HP AA988A - Modular Smart Array Storage Controller SCSI, Руководство пользователя

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Chapter 4 Configuring a System for the First Time 49
To create both virtual disks:
1. Select Manage > Virtual Disk Config > Create A Vdisk.
2. Select Manual Virtual Disk Creation.
3. Type a name for the virtual disk.
The name is case-sensitive and can include 17 characters. Allowed characters
include letters, numbers, hyphens, underscores, and spaces.
4. Select RAID 5 – Parity RAID, Parity Distributed.
5. Click Create New Virtual Disk.
6. Select five drives of the same size and type (all SAS or all SATA).
7. For the dedicated spare drive option, select Yes and click Continue.
You can add a maximum of four available drives to a redundant virtual disk (RAID
1, 3, 5, 6, 10, and 50) for use as spares. If a drive in the virtual disk fails, one of
these
vdisk spares is automatically used to reconstruct the virtual disk. A spare drive
must have sufficient capacity to replace the smallest drive in the virtual disk. Vdisk
spares are also called
dedicated spares .
The controller automatically uses the vdisk spare for reconstruction of the critical
virtual disk to which it belongs. The virtual disk remains in Critical status until the
parity or mirror data is completely written to the spare, at which time the virtual
disk returns to Fault Tolerant status. For RAID 50 virtual disks, if more than one
sub-vdisk becomes critical, reconstruction and use of vdisk spares occur in the order
sub-vdisks are numbered.
Although using a vdisk spare is the most secure way to provide spares for your
virtual disks, it is also expensive to keep a spare assigned to each virtual disk. An
alternative method is to enable dynamic spares or to assign one or more unused
drives as global spares.
8. Select a drive to be the spare and click Continue.
9. For the number of volumes, select 1.
Notice that by default the volume will not be presented to (accessible by) hosts.
10. Click Create Virtual Disk.
A page is displayed that shows the progress of initializing the virtual disk.
11. Click the link to create another virtual disk.
12. Repeat Step 2 to Step 10 to create a second virtual disk with a different name.