application notes
hp OpenView
capacity management for StorageWorks NAS
servers
First Edition (February 2004)
Part Number: AA-RV1BA-TE
This document describes how to use HP OpenView Storage Area Manager version 3.1 to manage capacity on
supported HP StorageWorks NAS servers.
Additional information about Storage Area Manager is available at:
http://h18006.www1.hp.com/products/storage/softw are/sam/index.html
.
Additional information about NAS products is available at:
http://h18006 .www1.hp.com/stor age/networkattached.html
.
2 Capacity Management for StorageWorks NAS Servers Application Notes
© Copyright 2004 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for
incidental or consequential damages in connection with the furnishing, performance, or use of this material.
This document contains proprietary information, which is protected by copyright. No part of this document may be photocopied,
reproduced, or translated into another language without the prior written consent of Hewlett-Packard. The information contained in this
document is subject to change without notice.
Compaq Computer Corporation is a wholly-owned subsidiary of Hewlett-Packard Company.
Microsoft, Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S. and/or other countries.
Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information is provided
“as is” without warranty of any kind and is subject to change without notice. The warranties for Hewlett-Packard Company products are
set forth in the express limited warranty statements for such products. Nothing herein should be construed as constituting an additional
warranty.
Printed in the U.S.A.
Capacity Management for StorageWorks NAS Servers
Application Notes
First Edition February 2004
Part Number: AA-RV1BA-TE
About this document
3Capacity Management for StorageWorks NAS Servers Application Notes
About this document
This document describes how to monitor and manage capacity for a Windows-powered HP
StorageWorks Network Attached Storage (NAS) server by using it as a Windows host for HP
OpenView Storage Area Manager (SAM) v3.1. This document provides supplemental
information that is not available in either the Storage Area Manager or NAS documentation
sets. It does not describe all aspects of installation, configuration, or operation for either
product. Therefore, in addition to this document, you must have access to and familiarity with
the documentation for both products.
This section covers the following topics:
■ Document contents
■ Intended audience
■ Related documentation
Document contents
This document covers the following topics:
■ Overview, page 5
■ Installing the host agent on the NAS server, page 8
■ Discovering the NAS server as a Windows host, page 11
■ Managing capacity with Storage Builder and NAS file screening, page 16
■ Managing consumption with Storage Builder and NAS storage quotas, page 18
Intended audience
This document is intended for both implementation professionals and end users. The Storage
Area Manager solution, including management server, client, and host agent software, is
delivered by Implementation Service professionals, who initially install and configure the
entire software suite. After this initial base service, customers can choose to install additional
host agents.
Related documentation
For more information about Storage Area Manager, refer to the following:
■ HP OpenView Storage Area Manager Installation Guide
■ HP OpenView Storage Area Manager Administrator’s Guide
■ HP OpenView Storage Area Manager Release Notes
■ HP OpenView Storage Area Manager Online Help
For more information about NAS servers, refer to the following:
■ HP StorageWorks NAS b3000 v2 and e7000 v2 Administration Guide
■ HP StorageWorks NAS 4000s and 9000s Administration Guide
About this document
4 Capacity Management for StorageWorks NAS Servers Application Notes
The preceding lists contain only a portion of all the documentation available for the Storage
Area Manager and NAS products. Complete Storage Area Manager documentation is
available at the following locations:
■ HP Product Manuals Search web site at
http://ovweb.external.hp.com/lpe/doc_se rv/
■ eCare website at
http://support.openview.hp.com
Complete documentation for the supported NAS versions is available by following the links on
http://h18006.www1.hp.com/s t orage/netw orkattached.html
.
Overview
5Capacity Management for StorageWorks NAS Servers Application Notes
Overview
HP OpenView Storage Area Manager is a client/server software suite that provides centralized
storage monitoring and management. If you use Storage Area Manager to manage capacity
utilization in a storage area network (SAN), you can also manage capacity for
Windows-powered HP StorageWorks NAS servers as Windows hosts.
After installation of the Storage Area Manager host agent, the NAS server can take advantage
of Storage Node Manager and Storage Builder functionality just as any other Windows host,
including:
■ Automated discovery and topology mapping
■ Continuous health monitoring and real-time event status information
■ Storage allocation and utilization views
■ Historical trending and future extrapolations
■ Reports, graphs, and charts for capacity management and planning
■ Automated notification of capacity threshold violations
HP has successfully tested and supports Storage Area Manager v3.1 host agents on the
following NAS systems:
■ HP StorageWorks NAS b3000 v2
■ HP StorageWorks NAS e7000 v2
■ HP StorageWorks NAS 4000s
■ HP StorageWorks NAS 9000s
Note: To date, Storage Area Manager support for older HP Windows-powered NAS devices
(NAS b2000, NAS b3000 v1, and NAS e7000 v1) has been limited to discovery and health
monitoring. Storage Area Manager enables this functionality through the use of properties files. If
you want to implement capacity management as described in this document for the newer NAS
b3000 v2 or NAS e7000 v2, you must delete the properties files for these devices. As a result,
discovery and health monitoring for the earlier v1.0 versions will no longer be supported. Capacity
management is not supported for the NAS b2000, NAS b3000 v1, or NAS e7000 v1 in either the
properties files or host agent-based implementations.
See the Single Point of Connectivity Knowledge (SPOCK) web site for additional information
about supported NAS devices at
http://turbo .r o se.hp .com/spoc k
.
Overview
6 Capacity Management for StorageWorks NAS Servers Application Notes
Figure 1 shows a configuration that includes the Storage Area Manager server, client, and a
NAS device attached to storage. In this configuration, the Storage Area Manager host agent is
installed on the NAS device, which acts as a managed host.
Figure 1: Storage Area Manager and NAS host configuration
Instructions for using Storage Area Manager and NAS functionality together begin on page 8.
To learn more about Storage Area Manager and the supported NAS servers, see “About HP
OpenView Storage Area Manager” and “About the HP StorageWorks NAS family” below.
About HP OpenView Storage Area Manager
The Storage Area Manager solution includes a management server, one or more clients, and
one or more SAN hosts.
The management server software is installed on a Windows 2000 system.
The management client is a Windows 2000, Windows XP, HP-UX, Linux, or Sun Solaris host
on which the Storage Area Manager user interface is installed. You access and run Storage
Area Manager from the management clients.
Storage Area Manager also employs host agent software on each SAN host. Once installed, the
host agent enables communication between the server and the storage devices that are
connected to the host. Storage Area Manager supports HP Windows-powered NAS servers as
Windows hosts.
The Storage Area Manager software suite consists of five applications:
■ Storage Node Manager, for device management
■ Storage Builder, for capacity management
■ Storage Optimizer, for performance management
■ Storage Allocator, for storage allocation and virtualized access control
■ Storage Accountant, for storage usage metering and billing.
These applications function individually and together to enable integrated storage resource,
application capacity, and infrastructure management.
H
E
W
L
E
T
T
P
A
C
K
A
R
D
Management
Client
Management
Server
Managed Host -
NAS Device
B3000v2
E7000v2
4000s
9000s
LAN
FC / SCSI / ENET
SAN- or direct-
Attached
Storage
Win2K
Arrays,
Disks, Tape
NAS
Client application
downloaded to
remote system
via browser
Host Agent s/w
pushed to NAS
pull push
Overview
7Capacity Management for StorageWorks NAS Servers Application Notes
In particular, the Storage Builder application provides capacity monitoring, management, and
reporting features that you can enable for specified HP NAS devices by following the
instructions in “Installing the host agent on the NAS server” on page 8.
More information on Storage Area Manager is available on the SAM website at:
http://h18006.www1.hp.com/products/storage/ softwa re/sam/index .html
.
About the HP StorageWorks NAS family
Network Attached Storage (NAS) servers are specialized file-serving devices that provide
high-capacity support for heterogeneous files. A NAS solution provides network-accessible
storage to clients and servers running different operating systems.
HP offers a full range of NAS solutions that satisfy storage needs in diverse environments,
from large enterprises to small and medium businesses. All HP StorageWorks NAS solutions
provide scalability, continuous data availability, and high-performance block and file serving.
The HP StorageWorks NAS b3000 is an entry point to NAS/SAN configurations, providing
enterprise-level availability with clustered no-single-point-of-failure solutions, scalability up
to 48 TB with embedded switches, and excellent performance for heterogeneous computing
environments.
The HP StorageWorks NAS e7000 delivers performance, scalability, and availability by
providing a gateway to the enterprise SAN for file level data. The NAS e7000 connects to the
industry's broadest range of SAN arrays, fusing NAS and SAN for the enterprise.
The NAS 9000s and 4000s provide higher levels of storage management, data protection,
performance, and print services. These models are based on the Microsoft Windows Storage
Server 2003 operating system, which features quota management and file screening.
The HP StorageWorks NAS 9000s delivers NAS storage with multi-protocol file support and
storage management for the enterprise environment. It provides simple, rapidly deployable,
and flexible storage that can be managed remotely. NAS 9000s features include Volume
Shadow Copy Service for data protection and Microsoft Quota for storage usage control.
The HP StorageWorks NAS 4000s provides storage management benefits similar to the NAS
9000s, but for workgroups and regional offices.
For more information, refer to the NAS product documents at
http://h18006.www1.hp.com/s t orage/netw orkattached.html
.
The rest of this document describes how to join NAS and Storage Area Manager functionality
to manage capacity in NAS server configurations.
Installing the host agent on the NAS server
8 Capacity Management for StorageWorks NAS Servers Application Notes
Installing the host agent on the NAS server
To take advantage of combined NAS and Storage Area Manager features, you must first install
the Storage Area Manager host agent. In general, installing the host agent on the NAS server
follows the procedures documented in the HP OpenView Storage Area Manager Installation
Guide and Storage Area Manager online help.
This section discusses special considerations for the host agent installation, including:
■ Installation prerequisites, page 8
■ Installing the host agent software, page 9
■ Deleting the properties files, page 10
■ Launching the NAS server software, page 10
Installation prerequisites
Before you install the host agent, ensure that you have the following:
■ The Windows deployment depot installed on the Storage Area Manager management
server (required for remote installation of the host agent on the NAS server)
The deployment depot is part of a typical Storage Area Manager installation. Refer to the
HP OpenView Storage Area Manager Installation Guide for details.
■ Storage Area Manager v3.1 CD-ROM (required for local installation of the host agent on
the NAS server)
■ HP OpenView Storage Area Manager Installation Guide, available from
http://ovweb.exte r n a l.hp .c om/ lpe/doc_serv/
If Storage Area Manager has already discovered the NAS server and displayed it under the
NAS Devices node, complete the following steps before installing the host agent:
1. Click Tools > Configure > SNMP Discovery Range and remove the NAS IP address
from the SNMP discovery range.
2. Right-click the NAS entry under the NAS Devices node and delete it.
Note: When a NAS server is displayed under the NAS Devices node, you can access the NAS
software directly from the Storage Area Manager interface. However, after installing the host agent
and configuring a NAS server as a Windows host, you must log on separately to the NAS server to
use its software. For more information, see “Launching the NAS server software” on page 10.
Installing the host agent on the NAS server
9Capacity Management for StorageWorks NAS Servers Application Notes
Installing the host agent software
Storage Area Manager provides two methods for installing the host agent:
■ Install the host agent remotely from the management server to each SAN host
■ Install the host agent locally from the Storage Area Manager CD
The NAS servers support both installation methods.
Remote installation
To install the Windows host agent remotely from the Storage Area Manager management
server to a NAS b3000 v2 or a NAS e7000 v2, follow the instructions in the HP OpenView
Storage Area Manager Installation Guide and Storage Area Manager online help.
Before remotely installing the Windows host agent from the Storage Area Manager
management server to a NAS 4000s or a NAS 9000s, you must enable the Remote Registry
Service, which is disabled by default on these NAS servers. The Remote Registry Service must
also be enabled before updating or uninstalling the host agent remotely.
To enable the Remote Registry Service on the NAS server:
1. Open the Computer Management tool on the NAS server.
2. Click Services and Applications, and then click Services.
3. Right-click Remote Registry.
4. Click Start.
5. Close Computer Management.
Note: Ensure that the Remote Registry Service is enabled in all of your Windows group policies.
Proceed with installing the host agent software as documented in the HP OpenView Storage
Area Manager Installation Guide and Storage Area Manager online help.
To improve security and performance on the NAS server after remotely installing, updating, or
uninstalling the host agent, HP recommends that you disable the Remote Registry Service
again.
Local lnstallation
To install the host agent locally on any of the supported NAS servers, use the Storage Area
Manager v3.1 CD-ROM. Follow the instructions for installing the host agent locally on
Windows hosts as documented in the HP OpenView Storage Area Manager Installation Guide.
Installing the host agent on the NAS server
10 Capacity Management for StorageWorks NAS Servers Application Notes
Deleting the properties files
After installing the host agent on the NAS server, but before performing a discovery, HP
recommends that you delete the NAS properties files on the Storage Area Manager
management server. This precautionary measure will prevent the NAS host from appearing
under both the Hosts and NAS Devices nodes.
Caution: When you delete the properties files, you lose Storage Area Manager support of
legacy NAS devices (b2000, b3000 v1, and e7000 v1). If you want to continue using
Storage Area Manager for discovery and health monitoring of these legacy devices, you
should not delete the properties files. If you choose to retain these files, you will not be able
to configure the new NAS versions (b3000 v2, e7000 v2, 4000s and 9000s) as Storage
Area Manager hosts.
To delete the properties files:
1. On the Storage Area Manager management server, navigate to the following directory:
\sanmgr\managementserver\devices\properties
2. Delete the following properties files, which correspond to the NAS servers:
■ COMPAQ_B2000.DEF
■ COMPAQ_B3000.DEF
■ COMPAQ_E7000.DEF
Launching the NAS server software
After installing the host agent, you cannot launch the NAS server software directly from
Storage Area Manager. When you want to perform NAS administration tasks, access the Web
interface as follows:
1. Open a Web browser and enter the following in the address box:
https://your NAS machine name or IP Address:3202/
2. Log on with your NAS user name and password.
The default user name is Administrator. The default password is hpinvent. Online help is
available by clicking the Help tab on the main screen.
Discovering the NAS server as a Windows host
11Capacity Management for StorageWorks NAS Servers Application Notes
Discovering the NAS server as a Windows host
If no host agent is installed on a NAS server, Storage Area Manager discovers and enters the
server under the NAS Devices node. In this context, Storage Area Manager can only monitor
the NAS server’s health. You cannot collect complete information about NAS capacity or
perform other management functions.
In contrast, after installing the host agent on a NAS server and performing a discovery, Storage
Area Manager enters the server under the Hosts node in the Resources tree and places it on a
device topology map. Figure 2 shows the NAS server, ssd-2lq-34, as a Storage Area Manager
host. The NAS device’s storage capacity is now visible from both a host and a device
perspective, and you can use Storage Builder to manage the NAS device’s storage.
Figure 2: NAS server ssd-2lq-34 in the Resources tree and device map
Discovering the NAS server as a Windows host
12 Capacity Management for StorageWorks NAS Servers Application Notes
Supported NAS topologies
When you install the host agent on the NAS server, Storage Area Manager supports the NAS
device as a host, a storage device, and a switch (if present). Storage Area Manager can
discover, map, and manage most components of the NAS server in the following topologies:
■ NAS devices with internal storage. If Storage Area Manager discovers internal storage
devices that are not supported (for example, Smart Array controllers), they are entered as
“Unknown Devices.”
■ NAS devices with external storage, which can include combinations of HBAs, storage
devices, and interconnect devices. For more information about NAS device specifications,
refer to the following web sites:
— NAS b3000 v2:
http://h18006 .www1.hp.com/products/q ui ckspecs/11339_na/11339_na.html
— NAS e7000 v2:
http://h18006.www1.hp.com/pr oduc ts/quickspecs/11004_na/11004_na.html
— NAS 4000s:
http://h18006.www1.hp.com/pr oduc ts/quickspecs/11830_na/11830_na.html
— NAS 9000s:
http://h18006 .www1.hp.com/products/quickspecs/11831_na/11831_na.html
For more information about Storage Area Manager device support, refer to the following
web site:
http://turbo.ros e.hp.com/ spock
Although Storage Area Manager supports a large number of storage devices, there are some
devices that do not provide full identification information. If these devices are connected,
Storage Area Manager discovers and maps them as “Unknown Devices.” You can associate an
unknown storage device with a node on the topology map or rename the unknown device to
associate it with a particular NAS device. For more information, refer to the HP OpenView
Storage Area Manager Installation Guide.
Discovering the NAS server as a Windows host
13Capacity Management for StorageWorks NAS Servers Application Notes
Viewing information about the host
When you select the NAS host in the Resources tree or device map, you can view capacity
information collected by the host agent. Figure 3 shows the Capacity panel viewed from
Storage Builder. This panel displays capacity information, data collection status, and optional
reports for the NAS host.
Figure 3: Storage Builder Capacity panel for NAS host
Storage Builder’s reports track the size of certain files and directories in the storage domain.
Using file data collected from the NAS host, you can generate the following Capacity reports:
■ Largest files—The largest files on the NAS host. The list includes each file's location,
owner, size, file mode, time created, and last time opened or modified.
■ Largest directories—The directories with the largest total file size on the NAS host. Total
file size does not include files in subdirectories.
■ Stale files—Files on the NAS host that have not been opened in a specified number of
days.
■ Junk files—Files on the NAS host that can be identified by specific characters in their
names (for example, .tmp).
■ Files/directory detailed list—All files and directories on the NAS host. The report
includes each file's size, owner, file mode, time created, and last time opened or modified.
Using the Capacity reports with the NAS file screening capabilities gives administrators
exceptional control over storage resources. See “Managing capacity with Storage Builder and
NAS file screening” on page 16 for more information.
Discovering the NAS server as a Windows host
14 Capacity Management for StorageWorks NAS Servers Application Notes
Viewing information about connected devices
You can display additional information for the devices connected to the NAS host. For
example, Figure 4 shows the Capacity panel for the disks on the NAS host.
Figure 4: Disks connected to NAS host
This Capacity panel displays the disk space that is visible to the NAS host. The result is a list
of all the disks/LUNs to which the host has a physical path. This panel displays the following
information:
Storage Device—The name of the storage device that contains the listed LUN.
HBA Name—The HBA name reported by the host.
Capacity—Total usable LUN capacity, including used and unused space. The LUN size is
reported by the storage device or host.
Device File—The host's primary access path to the LUN, except for Linux hosts. Storage Area
Manager creates this value for Linux hosts.
Hardware Path—The host's logical path to the LUN. The format is OS specific. Typically, it
contains the location of the HBA and ends with the Target and LUN ID.
LUN id—The LUN name reported by the storage device. If the device does not report a name,
Storage Area Manager creates a unique LUN name. You can rename LUNs.
The physical, logical, and utilization data available on the Capacity panel gives you greater
control over your storage environment by letting you reclaim unused storage space, configure
capacity thresholds, and set up notifications.
Discovering the NAS server as a Windows host
15Capacity Management for StorageWorks NAS Servers Application Notes
You can use Storage Area Manager’s other features to gain more information from the NAS
server acting as a Windows host. The next sections of this document provide examples of some
of the key ways Storage Area Manager and the NAS host work together.
Managing capacity with Storage Builder and NAS file screening
16 Capacity Management for StorageWorks NAS Servers Application Notes
Managing capacity with Storage Builder and NAS file screening
The NAS 4000s and 9000s offer a file screening feature that lets you limit or monitor files
based on their extensions. By combining these file screening capabilities with the reporting
features of Storage Builder you can manage your storage resources more efficiently.
Note: File screening is not available on the NAS b3000 or e7000.
For example, you want to determine how much storage space is consumed by unwanted media
files, such as .mp3 files. To do this, you can use Storage Builder to generate a Junk Files report
that collects information about .mp3 files on the NAS host. You generate this report from the
Capacity panel for the NAS host (see Figure 3 on page 13).
Figure 5 shows a sample Junk Files report, which indicates that the NAS server, ssd-2lq-34,
has a small number of unwanted files in the E:/CZ/Music directory.
Figure 5: Storage Builder Junk Files report
To prevent users from storing additional .mp3 and other media files on the NAS server, use the
NAS server software to set up a file screening policy (see Figure 6). For information on
starting the NAS software, see “Launching the NAS server software” on page 10.
Figure 6: NAS File Screening page
Managing capacity with Storage Builder and NAS file screening
17Capacity Management for StorageWorks NAS Servers Application Notes
After setting the policy, if a user attempts to save an .mp3 file, the NAS server displays an error
message and blocks the operation (see Figure 7).
Note: The message displayed is a standard Windows error indicating insufficient disk space, which
might be misleading. The restriction against storing the specified files is actually the result of the NAS
server’s file blocking operation.
Figure 7: NAS server blocking .mp3 file
Refer to the NAS 4000s and 9000s Administration Guide for complete information on
configuring file screening. Refer to the Storage Area Manager Administrator’s Guide and
Storage Area Manager online help for complete information on generating Storage Builder
reports.
Managing consumption with Storage Builder and NAS storage quotas
18 Capacity Management for StorageWorks NAS Servers Application Notes
Managing consumption with Storage Builder and NAS storage quotas
You can limit and monitor storage consumption on the NAS 4000s and 9000s servers by
setting hard quotas in two ways:
■ Disk quota—Tracks and controls disk space on volumes. You can configure the volumes
to prevent certain users from using disk space and to log events when users exceed their
disk quotas or warning levels.
■ Directory quota—Lets you specify limits on disk space used by files in a folder and set
thresholds for alarms and notifications.
Note: Quota management is not available on the NAS b3000 or e7000.
For example, if you use Storage Builder to run a report on the largest directories on the NAS
server, ssd-2lq-34, you would discover that the Music directory from the example on page 16
exceeds 11 MB. You can generate this report from the Capacity panel for the NAS host (see
Figure 3 on page 13). Figure 8 shows a portion of the Largest Directories report.
Figure 8: Storage Builder Largest Directories report
If you want to set a quota on the Music directory, you would next use the NAS software
directory quota feature. For information on starting the NAS software, see “Launching the
NAS server software” on page 10.
In this way, Storage Builder’s reporting features work with the NAS quota management to give
you better control over storage space usage.
Refer to the NAS 4000s and 9000s Administration Guide for complete information on
configuring disk and directory quotas. Refer to the Storage Area Manager Administrator’s
Guide and Storage Area Manager online help for complete information on generating Storage
Builder reports.
Conclusion
19Capacity Management for StorageWorks NAS Servers Application Notes
Conclusion
HP supports installing the Storage Area Manager host agent software on your NAS server and
using the Storage Builder application to manage storage capacity.
Teaming Storage Builder’s management and monitoring features with the NAS feaures of file
screening and quota management allows you to
■ Centralize and simplify capacity management and monitoring
■ Control storage usage
■ Reclaim wasted or unused space
■ Boost capacity utilization ratios
■ Predict capacity demand and plan for storage resource and hardware purchases
If you are currently a Storage Area Manager user, you can begin taking advantage of these
benefits right away. If you would like to add Storage Area Manager to your environment,
contact your HP authorized service provider.
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