Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 214)

APPENDIX
214
Note:
1. Low profile bracket also provided.
2. The FBM will occupy one PCI slot on the host backplane.
B-6 Flash-based Backup Capacity
The FBM backup capacity is defined as the maximum duration of a
power failure for which data in the cache memory can be written
into the flash on ARC-1883-CAP/BAT. The FBM can support up to
2GB memory chips that installed on the 12Gb/s SAS RAID control-
ler.
B-7 Operation
1. There are no manual procedures for FBM conditioning or precon-
ditioning to be performed by the user.
2. No further power is required once the super capacitor is fully
charged.
Note:
Do not remove FBM while system is running.