In software release 5E12, the "11" configuration is supported on both the 3B20D and 3B21D processors.
Prior to the 5E12 software release only the 600 and 322 megabyte (MB) VTOC (volume table of contents) were
allowed on the secondary disk pair (63 configuration) and could be used on the 3B20D processor.
In the 5E12 a small or medium VTOC (322 or 600 MB) is still allowed on the outboard (optional) drives. However, if
1 gigabyte (GB) hardware is available on a particular pair of drives these should be optimized and reconfigured to
have 1 GB VTOC.
The following provides disk configuration terminology clarification:
The "1" identifies the 1 GB formatted drive with the large logical layout.
The "6" identifies a 600 MB formatted drive with a medium logical layout.
The "3" identifies a 322 MB formatted VTOC (small logical layout) used on small SCSI, medium SCSI, or large
SCSI disk drives.
The "11" is a two base disk pair configured as a large SCSI and large SCSI.
The "66" is a two base disk pair configured as a medium SCSI and medium SCSI.
The disk reconfiguration tools will descend the disk chain and format all optional disk pairs to contain a VTOC that is
the largest possible for a particular disk pair. All remaining disk pairs will have small logical layouts.
CAUTION:
Do not attempt a disk reconfiguration if the office does not meet all of the conditions listed in the
Overview.
NOTE 1:
Disk reconfiguration should be started and completed in a single session. This is because the
office MHDs will be in simplex mode for most of the procedure.
NOTE 2:
The term SM, as used in this procedure, refers to all modules (LSMs, HSMs, RSMs, ORMs, TRMs, etc.).
NOTE 3:
Many commands are entered at the master control center (MCC) during this procedure. The commands
to be entered are given in the man-machine language (MML) format only.
NOTE 4:
The primary responses expected for each command are given in the procedure. Some commands will
generate additional output messages that are not specifically documented in the procedure. As long as the
primary responses are received, any additional messages can be treated as supplementary information, or
ignored.
PROCEDURE
1.
This step can be performed one or more shifts prior to the actual disk reconfiguration procedure.
Perform a full office backup (GENERIC/ECD/ODD) of the current disk configuration.
Reference:
235-105-210,
Procedure 6.23
.
CAUTION:
Do not continue until this step has been successfully completed.
2.
All recent change activity must be stopped and remain stopped during the entire disk reconfiguration
procedure. Notify everyone to get out of recent change -
this includes RMAS
.
235-105-210
October 1999
Copyright © 1999
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Summary of Contents for 5ESS-2000
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