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Notice: HSG80/HSG60 Disk Device Reuse Best Practices

SUPPORT COMMUNICATION - CUSTOMER NOTICE

Document ID: c00845227

Version: 1

Notice: HSG80/HSG60 Disk Device Reuse Best Practices
NOTICE: The information in this document, including products and software versions, is current as of the Release Date. This document is subject to change without notice.

Release Date: 2004-10-29

Last Updated: 2007-01-11


DESCRIPTION

Document Revision #
Document Revision Date
Revision Details
1
11-Jan-2007
Converted from AUI.
0
29-Oct-2004
Original document release under AUI id: CN0598W

Reuse of physical storage devices (disk drives) on Array Controllers HSG60/HSG80 based storage systems should include the deletion of storage containers that are being re-deployed and initializing the devices under the current version of ACS firmware. Reuse of these initialized devices is then accomplished by creating the desired containers, initializing them and creating the unit for access by the desired host or hosts. This initializing activity should be considered a 'Best Practices' procedure for any storage set creation where previously used disk drives are being re-utilized. Failure to initialize previously used disk devices may result in varying metadata from previous firmware versions and lead to potential issues within newly formed storage sets.

DETAILS

Presented Units on HSG60/HSG80 based storage systems are a result of a number of configurations. The individual disk drive elements are combined into a storage set from which a presented unit is assigned for host system access. The reconfiguration of a storage set requires the systematic reversal of the creation process. The steps for this reconfiguration, along with example commands, are detailed below:

  1. Delete the host accessible unit

    For example, delete D4 (where D4 is presented from storage set raid 8)

  2. Delete the storage set from which the unit was presented

    For example, delete raid8 (where raid8 is created from disk10100, disk20100, disk30100 and disk40100)

  3. Proceed to initialize the individual disk units which formerly comprised the storage set

    1. Initialize disk10100

    2. Initialize disk20100

    3. Initialize disk30100

    4. Initialize disk40100

  4. Create the desired new storage set

    For example, add stripe stripe3 disk10100 disk20100 disk30100

  5. Initialize the new storage set

    For example, Initialize stripe3

  6. Create the new host accessible unit

    For example, Add unit d5 stripe 3


Hardware Platforms Affected: EMA/ESA/MA Disk Arrays, HP HSG Array Controller
Components Affected: Not Applicable
Operating Systems Affected: Not Applicable
Software Affected: Not Applicable
Third Party Products Affected: Not Applicable
Support Communication Cross Reference ID: IA00845227
©Copyright 2007 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental,special or consequential damages including downtime cost; lost profits;damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners.

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