Prerequisites For The N+M Cold Standby - Hitachi Compute Blade 2000 User Manual

Prerequisites for the N+M cold standby

The followings are prerequisites for the N+M cold standby.
 Supports SAN boot

The standby partition has the same hardware composition as the active
partition.
The type and the number of CPU

Memory capacity installed

Expansion card; I/O board module: type and locations of corresponding

slots
I/O slot expansion unit; I/O adapter for the I/O slot expansion unit: type and

locations of corresponding slots viewed from a partition
 There are the following restrictions when N+M cold standby is configured with
standard server blade (X55A1/X55A2).
An internal HDD (SAS) is not installed in the Xeon server blade. If an

internal HDD (SAS) is installed in the Xeon server blade, disable the internal
HDD in the BIOS setting.
It cannot be composed of the combination of X55A1 model and X55A2

model.
It cannot be composed of the combination of EFI firmware 01-XX/02-XX and

EFI firmware 03-XX/04-XX or later.
 When N+M cold standby is configured in the LP mode, the server blade and its
peripherals must support LPAR manager.
 A standby partition can be replaced with the active partition that has a different
type and number of CPU and memory capacity from the standby partition.
However, confirm that requirements for operating OS and application are
satisfied and both of them can operate on the standby partition by executing the
switching test in advance.
 When N+M cold standby is configured with Emulex 8 Gb 2-port Fibre-channel
adapter or Emulex 8 Gb 2-port Fibre-channel mezzanine card, or Emulex 16 Gb
2-port fibre channel adapter, data on all items in HBA BIOS setup menu is
mirrored. This requires that the SAN configuration between the active partition
and LU should be the same as that between the standby partition and LU.
The number of cascaded stages of FC switches

The port speed setting on FC switches

Speed and topology settings on disk devices

Smart Configure methods can be different between the
active and standby partitions. The required time for
switching methods of Smart Configure depends on that of
the standby partition.
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