HP ProLiant Storage Server SAN Connection and Management

Expand Storage in a SAN environment
Expansion is the process of adding physical disks 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, because only the
amount of free space in the array changes. The expansion process is entirely independent of the operating
system.
Note: See your storage array hardware user documentation for further details about expanding storage on
the array.
Expand storage for MSA storage arrays
The Array Configuration Utility enables online capacity expansion of the array and logical drive for
specific MSA storage arrays, such as the MSA1000 and MSA1500.
Expand array
Expanding an existing LUN is accomplished using the storage array configuration software applicable to
the storage array in use. In the case of the Smart Array controller, this is accomplished using the Array
Configuration Utility. LUN expansion may occur in disk arrays where space is available. If insufficient
space is available, additional physical disks may be added to the array dynamically.
IMPORTANT: An array expansion, logical drive extension takes about 15 minutes per gigabyte, or
considerably longer if the controller does not have a battery-backed cache. While this process is occurring,
no other expansion or extension can occur simultaneously on the same controller.
Figure 1 Expanding a LUN (Smart Array only)
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