Lenovo 1043 Server User Manual


 
The data retention time for the battery card assembly is as follows:
BBU name Data retention time
ThinkServer 8708ELP SAS RAID Adapter Battery (iBBU05)
72 hours for 256 Mbytes, using ve 32 Mx16 double
data rate two dynamic random access memory
modules (DDR2 DRAMs) (low power)
72 hours for 256 Mbytes, using three 64 Mx16 DDR2
DRAMs (low power)
ThinkServer 8708EM2 SAS RAID Controller Battery
(iBBU06)
72 hours for 256 Mbytes, using three 64 Mx16 DDR2
DRAMs (low power)
ThinkServer RAID 700 Adapter Battery (iBBU08)
72 hours for 512 Mbytes, using ve 64 Mx16 DDR2
DRAMs (low power)
The data retention time varies according to the following:
Capacity of the battery pack and the battery load
Ambient temperature
Age of the battery
Numbers of discharge cycles the battery has been through
DRAM (dynamic random access memory) size
98 ThinkServer Installation and User Guide