Ibm - System Storage Ds3524 Model Dual Controller Hard Drive Array. 
 General: 
device Type : Hard Drive Array 
enclosure Type : Rack-mountable - 2u 
 Cabinet (chassis): 
installed Devices / Modules Qty : 0 
supported Devices / Modules Qty : 24 
supported Drives : Serial Attached Scsi 2 
 Storage: 
max Supported Capacity : 12 Tb 
hdd Array External Interface : Serial Attached Scsi 2 
 Storage Controller: 
type : Raid 
cache / Buffer Size ( Max ) : 1 Gb 
supported Devices : Disk Array (raid) 
raid Level : Raid 0, Raid 1, Raid 3, Raid 5, Raid 6, Raid 10 
 Hard Drive: 
type : Hot-swap - Plug-in Module 
capacity : 0 
 Expansion / Connectivity: 
expansion Bays Total (free) : 24 ( 24 ) X Hot-swap - 2.5 Sff 
interfaces : 2 X Serial Attached Scsi 2 ( Input ) - 26 Pin 4x Shielded Mini Multilane Sas (sff-8088) 1 X Serial Attached Scsi 2 ( Output ) - 26 Pin 4x Shielded Mini Multilane Sas (sff-8088) 2 X Ethernet ( Management ) 
 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 ) 
power Provided : 585 Watt 
 Dimensions & Weight: 
width : 17.7 In 
depth : 19.2 In 
height : 3.5 In