Storage Pool And Virtual Disk Management; Changing The Disk's Status; Creating A Storage Pool - Silicon Graphics InfiniteStorage 6120 User Manual

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
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. Storage Pool List Example Screen
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
0 0 7 - 5 5 3 3 - 0 0 1
30
bytes).
RAID$ show pool *
OID: 0x19b40000 Index: 0x0000 Name: 19b40000
OID: 0x19b60001 Index: 0x0001 Name: 19b60001
Configuration Management
.
(Figure 60)
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