backup performance and enables an automated backup strategy.
Users can back up and recover data on DPS1000 Series. Security personnel can use DPS1000
Series to store data to meet regulatory requirements.
Placing DPS1000 Series in an environment
As illustrated in the following diagram, DPS1000 Series is a standalone appliance that
receives backup and restore requests from iSCSI initiators:
After DPS1000 Series is connected to the local area network (LAN), each initiator uses
DPS1000 Series as its own unique tape library. Users can manage DPS1000 Series using its
web interface. For information about deploying DPS1000 Series, see the DPS1000 Series
Quick Setup Guide and DPS1000 Series Installation Guide.
2 | DPS1000 Series Technical Overview
DPS1100 capacity
DPS1100 has a RAID5 array with four 750GB drives, providing a total of 2.0TB (2.2TB raw)
for data storage. After the file system is initialized and assuming 2:1 compression of data, the
amount of space available for data storage on DPS1100 is 4.0TB.
DPS Expansion Module can be used for additional storage space.
DPS1200 capacity
DPS1200 has a RAID5 array with eight 750GB drives, providing a total of 4.7TB (5.2TB raw)
for data storage. After the file system is initialized and assuming 2:1 compression of data, the
amount of space available for data storage on DPS1200 is 9.4TB.
DPS Expansion Module can be used for additional storage space.
DPS Expansion Module capacity
DPS Expansion Module can be used for additional storage space. Each DPS Expansion
Module RAID5 array adds 3.7TB (4.5TB raw) of storage, and up to 10 arrays in five
enclosures can be attached to DPS1000 Series. This provides up to 37TB of external storage
space. (After the file system is initialized and assuming 2:1 compression of data, the amount
of space available on each DPS Expansion Module is 7.4TB.)
Storing data on virtual and physical tape
The process of saving data to DPS1000 Series is illustrated in the following diagram:
1. An iSCSI initiator backs up data to its virtual tape library using a backup management
application or backup utility.
DPS1000 Series uses access controls to enable multiple initiators to use DPS1000 Series
simultaneously.
2. If a virtual tape library does not exist for the initiator, DPS1000 Series creates one. This
virtual tape library emulates a Tandberg StorageLibrary T40 physical tape library.
3. DPS1000 Series compresses the backup data and saves it to virtual tapes on its internal
array. If the DPS Expansion Module external storage is available, DPS1000 Series
equally stores data on its internal and external arrays.
DPS1000 Series Technical Overview | 3
Initiators use their backup management application or backup utility to retrieve data stored
on DPS1000 Series.
In addition to backing up data through DPS1000 Series, users can export data to physical
tape using a physical tape device. This is useful for disaster recovery or to free space on the
DPS1000 Series or its optional external arrays.
Authenticating with CHAP
DPS1000 Series supports connections from Microsoft Windows or Linux systems with an
iSCSI initiator. iSCSI enables these systems to issue SCSI commands over a TCP/IP
connection. SCSI is the standard protocol by which backup applications communicate with
tape libraries or standalone tape drives. To validate the identity of initiators, DPS1000 Series
supports Challenge Handshake Authentication Protocol (CHAP) with Message-Digest
algorithm 5 (MD5).
When an initiator contacts DPS1000 Series, the systems first negotiate whether
authentication is required. If it is, DPS1000 Series sends a “challenge” to the initiator, which
requests the CHAP name and secret from the initiator. The initiator then sends DPS1000
Series its CHAP name and secret. DPS1000 Series maintains a set of credentials (CHAP
name and secret) for each of its initiators. After authenticating, the initiator can issue the
necessary SCSI commands to back up or restore data.
Understanding user roles
Users are given roles that define the tasks they can perform in the DPS1000 Series web
interface, allowing for clear separation of duty. The following roles are available in DPS1000
Series:
Appliance Administrator
Enables users such as system and network administrators to install, configure, and
administer DPS1000 Series
Storage Administrator
Enables users such as security personnel to manage initiators, virtual tape libraries
and their tapes, physical tapes, certificates, and users
DPS1000 Series users have access only to areas in the web interface that are associated with
their user role. If a user does not have access to information in a particular portion of the web
interface, that portion is unavailable. For example, users with the Appliance Administrator
role cannot see the options for creating user accounts. For a complete list of tasks and the
roles associated with them, see the “User Accounts” topic in Help, which is available from the
web interface.
Viewing reports and logs
DPS1000 Series reports enable users to view information about DPS1000 Series and its
status. The following reports and logs are available in the web interface:
Home page
Contains general information about DPS1000 Series, its memory and CPU usage, and
its appliance, authentication, and port settings
4 | DPS1000 Series Technical Overview
Security log
Contains information about security-related activity, such as when a user logs in or a
certificate is created
Dashboard
Contains information about the percentage of disk use by initiator and the amount of
free virtual tape space
Exports report
Contains information about exported data, including the name of the virtual tape and
physical tape on which the data was saved
System report
Contains information about the appliance and its configuration
Traces log
Contains detailed troubleshooting information
Event log
Contains information used to troubleshoot system issues, such as when an initiator
connects or disconnects or when DPS1000 Series is started or restarted
Application log
Contains information used to troubleshoot issues with the web interface, such as
when specific pages are accessed or when there are interface errors
Accessing the web interface
The web interface enables users to configure and manage DPS1000 Series.
To access the web interface
1. Launch a web browser.
2. Enter http://appliance_IP_address, where appliance_IP_address is the IP address of
the DPS1000 Series appliance.
The browser may display a warning page and certificate errors if the certificate used to
establish a secure communication channel between the browser and DPS1000 Series web
application server is self-signed. If the browser displays a certificate warning, accept the
certificate or add an exception (depending on your browser) and continue to the web
interface.
For information about working in the web interface, refer to the online help.
Related Documentation
In addition to this Technical Overview, the following documentation is provided:
DPS1000 Series Quick Setup Guide, which is delivered in the DPS1000 Series box. This
guide provides instructions for setting up DPS1000 Series and configuring DPS1000
Series on the network.
DPS1000 Series Installation Guide, which provides the deployment team with
information about planning for deployment and initial configuration. In addition, it
contains troubleshooting information.
DPS1000 Series help set, which provides detailed instructions for using the web interface.
DPS1000 Series Technical Overview | 5
DPS1000 Series Release Notes, which provides information about system support, known
issues, and other information about the current release.
DPS Expansion Module Installation and Administration Guide, which provides
information about installing and configuring the DPS Expansion Module external
storage.
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Datacom Systems VS-1200 Series Installation guide

Category
Tape auto loaders & libraries
Type
Installation guide
This manual is also suitable for

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