3PAR InForm® OS 2.3.1 Concepts Guide (320-200112 Rev B, February 2010)

13.4
Physical Disks
3PAR InForm OS Concepts Guide InForm OS Version 2.3.1
Figure 13-2. Rear View of an InServ T-Class Storage Server
13.3 Physical Disks
A physical disk is a hard drive. Each physical disk is mounted on a drive magazine or in a drive
module. The drive magazines and modules are located in drive cages in 3PAR InServ Storage
Servers. There are three types of physical disks: Fibre Channel (FC), Near Line (NL), and Solid
State Drives (SSD).
In DC2 and DC4 drive cages, each drive magazine holds four disks numbered 0 through 3 from
the rear to the front of the magazine. The DC2 and DC4 drive cages contain a maximum of ten
drive magazines for a maximum of 40 physical disks in each drive cage. See Figure 13-3.
0212_L_R1
Hinge
Lock
Drive Cage
Power Supplies
Rear
Door
Controller Node
Power Supplies
Battery Backup
Units (BBUs)
Power Distribution
Units (PDUs)