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The ServeRAID M5016 SAS/SATA 6Gb/s Controller offers an enterprise grade RAID solution for internal HDDs and integrates popular 6 Gbps SAS technology into an organization's storage infrastructure. In addition, M5016 comes with Flash-Backed cache offload allowing clients to have extended-life cached data protection in their storage subsystem in the event of an unexpected power outage. It features auto-resume on array rebuild or array reconstruction after loss of system power.
auto-resume uses non-volatile NVRAM to save rebuild progress during a host reboot or power failure to automatically resume from the last checkpoint. Auto-resume ensures that data integrity is maintained through the process. The card supports a number of features that are able to be implemented without rebooting the server. Applications such as email and web server benefit from avoiding downtime during transition.
LSI CacheVault flash cache protection uses NAND flash memory powered by a supercapacitor to protect data stored in the controller cache. This module eliminates the need for a lithium-ion battery commonly used to protect DRAM cache memory on PCI RAID controllers. To avoid the possibility of data loss or corruption during a power or server failure, CacheVault technology transfers the contents of the DRAM cache to NAND flash (CacheVault flash module - CVFM) using power from the CacheVault power module (CVPM). After the power is restored to the M5016 RAID controller, CacheVault technology transfers the contents of the NAND flash back to the DRAM, which will eventually be flushed to disk.