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flash module is selected for better performance and less power consumption. In Cache‐to‐
Flash recovery phase, BIOS will check C2F flag status. If C2F flag is ON, I/O cache data will
be recovered from the M.2 flash module and then continue normal booting. If C2F flag is
OFF, the normal booting process continues. Compared with traditional BBM solution of 72
hours standard, Cache-to-Flash technology is more efficient, less risky and consumes less
power.
2.7.2.
Features of the Cache-to-Flash Module
The optional Cache-to-Flash module comes with a M.2 flash module and either a BBM or a
SCM. All modules are hot pluggable with zero system downtime for extra availability and
reliability. M.2 flash module can be plugged in on the left hand side from the rear of the
chassis. Power module can be plugged in on the right hand side from the rear of the chassis.
Please be noted that the BBM can protect all memory capacity. But the SCM can protect up
to 16GB memory per controller. If your controller memory is higher than 16GB, please select
BBM solution.
Table 2-12
Protection Memory Capacity by Different Cache-to-Flash Module
Device
Protection Memory Capacity
Battery Backup Flash Module
Protect all memory capacity
Super Capacitor Flash Module
Protect up to 16GB memory per controller
