3PAR InForm® OS 2.2.4 Concepts Guide (320-200085 Rev B, March 2009)

11.2

Physical Disk Locations

3PAR InForm OS Concepts Guide InForm OS Version 2.2.4

during installation and setup. Any chunklet can be reserved as a spare, but the system setup

script selects those chunklets as close to the end of the disk logical-block space as possible.

If your system is comprised of a mixture of FC and NL disks, no chunklets are allocated.

■ The remainder of the disk can be used for logical disks.

11.2 Physical Disk Locations

Physical disks are located in storage server drives on drive magazines or in drive modules, and

the magazines and modules are contained in drive cages.

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 11-1.

In a DC3 drive cage, each plug-in drive carrier module holds a single disk numbered 0 through

15. The DC3 drive cage contains 16 drive bays and accepts up to 16 drive carrier modules for a

maximum of 16 physical disks in each drive cage. See Figure 11-1.

To learn more about drive cages, see Chapter 12, Drive Cages.

Figure 11-1. DC2 and DC4 Drive Magazine with Physical Disks

0600_L_R1

Rear

Front