Hard Disk Drives - Hitachi NAS Platform 4000 Series Hardware Reference Manual

A battery pack may be stored outside of the server for up to one year before it must
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be charged and/or conditioned. After one year without being charged and possibly
conditioned, the battery capacity may be permanently reduced.
If you store battery packs for more than one year, contact your representative to find
out about conditioning your battery packs.
When preparing a server for shipment, if the NVRAM is still being backed up by
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battery (indicated by the flashing NVRAM LED), the battery can be manually isolated
using the reset button. See
reset button.
When preparing a server for shipment or if it will be powered down for any length of
time, it is important that the server has been shut down correctly before powering-
off. Otherwise, if the server is improperly shut down, the batteries supplying the
NVRAM will become fully discharged. This also occurs if the system is powered down
for too long without following the proper shutdown procedure.
Note: If the batteries become fully discharged, or the system is to be
powered down for an extended period, see
shipment or storage (on page 84)
information about recharging batteries.
To replace the NVRAM battery backup pack, see
pack (on page 67)

Hard disk drives

The server contains two hard disks, which are configured as a Linux SW RAID 1 pair, and
they store server or cluster-related data. These hard disks are not part of the customer-
usable data storage that is available to the server.
Hard disks are located behind the bezel on the left side of the chassis.
Note: Failed hard disks are hot-swappable, so a failed hard disk can be
replaced without shutting down the server. However, there are serious risks
in trying to swap a drive that is not failed.
Figure 10 Hard disk drives status and activity status LEDs - model 4040
Hitachi NAS Platform and Hitachi Unified Storage Series 4000 Hardware Reference
Reset button (RST) (on page 55)
.
Chapter 4: Hitachi NAS Platform server components
for the location of the
Powering down the server for
. Contact customer support for
Replacing the NVRAM backup battery
Hard disk drives
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