ICP GDT RS Series, User Manual

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Obviously, no other hard disk may fail until all data has entirely been reconstructed on the
Hot Fix drive, because up to that moment, the system is operating without redundancy.
Notes: In some literature, Hot Fix drives are also called Hot-Spare drives.
You can add or remove Hot Fix drives also with the ICP RAID Navigator.
J.4.6.8 Menu Advanced Setup: Configure Array Drives, Remove Hot Fix Drive
This option allows you to remove a Hot Fix Drive from an existing Array Drive. Naturally, the
Hot Fix drive must not be used up so far.
J.4.6.9 Menu Advanced Setup: Configure Array Drives, Hot Fix Pool Access
By selecting the Hot Fix Pool Access option, the access of a specific Array Drive to the Hot Fix
pool can be enabled of disabled.
J.4.6.10 Menu Advanced Setup: Configure Array Drives, Parity Verify
The redundancy information which is calculated during an array build or rebuild is stored on a
dedicated Logical Drive (RAID 4), or is distributed over all Logical Drives of the Array Drive
(RAID 5). This information is often called
parity data . The calculation is made with an exclu-
sive OR function (XOR). If a Logical Drive of an Array Drive fails, its data can be re-
calculated by means of the data present on the other Logical Drives of the Array Drive and
the parity data. The
Parity Verify function allows you to check the consistency of an Array
Drive's parity data. The verification may take quite a long time, but you can terminate it by
pressing <ESC>.
J.4.6.11 Menu Advanced Setup: Configure Array Drives, Parity Recalculate
If the parity information of a given Array Drive is defective, this function may be used to re-
calculate it anew.
J.4.6.12 Menu Advanced Setup: Configure Array Drives, Build/Rebuild Progress
Whenever an Array Drive is in the build or rebuild state, you can select this option, to get pro-
gress information and estimates for the required time.