HP Smart array 642  # 291967-B21 / 305415-001
Compatibility     HP ProLiant DL320 G3, DL380 G4, DL580 G3, ML 310 G2, ML310 G3, ML330 G3, ML350 G4, ML350 G4p, ML370 G4, ML570 G3
Data Transfer Rate     320 MBps
Max Storage Devices Qty     21
Supported Devices     Hard drive, disk array (RAID) SCSI
RAID Level     RAID 0, 1, 1+0, 5
Memory buffer size     64MB (upgrade 128MB BBWC to 192MB)
Device Type     Storage controller (RAID) plug in CARD  SCSI U320
Interfaces     1x Storage - Ultra320 SCSI LVD ( Internal )
1x Storage - Ultra320 SCSI LVD (External )
Compatible Slots     PCI-X / 133 MHz