Array Modules (3Tb Hard Drives); Expansion Modules (1Tb And 2Tb Hard Drives); Figure 11 Array Module Raid Sets (3Tb Hard Drives) - Quantum DXi8500 User Manual

Chapter 1: DXi8500 System Description
DXi8500 Storage Systems
Array Modules (3TB
Hard Drives)
Figure 11 Array Module RAID
Sets (3TB Hard Drives)
Expansion Modules
(1TB and 2TB Hard
Drives)
28
Each Array module (RBOD) contains 12 SATA hard drives (3TB each) and
provides a usable capacity of 15TB. Up to two Array modules can exist in
the base rack.
Every module supports RAID 6 with five global hot spares per tray (see
Figure 11).
Array modules — RAID set characteristics:
• The first five drives in each Array module (Drives 1 through 5) are
the global hot spares for that enclosure and for Expansion modules
attached to the Array.
• The remaining hard drives in each Array module (Drives 6 through
12) are configured into a RAID 6 set (5 + 2).
Global Hot Spares
Drive 1
Drive 5
Drive 9
Each Expansion module (EXP-MOD) contains 16 SATA hard drives and
provides a usable capacity of 10TB (with 1TB drives) or 20TB (with 2TB
drives). When using 1TB Array module drives, from 1 to 10 Expansion
modules can be added to an expansion rack. When using 2TB Array
module drives, from 1 to 6 Expansion modules can be added to an
expansion rack. Every Expansion module supports RAID 6 with two hot
spares per tray (see Figure
Drive 2 Drive 3
Drive 6 Drive 7
Drive 10 Drive 11
RAID set (5 + 2)
12).
Quantum DXi8500 User's Guide
Drive 4
Drive 8
Drive 12