IBM ServeRAID - 5i Ultra320 SCSI Controller interface cards/adapter

The ServeRAID-5i Controller is an innovative PCI controller that works directly with the onboard LSI 1030 SCSI chipset to provide RAID-protected data storage to selected xSeries servers. It supports both Ultra320 and Ultra160 SCSI HDD technologies. Performance features
include:

66MHz, 64-bit, low-profile PCI controller
128MB ECC SDRAM write-back cache with battery backup
Cost effective RAID functionality

RAID levels 0, 00, 1, 10, 5, 50, and IBM exclusive 1E and 1E0
Support for up to eight logical drives composed of 16 physical drives
Logical drive migration and auto sychronization support
Support for stripe unit sizes of 8KB, 16KB, 32KB, or 64KB
Up to 28 physical drives supported per controller
Support for hot- and cold-swapping of hard disk drives
Investment protection and ease of use
Investment protection is provided through the same ServeRAID Manager software used with other ServeRAID controllers.