Acer DAC960PG Benutzerhandbuch
Battery Backup Unit Option
Manual No. 775012
A-5
Operation
Battery Conditioning Prior to Use
Battery conditioning is automatic. There are no manual procedures for
battery conditioning or preconditioning to be performed by the user.
battery conditioning or preconditioning to be performed by the user.
Set-up – Enabling the Write-Back Cache
The write-back cache is enabled by toggling the write-back/write-through
mode switch. The write-back/write-through mode switch is accessed in the
Onboard Configuration Utility, RAID EzAssist, or in GAM. Refer to the
RAID EzAssist Configuration Utility User Reference Guide or the Global
Array Manager Client Software Installation Guide and User Manual for
instructions on how to examine and change the mode switch.
mode switch. The write-back/write-through mode switch is accessed in the
Onboard Configuration Utility, RAID EzAssist, or in GAM. Refer to the
RAID EzAssist Configuration Utility User Reference Guide or the Global
Array Manager Client Software Installation Guide and User Manual for
instructions on how to examine and change the mode switch.
Battery Backup Capacity
Battery backup capacity is defined as the maximum duration of a power
failure for which data in the cache can be maintained by the battery. The
BBU’s backup capacity varies with the memory configuration installed on
the DAC960PG or DAC960PJ. Battery backup capacity can be reasonably
expected according to Table A-1
failure for which data in the cache can be maintained by the battery. The
BBU’s backup capacity varies with the memory configuration installed on
the DAC960PG or DAC960PJ. Battery backup capacity can be reasonably
expected according to Table A-1
Table A-1. BBU Capacity vs. Cache Memory Configuration
Capacity
Mem Type
Battery Backup Duration
Typical
Minimum
4 MB
EDO ECC RAM
72 hours
40 hours
8 MB
EDO ECC RAM
40 hours
20 hours
16 MB
EDO ECC RAM
68 hours
28 hours
32 MB
EDO ECC RAM
30 hours
14 hours
64 MB
EDO ECC RAM
35 hours
23 hours
128 MB
EDO ECC RAM
20 hours
12 hours