Adaptec Serial ATA II Raid 2420SA interface cards/adapter

4 ports, half-size PCI-X to Serial ATA II RAID 0, 1, 5, 10, RAID 1E, 5EE, 6 Hot Space (RAID 5EE)
Striped Mirror (RAID 1E)
Dual Drive Failure Protection (RAID 6)
Copyback Hot Spare
Snapshot Backup (optional)

Serial ATA II (SATA II), the successor to SATA technology for data storage, is a point-to-point connection that delivers full throughput to each storage device by allowing multiple ports to be managed by a single controller. Adaptec SATA II technology delivers data transfer rates with 3 Gb/s while also supporting 1.5 Gb/s (SATA I).

The Adaptec Serial ATA II RAID 2420SA card is a four-port controller that supports SATA or SATA II direct attached disk drives. It features the Adaptec AIC-8210 SATA RAID-on-Chip (ROC) ASIC and Adaptec RAID Code (ARC) with standard RAID 0, 1, 5, 10 as well as the Adaptec Advanced Data Protection Suite with RAID 1E, 5EE, 6, Copyback Hot Spare and optional Snapshot Backup. With the industry's most advanced feature set, the Adaptec 2420SA provides the highest level of data protection.

Four ports support up to four Serial ATA and Serial ATA II drives
PCI-X 64-bit//133 MHz host interface (3.3 volts only)
Standard Features: RAID 0, 1, 5, 10, hot swap, hot spares, Online Capacity Expansion, RAID Level Migration, Optimized Disk Utilization and the Adaptec Advanced Data Protection Suite with RAID 1E, 5EE, 6, and Copyback Hot Spare
Optional Feature: Snapshot Backup
RoHS compliant
Half-size PCI form factor
Optional battery backup module