IBM Version 8.30 Computer Hardware User Manual


 
hot-pluggable
Pertaining to a system in which components can be added while the system is
running.
hot-spare drive
A physical drive that is defined for automatic use when a similar drive fails.
hot-swap rebuild
An operation that is started by the ServeRAID controller when it detects that a
physical drive that is part of an array and in the defunct state has been removed
and replaced on a SCSI cable or backplane.
hot-swappable
Pertaining to a component that can be removed and/or replaced while the system
is running.
I
Impacted
A RAID level-6, level-5, level-5EE, level-50, or level-60 logical drive moves to the
Impacted state if a drive fails during initialization or the initialization process is
stopped before it completes. This may occur during auto-synchronization or data
scrubbing (with background synchronization). In an Impacted drive, the
striping/synchronization process has not completed and you need to
resynchronize.
Note: A RAID level-1, level-1E, or level-10 logical drive moves to the Impacted
state during its initial build. When the build is complete, it returns to the
okay state.
integrated RAID controller
An integrated SCSI controller with RAID capabilities, such as the LSI 1020 and LSI
1030. Integrated RAID controllers are standard features on some IBM xSeries
servers. They can be used to create a RAID level-1 logical drive from two physical
drives. You can configure one additional physical drive as a hot spare drive.
initialize logical drive
To prepare a logical drive for use by erasing the first 1024 sectors on a drive. For
the ServeRAID-7t and ServeRAID SAS controllers (8i/8k/8k-l), initialization clears
the entire drive. Initialization prevents access to any data previously stored on the
drive.
initiator identifiers
The SCSI initiator IDs assigned to a cluster or failover pair.
IPSSEND command-line program
An advanced command-line program that can be used to manage your ServeRAID
controllers. It can be used to configure your controller, isolate and debug problems,
recover from errors, and to copy controller configurations from one server to
another.
Appendix B. Glossary 265