HP 283551-B21 Smart Array 5304/256 4-Channel PCI 64/66MHZ Ultra-160 SCSI RAID Controller Card

High performance. 64-bit/66MHz RAID controller featuring 4 Ultra3 SCSI channels with 2 internal and 4 external ports. Transportable 256MB battery-backed cache. Includes Advanced Data Guarding RAID level. Compatible with all ML servers (except ML310. ML330 G2). all DL servers (except DL380 G2 Packaged Cluster) 283551-B21 Product Overview Technical Information Host Interface:     PCI Controller Type:     Ultra3 SCSI RAID Supported:     Yes RAID Levels:     0 RAID Levels:     1 RAID Levels:     0+1 RAID Levels:     5 RAID Levels:     ADG Number of Physical Drive Supported:     56 Number of Logical Drive Supported:     32 Interfaces/Ports Total Number of SCSI Ports:     6 Number of SCSI Ports (Internal):     2 Number of SCSI Ports (External):     4 SCSI Connector Details:     2 HD-68 SCSI Connector Details:     4 VHDCI Physical Characteristics Height:     18.4' Width:     8.3' Depth:     4.0' Form Factor:     Plug-in Card Weight (Approximate):     3.26 lb Miscellaneous Additional Information:      Electrical Interface: LVD (Low Voltage Differential) and SE (Single Ended) Maximum Capacity: 8.2 TB (56 drives x 146.8 GB) PCI 2.2 Compliant Logical Drives: Up to 2TB per Logical Drive Cache Batteries: Up to 3 days of redundant battery life. removable for easy replacement Upgradeable Firmware: 2-MB flashable ROM Memory Addressing: 64-bit. supporting servers memory greater than 4 GB Drive Roaming: Yes Recovery ROM protects against a ROM failure or corruption RAID ADG requires a minimum of 64-MB battery-backed cache Online Management Features: Online Capacity Expansion Online RAID Level Migration Online Stripe Size Migration Multiple Online Spares (Global) User Selectable Read/Write cache User Selectable Expand and Rebuild Priority Insight Manager: Powerful server and server options/storage manager tool Monitors over 1200 server parameters Compatibility:      PC Unix Server Compatibility: ProLiant DL Series: - DL320* - DL320 G2* - DL360 G2 - DL360 G3 - DL380 G2 - DL380 G3 - DL560 - DL580 - DL580 G2 - DL590/64 - DL740 - DL760 - DL760 G2 ProLiant ML Series: - ML350 G2 - ML370 G2 - ML370 G3 - ML530 - ML530 G2 - ML570 - ML570 G2 - ML750 * Supported in DL320 SCSI servers