Software Installation and User’s Guide
185
ICP RAID Navigator
11.5.21
The Different States of an Array Drive
Some of these states may have the addition of
/patch
(for example, build/patch, ready/
patch). This indicates that the original array drive. For example, the parity information
was recalculated or the array drive has been patched from the error state into the fail state.
This may become helpful in a situation where two logical drives of an array drive fail at
the same time, but only one of the two logical drives is really defective and the other was
blocked out since it was connected with the same I/O channel as the defective one. The
array drive's state is error and normally all data would be lost. The ICP RAID firmware
includes some functions that allow the patch of this array drive from the error state into
the fail sate. Before the actual patch, the defective drive has to be physically removed
from the array drive. Such a patch procedure should only be used after a consultation with
a trained support person (a printout of the Save Information file, is extremely helpful).
11.5.21.1
The Ready State
The array drive is fully operational when in the ready state. All redundant information is
present, that is, a hard disk can fail without impairing the functionality of the array drive.
This is the normal state of an array drive. The ready/expand state indicates that the RAID
level and/or capacity are currently migrated/expanded.
Figure 11-146. The Ready State
11.5.21.2
The Idle State
This state is characterized by the fact that the redundant information of the array drive has
never been entirely created. The array drive is in this state after its first configuration.
Should an error 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 a RAID 4 array drive fails, the state
changes to
fail
.
Figure 11-147. The Idle State
11.5.21.3
The Build / Rebuild State
After the array drive has been configured for the first time, and the build process has
begun the array drive assumes the build state. While the array drive is in the build state,
redundancy information is calculated and stored to the components of the array drive.
Summary of Contents for 2074700-R - ICP Vortex GDT8514RZ RAID Controller
Page 1: ...Preliminary ICP RAID Software Software Installation and User s Guide Version 1 2 7 June 2003 ...
Page 23: ...Software Installation and User s Guide 23 Introduction ...
Page 68: ...68 Software Installation and User s Guide Installing Linux ...
Page 92: ...92 Software Installation and User s Guide Installing Berkeley UNIX FreeBSD ...
Page 214: ...214 Software Installation and User s Guide Fibre Channel Features ...