Long Term Array Storage - Hitachi AMS 2100 Hardware Manual

• Unique Write Same Mode
For details, see the VMware Version Host Installation Guide for Fibre
Channel Connection or the VMware Version Host Installation Guide for iSCSI
Connection.
NOTE: When AMS2100/AMS2300 has a battery failure, the advantages of
this function cannot be obtained. If the ownership of source and destination
LUs differs when Cooperative Function with VMware operates, the
ownership of the target LU is changed to that of the source LU. This
ownership change operates regardless of the setting status of load
balancing. To avoid ownership change, set
DataMover.HardwareAcceleratedMove to 0 in ESX.

Long term array storage

The cache backup batteries in a Hitachi AMS 2000 Family Storage System
array cannot hold a charge indefinitely. If you do not use an AMS 2100/2300
for six months or more, move the batteries to a system that is being used,
or turn the array on for at least 24 hours once every six months.
CAUTION! If the AMS 2100/2300 is not energized for more than 6
months, the battery will likely discharge completely. When the
battery completely discharges, it may be damaged and you may not
be able to recharge it. To prevent this from happening, charge the
battery for a minimum of 24 hours at least once every six months.
Introduction
Hitachi AMS 2100/2300 Storage System Hardware Guide
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