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32 Features
Cache Preservation With Non-Volatile Cache (NVC)
In essence, the NVC module allows controller cache data to be stored
indefinitely. If the controller has data in cache memory during a power outage
or improper system shutdown, a small amount of power from a battery is used
to transfer cache data to non-volatile flash storage where it remains until
power is restored and the system is booted.
Cache Data Recovery
The dirty cache LED that is located on the H710 and H810 cards cannot be
used to determine if cache data is being preserved. If a system power loss or
improper system shutdown has occurred, restore the system power and boot
the system. During the boot, enter the controller's BIOS Configuration
Utility (<Ctrl><R>) to ensure that there is no cache data being preserved.
This can be done by entering into the controller menu and selecting
Managed Preserved Cache. If there are no virtual disks listed here, all
preserved cache data has been written to disk successfully.
Battery Transparent Learn Cycle
NOTE: Batteries are only supported on PERC H710, H710P and H810 cards.
A transparent learn cycle is a periodic operation that calculates the charge
that is remaining in the battery to ensure there is sufficient energy. The
operation runs automatically, and causes no impact to system or controller
performance.
The controller automatically performs the Transparent Learn Cycle (TLC) on
the battery to calibrate and gauge its charge capacity once every 90 days. The
operation can be performed manually, if required.
NOTE: Virtual disks stays in Write Back mode, if enabled, during transparent learn
cycle. When the TLC completes, the controller sets the next TLC to +90 days.
TLC Time Frame
The time frame for completion of a learn cycle is a function of the battery
charge capacity and the discharge and charge currents used. For PERC H710
or H810 cards, the expected time frame for completion of a learn cycle is
approximately seven hours.