Intel SRCU32 - RAID Controller, Руководство пользователя

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94 Intel RAID Controller SRCU32 User’s Guide
Ready State:
The disk array is fully operational when in the ready state. All redundant information is present, for
example, a hard drive can fail without impairing the functionality of the disk array. This is the
normal state of a disk array. The state ready/expand indicates that the RAID level and/or capacity
are currently migrated/expanded.
Fail State:
The disk array changes to the fail state whenever a logical drive fails. Redundancy information is
still present, thus allowing the remaining hard drives to continue working. This state should be
eliminated as soon as possible by replacing the defective hard drive. If a so-called hot fix (hot
spare) drive has previously been assigned to a disk array with StorCon, the controller will
automatically replace the defective drive and start the reconstruction of the data and the redundant
information. Therefore, under these circumstances the fail state is only temporary and will be
eliminated by the controller itself.
Rebuild State:
The disk array will assume the rebuild state after the automatic activation of a hot fix drive or after
a manual replacement carried out with StorCon. The data and the redundant information are
reconstructed and stored to the new drive.
Expand State:
If the capacity or RAID level of an existing disk array is changed, the disk array changes its state
into expand. As soon as the expansion or migration is completed, the state changes back to ready.
Error State:
Should a second hard drive fail while the disk array is in the fail or rebuild state, it is not possible to
continue the working session without restrictions. The disk array is still available for I/Os, but data
loss and error messages on the host level are possible.
Configure New Host Drive
After selecting Configure New Host Drive, the Intel RAID Controller SRCU32 scans all channels
for free hard drives (for example, hard drives which are not yet part of a host drive) and displays
these units in a list (see Figure 27). Use the arrow up and down keys to move the selection bar
from one hard drive to another and the space bar to select/deselect hard drives. Marked hard drives
show an “*” in the first column.
In the Choose Type window in Figure 27 all host drive types are displayed (the possible types
depend on the number of selected hard drives and the firmware level of the Intel RAID Controller
SRCU32). Finish the selection by pressing <Enter>.