Flash Rom; Boot Strap Rom (Seeprom); Nvsram; Sdram (Cache) - Intel RMS25PB080 Hardware User's Manual

Flash ROM

An 16-MB CFI-compliant flash ROM is used to accommodate RAID firmware and RAID
BIOS Console 2 OpROM.

Boot Strap ROM (SEEPROM)

The serial bootstrap ROM is used to configure the LSI* SAS2208 ROC before the server
board configures the PCI Express* registers. The bootstrap ROM sets the Phase Lock
Loop (PLL) dividers, bootstrap configuration, and so on.

NVSRAM

A 128-KB NVSRAM is used to store disk and drive setup information.

SDRAM (Cache)

The Intel
RMS25CB040 include 1 GB of integrated DDR3 1333 MHz ECC SDRAM memory. This
DIMM is connected directly to the memory controller interface bus of the ROC and serves
as storage for the executable code transferred from the flash. It also serves as cache during
RAID transactions. Cache mode selection takes immediate effect while the server is
online and is available on a per virtual drive basis. The ROC memory controller provides
single-bit ECC error correction with multi-bit detection support.
TheIntel
RMS25CB040 support Intel
Maintenance Free Backup Unit AXXRMFBU2.
The optional Intel
for data cached in the memory. It is connected remotely to the RAID module through a
supplied cable. See the figure below (for reference only). Actual shape of the product may
vary from the figure.
Intel® Integrated RAID Module RMS25PB0x0 and RMS25CB0x0 Hardware User's Guide
®
Integrated RAID Module RMS25PB080, RMS25PB040, RMS25CB080 and
®
Integrated RAID Module RMS25PB080, RMS25PB040, RMS25CB080 and
®
RAID Smart Battery AXXRSBBU9 and Intel
®
RAID Smart Battery AXXRSBBU9 provides a battery backup option
Figure 11. Intel
®
RAID Smart Battery AXXRSBBU9
®
RAID
19