Specifications

Chapter 11 HP NetRAID-2M Battery Backup Unit
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on the wire in the lower-left corner into the connector at J21, as shown in the
following figure. The connector is keyed to make sure the proper connection is
made.
Figure 11-1. HP NetRAID-2M Battery Backup Unit with the Battery Pack
Connected
Battery Specifications
Charge Time for Battery Packs
The Backup Battery is shipped from the factory in an uncharged state. It takes
approximately six hours to charge the battery after it is first installed.
Battery Life
The HP NetRAID-1M and 2M software warns you when the battery needs to be
replaced. Under normal usage, the battery should last twice the warranty period
of the HP NetRAID-2M adapter. A new battery pack should be installed every 1
to 5 years.
Retention Time for Cache Memory
The Battery Backup Unit can preserve data in the HP NetRAID-2M DRAM for
up to approximately 72 hours for the 64-MB cache and approximately 48 hours
Battery Backup Unit
BBU
Connection