HP Integrity NonStop H-Series - Manual (Page 270)

DSM/SCM User’s Guide — 529846-014
15 - 1
15
Backing Out a Revision
If problems arise with the current revision of software on a target system, you can
submit a DSM/SCM request to return to the previous revision applied to that logical
target. DSM/SCM makes the current revision inaccessible, reapplies the previous
revision, and displays the instructions for activating the previous revision.
The backout only restores the software to the previous revision. Depending on the
actions performed by the operator to activate that software, additional steps might be
needed to fall back to the previous revision. For additional backout procedures for
specific products, see the Gxx.xx Software Installation and Upgrade Guide or Hxx.xx
Software Installation and Upgrade Guide for the RVU.
Topics discussed in this section include:

Backing Out If DSM/SCM Is Running on page 15-2

Backing Out in Special Circumstances on page 15-6

Fallback Considerations on page 15-9
Notes. You can back out only to the previous revision of software. The software revision you
backed out is not deleted from the Configuration Revisions window. To reinstall an earlier
revision, use the Planner Interface (Planner Interface) to rebuild the revision from the revision
history, then reapply it. For the procedure for creating a new software revision from an earlier
revision, see
Section 8, Creating and Managing Software Revisions .
Figure 15-1. Backing Out a Revision
Target Pathway Env. $YPHI
TCP-T
TISERVER SM-T-001 TA-001
TDB Mgr
Target
Interface
SYSnn.ZSSLIST
$SYSTEM
Target
Database
Activity
Records
Previous
Revision
becomes
the Current
Revision
Current
Revision
becomes
the
"backed out"
Revision
VST083.vst