Hitachi NVM Navigator v03-07, User Manual

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3-74 Migration procedures
HVM Navigator User's Guide - Migration
Return migration
Primary usages of Migration functions of HVM Navigator comprise forward and
backward migrations between specific HVMs, thereby achieving such
advantages as minimum server downtime at scheduled maintenance and
optimum power saving through scheduled server consolidation during off-peak.
In this manual, the backward migration from the destination to the source is
called “return migration.”
Return migration is executed with the source and the destination mutually
swapped. Other operating steps are the same as those in the normal migration
process.
Exchanging or updating hardware or software
By executing Concurrent Maintenance mode, you can exchange or update
some kinds of hardware and software without suspending services provided by
the LPAR. For the kinds of hardware and software, see Table 1-1. When you
exchange or update any of the kinds of hardware and software, follow the
procedure shown in Table 3-1. (As an example, the procedure to update HVM
firmware is shown in Table 3-1.)
Table 3-1 Procedure to update HVM firmware with Concurrent
Maintenance mode
Process
No.
Process Reference
1 Have all LPARs on HVM 1 migrate to HVM 2.
Concurrent Maintenance mode in Migration
procedures
2 Update HVM firmware.
Hitachi Compute Blade HVM Version
Upgrade/Revision Update Guide
Hitachi Compute Blade 500 Series Management
Module Setup Guide
Hitachi Compute Blade 2500 Series Logical
partitioning manager User Guide
3 Return all LPARs to HVM 1. Return Migration in Migration procedures
Where a periodic or scheduled server migration is to be deployed, We
recommend that you execute a trial migration using Migration functions of
HVM Navigator on the actual target servers and ensure normal operation of
the migration destination in advance. Thereafter, you can restore these
servers using return migration, and start production run. We also recommend
that you register a successful migration instance to a migration policy and
execute policy migration, thus facilitating subsequent migration operation of
the same nature.