User`s guide

User Guide
60
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LSI 8704 SAS RAID Controller
Notes:
■ For more information, refer to the documentation included
on the ExpressBuilder DVD-ROM.
■ Before installing this card, make sure that your motherboard
is fitted with 667MHz SDRAM FBDIMMs. Malfunctions may
otherwise occur.
Features
■ One internal SAS port.
■ PCI Express performance up to 2.5 Gbits/s per lane.
■ Online RAID level migration.
■ Drive migration: Drive migration is the transfer of a set of hard drives in an
existing configuration from one controller to another. The drives must remain on
the same channel and must be reinstalled in the same order as in the original
configuration. The controller to which you migrate the drives cannot have an
existing configuration.
■ Drive roaming: drive roaming occurs when the physical disks are changed to
different ports on the same controller. When the drives are placed on different
channels, the controller detects the RAID configuration from the configuration
data on the drives.
Configuration data is saved in both the NVRAM on the RAID controller and on
the hard drives attached to the controller. This maintains the integrity of the data on
each drive, even if the drives have changed their target ID.
■ Patrol read.
■ User-specified rebuild rate.
■ Hardware clustering support on the board.
■ 32 Kbyte nonvolatile random access memory (NVRAM) for storing RAID system
configuration information; the MegaRAID SAS firmware is stored in flash ROM
for easy upgrade.
Specifications
■ Hardware Specifications:
- LSISASA1078 with Integrated PowerPC processor.
- PCI Express 1.0a compliant.
- 2.5 Gb/s per lane.
- x4, x8 and x16 lane width.