Model: AL13SEB600 with R- TRAY Interface: 2.5" SAS Form Factor: 2.5" (These are 2.5" and not 3.5", so please make sure of your servers form factor before making the purchase) Rotation Speed: 10000rpm MPN: AL13SEB600-Generic FW Storage Capacity: 600gb Brand: Toshiba Compatible with: R310 R410 R510 T610 T710 R910 R810 R720XD R730XD Dell R610 R620 R630 R710 R720 R730 HP: DL360 DL380 DL385 G5 G6 G7 Servers and many others!.