
7.2
Post AM Recovery Cleanup
OVERVIEW
You have reached this point because the Administrative Module (AM) was booted such
that further recovery action is required. This procedure will deal with switching
module related recoveries. This procedure will also deal with outboard disks that have
experienced failures that have rendered those disks unusable (duplex disk failure).
The overall objective of this procedure is to have the AM running in the root
configuration on the system moving head disks (MHD). If the AM was booted from a
disk that was loaded from tape, the AM is running on the backup root partitions. The
backup root partitions are normally used for recovery from tape situations; therefore,
it is necessary to copy the backup root partitions to the root partitions and reboot the
AM. If the AM was booted from a disk that was a software backup disk, the system
MHDs must be restored to normal and the software backup disk returned to backup
status.
Once the office is processing calls and has stabilized, the AM and disks should be
returned to a duplex configuration. Also, the AM backout indicator on Master Control
Center (MCC) Page 110 should be returned to normal. This is accomplished by first
clearing the recent change log files and then clearing the AM recent change backout
indicator. Also, switching module ODD of the same vintage as the AM ODD must be
loaded in from tape so there is consistency between the AM and switching module
ODDs.
If no MHD2/MHD3 text tape (switching module text tape) at the same software
update level as the AM text restored from the backup media is available, install an
older switching module text tape now and obtain a tape of the same software update
level as the AM text to install later. The Backout Last Overwrite (BOLO) feature may
not be usable following an AM recovery from tape or Software Backup (SWBU) disk
and will not be usable if MHD2/MHD3 must be replaced with a new disk.
Table 7.2-1 — Recovery Actions
AM RECOVERY
FROM:
RECOVERY
ACTION SM
TEXT, PUMP
SM
SM TEXT, SM
ODD PUMP
SM
RECOVER
BASE MHD
RESTORE
ROOT &
REBOOT
Original Disk
—
—
—
Z
AM Text Tape
X
—
—
X
AM Text & ODD
Tapes
—
X
—
X
X = Actions that are required.
Z = Actions that are required if AM recovered on the backup root.
Post AM Recovery Subprocedure Overview
— Recover the Volume Table Of Contents (VTOC) of any outboard MHD that is new
or duplex failed, and initialize Automatic Message Accounting (AMA) Disk Writer.
— Recover the switching module text on the second disk pair if necessary to
maintain consistent software update levels between AM text and switching
module text.
235-200-150
January 2003
SYSTEM RECOVERY
Procedure 7.2
Issue 3.00
Page 7.2-1
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