487204-B21 - Controller SmartArray P812 SAS

Product Placement

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HP Smart Array P812 with 1GB Flash Backed Cache (Raid, 0,1, 1+0, 5, 6) supports 6Gb/s



The HP Smart Array P812 is HP's 24 port Serial Attached SCSI (SAS) RAID controller with PCI Express (PCIe). This high performance SAS RAID controller provides high levels of reliability for HP servers through its support of 6 Gb/s SAS and 3 Gb/s SATA technology, 1 GiB FBWC, and advanced RAID capabilities. This controller ships standard with a Smart Array Advanced Pack license key and supports up to 108 hard drives.





What is Flash Backed Write Cache (FBWC)?



- Battery-Less Cache for Smart Array Controllers

- Uses flash technology for write cache instead of battery

--> BBWC uses a battery to maintain the data by keeping the memory in self refresh to maintain the data

--> FBWC uses a super cap and flash memory to move the contents of standard memory to flash and maintain the data in flash until the power is restored

- Increases cache capacity to 1GB for HP Smart Array Controllers

Increase cache data retention capabilities in excess of existing battery backed write cache (BBWC)

--> Since the contents of memory are written to flash, the 48 hour limit for BBWC is eliminated in the FBWC and the data will be posted to the hard drive on the next power up

- Both BBWC and FBWC use standard memory for the run time solution, so the performance difference is minimal overall, but for certain applications you can see a performance gain with FBWC



Diversa

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Standarddata

Additional Data

Dimensions

Height in cm: 1.2 cm

Width in cm: 11.1 cm

Depth in cm: 31.1 cm

Weights

Warranty Terms: 3 years parts only

Technical Link: http://h18004.www1.hp.com/products/quickspecs/13558_div/13558_div.HTML

Technical Support: 0848 80 20 20