HP 127695-B21 Smart Array Controller Technology: Drive Array Expansion and Ext
HP 127695-B21 - Smart Array 431 RAID Controller Manual
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- HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 1
hp industry standard servers october 2002 technology brief Smart Array Controller Technology: Drive Array Expansion and Extension table of contents abstract 2 introduction 2 array configuration utility 2 capacity expansion 3 logical drive creation 4 volume extension 5 volume - HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 2
to http://www.compaq.com/products/servers/proliantstorage/software- management/acu_matrix.html 3 Customers should check the user documentation to verify that their specific array controller supports their chosen OS. 2 - HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 3
Smart Array Controller Technology: Drive Array Expansion and Extension capacity expansion Capacity expansion is the process of adding physical drives to an array that has already been configured. The logical drives (or volumes) that exist in the array before the expansion takes place are unchanged - HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 4
Smart Array Controller Technology: Drive Array Expansion and Extension logical drive creation Once the drive capacity has been expanded, the added capacity can be used to create a new logical drive (figure 2) or to extend the size of an existing logical drive (as described in the section titled - HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 5
drive. Unlike capacity expansion, the OS must be aware of changes to the logical drive size. The following operating systems support online volume extension: • Microsoft Windows 2000, NT 4.0 • Novell NetWare 4.2, 5.x • SCO UnixWare 7.1.x Offline volume extension is possible for some operating - HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 6
-party software utility such as PowerQuest's Partition Magic. Windows 2000 supports basic and dynamic disks, with dynamic disks being the default partition so, the administrator should download and apply the Microsoft Service Pack 3. This ensures proper compatibility between Microsoft dynamic disks - HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 7
increased likelihood of logical drive failure with more hard drives. For more information about RAID levels, refer to the Smart Array Controller User Guide, or the document titled Assessing RAID ADG vs. RAID 5 vs. RAID 1+0. Both are available from the smart array controller webpage.5 5 The Smart - HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 8
2 shows the range of stripe sizes available per RAID level. If an administrator changes the RAID level, and this new RAID level does not support the existing stripe size, the ACU or ACU-XE changes the stripe size automatically. table 2. Stripe sizes available per RAID level Fault Tolerance Level - HP 127695-B21 | Smart Array Controller Technology: Drive Array Expansion and Ext - Page 9
Smart Array Controller Technology: Drive Array Expansion and Extension feedback glossary Please direct comments regarding this communication to the ISS Technology Communications Group at this Internet address: [email protected] Microsoft, Windows, Win32, Win32s, Win64, Windows NT, and Visual C++ are
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Smart Array Controller Technology: Drive Array Expansion
and Extension
table of contents
october 2002
hp industry
standard servers
technology brief
abstract
2
introduction
2
array configuration utility
2
capacity expansion
3
logical drive creation
4
volume extension
5
volume extension in Windows
6
RAID migration
7
stripe size migration
8
conclusion
8
feedback
9
glossary
9