Silicon Graphics InfiniteStorage 6120, Руководство пользователя

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Configuration Management
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3.2.2 Storage Pool and Virtual Disk Management
The InfiniteStorage 6120 creates centrally-managed and vendor-independent storage pooling. It
enables different types of storage to be aggregated into a single logical storage resource from which
virtual volumes (virtual disks) can be served up to multi-vendor host computers. The networked
storage pools will provide the framework to manage the growth in storage demand from web-based
applications, database growth, network data-intensive applications, and disaster tolerance
capabilities.
The storage array may consist of up to 24 storage pools. The storage pools can be used individually
or split into multiple virtual disks. A virtual disk can be as small as part of a storage pool or uses all
of the capacity of a single storage pool. Virtual disks allocate space in 8 GiB increments. For
example, 16 GiB of storage space will be allocated when creating a virtual disk of 10 GiB. Up to 64
virtual disks are supported in total.
NOTE : In this document, the terms "GB" and "GiB" are used interchangeably, and
denote 1,073,741 bytes (2
30
bytes).
You can add and remove storage pools without affecting system operations. Use the
SHOW POOL *
command to display the current list of storage pools
(Figure 60)
.
3.2.2.1 Changing the Disk’s Status
SET PHYSICAL_DISK <disk-id> FAILED
instructs the system to fail the specified disk. When
a non-spare disk is specified and it is failing, the disk will not cause a multi-channel failure. The disk
is marked as failed. An attempt is made to replace it with a spare disk. When a spare disk is specified,
it is released, but marked as unhealthy and unavailable.
CLEAR PHYSICAL_DISK <disk-id> FAILED
changes the specified disk’s failure state to
FALSE
.
After clearing a disk, use the
ASSIGN PHYSICAL_DISK <disk-id> TO_POOL <pool-id>
SET_SPARE
command to add the disk back to the storage pool where the disk failed. This command
will also initiate a rebuild if a spare has not already been assigned to the storage pool.
3.2.2.2 Creating a Storage Pool
To create a storage pool, enter command:
CREATE POOL RAID_LEVEL=<RAID level> CHUNK_SIZE=<chunk size>
{ASSIGN_POLICY=[SAS|SATA] NUMBER=<number of disks> or PHYSICAL_DISK=<list
of disks>}
where:
• RAID level = raid5 or raid6
• chunk size = 64 kb, 128 kb, or 256 kb
• number of disks = 5 or 9 drives for RAID 5, 6 or 10 drives for RAID 6
• list of disks = index name of disks
RAID$ show pool *
OID: 0x19b40000 Index: 0x0000 Name: 19b40000
OID: 0x19b60001 Index: 0x0001 Name: 19b60001
Figure 60. Storage Pool List Example Screen