Dell Adaptec U320 SCSI Raid 0 or 1 Controller Card - Manual (Page 5)

RAID Levels RAID 0, 1
Interface Channels Two independent SCSI channels
Devices supported per channel 15
Host Interface PCI-X 133 MHz
Storage Interface Ultra320 SCSI
Multiple logical drives/per controller 2
Event logging Controllers supported in system System Event Log and Controller Event Log
Online Capacity Expansion Yes
Hot spare support Gobal Hot Spare Support
Flashable firmware Yes
Hot swap devices supported Yes
Supported Devices See your system documentation for supported devices
Mixed capacity hard disk support Yes
Internal Connectors Two 68-pin Internal LVD/SE connectors
External Connectors Two 68-pin External VHDCI connectors
Disk Configuration Features
Specification Feature
Supported hard disk Capacity Maximum 2 TB
Online RAID Migration Single volume to RAID 1 in SCSISelect BIOS utility
User Specified Rebuild Rate Yes
RAID Performance Features
Specification Feature
Storage Interface transfer rate 320 MB/s per channel
Maximum Outstanding I/Os per drive 16
Supported Stripe Sizes 16KB, 32KB, 64KB
Maximum number of concurrent commands 32
RAID Management Features
Specification Feature
Drive roaming Yes