ICP GDT RS Series, User Manual

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J.4.6.1 Menu Advanced Setup: Configure Array Drives, Change Drive Name
This command allows you to change the name of an Array Drive. The name serves to iden-
tify an Array Drive in ICPCON or ICP RAID Navigator. This can be very helpful for configura-
tions where several Host Drives of various types are operated by a single controller.
J.4.6.2 Menu Advanced Setup: Configure Array Drives, Expand Array Drive
The Expand Array Drive option which is also available with
ICP RAID Navigator, contains three major functions:
1. Conversion of a free space on the Logical Drives into a
separate Host Drive
2. Migration of the RAID level of a given Array Drive
RAID 0 -> RAID 4 and vice versa
RAID 0 -> RAID 5 and vice versa
3. Expansion of the capacity of a given Array Drive
To initiate a migration or expansion with a RAID 4/5 Array Drive, the state must be ready .
The data on the Array Drive remain intact and are not affected by the expansion.
The additional capacity is introduced as new Host Drive. If a Logical Drive fails during the
expansion, the expansion process continues until the expansion is finished. The Array Drive
changes into the
fail state.
J.4.6.3 Menu Advanced Setup: Configure Array Drives, Add RAID 1 Component
In certain "emergency" cases this is a very powerful and helpful option. This function allows
you to add to a Logical Drive which is member of an Array Drive, another Logical Drive as a
mirror drive (RAID-1).
Example: You have configured an Array Drive with 4 Logical Drives. One Logical Drive has
failed and the Array Drive went into the fail state. Another failure would cause data loss.
Unfortunately, you find another Logical Drive, which is shortly before failing (e.g., you hear
a strange noise from it, or it's grown defect counter explodes). If you now initiate a hot plug
it is very likely that this critical Logical Drive will also fail. This would result in a disaster. To
avoid that problem, you can mirror in a first step a new good Logical Drive to the critical
one. When the copying is finished you remove the critical Logical Drive and then carry out a
hot plug procedure.
J.4.6.4 Menu Advanced Setup: Configure Array Drives, Replace Array Component
If a Logical Drive of an Array Drive without a Hot Fix drive should fail (or is very likely to fail,
soon), you should replace the defective hard disk with a new one as soon as possible be-
cause the Array Drive is without redundancy. The replacement Logical Drive has to have at
least the same capacity as the failed one. The replacement is carried out either with
ICPCON or ICP RAID Navigator. After having installed the replacement hard disk as a new
Logical Drive, you can add it to the Array Drive. After selecting the Logical Drive which
needs to be exchanged, ICPCON offers a list of existing Logical Drives which can be used as
replacement units. The Array Drive's state is changing into
rebuild and the missing data is
automatically reconstructed on the new Logical Drive.
J.4.6.5 Menu Advanced Setup: Configure Array Drives, Remove RAID 1 Component
This option corresponds with the Add RAID-1 Component option. It allows you to remove a
previously configured RAID-1 combination.