Rohde & Schwarz R&S VENICE 2U, Руководство по оборудованию

Страница: 38 / 90

Overview
 Battery Backup Unit
2-24 VENICE 2U | Hardware Guide | Version 1.2
Rohde & Schwarz DVS GmbH
2.4 Battery Backup Unit
To prevent data loss especially for the metadata, the system/metadata
hard disks (see section “Introduction to RAID” on page 5-2) are pro-
tected by a battery backup unit (BBU). If the system’s operation gets in-
terrupted, for example, in case of a power failure, it will provide power
to the cache of the connected RAID controller, so that buffered data will
not get lost. Once the operation of the system is restored, the cached
data will be written to the hard disks.
The battery backup unit is located inside the casing of the R&S DVS sys-
tem, above the power supply, protected by a metal casing:
Figure 2-15: Location of battery backup unit inside the system
The battery backup unit is a rechargeable battery that will be charged
automatically when the system is turned on.
The position of the battery backup unit may vary depending on the sys-
tem.