21
After selecting Configure Host Drives, ICPCON displays a list of already existing Host
Drives. With a new system this list will show no entries. In this example there is already one
Host Drive available. It’s name is ”RAID 5“ and it is an RAID 5 Array Drive (with approx.
17GB capacity). The status is “ready”. I.e., this Host drive is fully available and redundant.
The following states for RAID Host Drives are possible:
"Idle" State
This state is characterized by the fact that the redundant information of the disk array has
never been entirely created. The disk array is in this state after its first configuration and
until you quit ICPCON. If an error should occur while the array is in the
build
state, the array
returns to the
idle
state (exception: if during
build
mode the dedicated drive of RAID 4 fails,
the mode changes to
fail
).
"Build" State
After the disk array has been configured for the first time, it assumes the
build
state as soon
as you quit ICPCON. While the array is in the
build
state, redundancy information is calcu-
lated and stored to the hard disks of the array.
"Ready" State
The disk array is fully operational when in the
ready
state. All redundant information is pre-
sent, that is, a hard disk 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 informa-
tion is still present, thus allowing the remaining hard disks to continue working. This state
should be eliminated as soon as possible by replacing the defective hard disk. If a so-called
Hot Fix drive has previously been assigned to a disk array with ICPCON, 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 tempo-
rary and will be eliminated by the controller itself.
