Product: Storage Enclosure 12 X 3.5inch - 1/3h Hot Swappable Compatible For Storage Works Msa20. 
 General: 
device Type : Hard Drive Array 
enclosure Type : Rack-mountable - 2u 
 Cabinet (chassis): 
built-in Devices : Led Panel 
installed Devices / Modules Qty : 0 
supported Devices / Modules Qty : 12 
supported Drives : Serial Ata-150 
 Storage: 
hdd Array External Interface : Ultra320 Scsi 
 Storage Controller: 
type : Serial Ata ( Ultra320 Scsi ) 
channel Qty : 1 
controller Interface Type : Serial Ata-150 
data Transfer Rate : 150 Mbps 
supported Devices : Hard Drive 
 Hard Drive: 
type : Hot-swap - Plug-in Module 
capacity : 0 
interface Type : Serial Ata-150 
 Expansion / Connectivity: 
expansion Bays Total (free) : 12 ( 12 ) X Hot-swap - 3.5 X 1/3h 
interfaces : 1 X Ultra320 Scsi Lvd - 68 Pin Vhdci (mini-centronics) 
 Power: 
power Device : 2 X Power Supply - Hot-plug - Plug-in Module 
max Supported Qty : 2 
power Redundancy : Yes 
power Redundancy Scheme : 1+1 
voltage Required : Ac 120/230 V ( 50/60 Hz ) 
 Dimensions : 
width : 19.3 In 
depth : 23.5 In 
height:3.5 In 
weight: 55 Lbs