Quantum QXS G2 Series, Руководство по установке и обслуживанию оборудования

Страница: 88 / 246

76 QXS G2 Hardware Installation and Maintenance Guide
Host Connection
The QXS-G2-312 and QXS-G2-324 RAID chassis support up to four direct-connect server connections,
two per controller module.
• Use only qualified cables purchased from Quantum for all host connections.
• Connect appropriate cables from the server’s HBAs to the controller module’s host ports as
described below, and shown in the following illustrations.
The QXS-G2-412, QXS-G2-424, and QXS-G2-484 RAID chassis support up to eight direct-connect
server connections, four per controller module.
• Use only qualified cables purchased from Quantum for all host connections.
• Connect appropriate cables from the server’s HBAs to the controller module’s host ports as
described below, and shown in the following illustrations.
Fibre Channel Host Connection
To connect controller modules supporting (4/8/16Gb) FC host interface ports to a server HBA or
switch, using the controller’s CNC ports, select a qualified FC SFP option.
Qualified options support cable lengths of 1 m (3.28'), 2 m (6.56'), 5 m (16.40'), 15 m (49.21'), 30 m
(98.43'), and 50 m (164.04') for OM4 multimode optical cables and OM3 multimode FC cables,
respectively. A 0.5 m (1.64') cable length is also supported for OM3. In addition to providing host
connection, these cables are used for connecting two storage systems via a switch, to facilitate use of
the optional replication feature.
10GbE iSCSI Host Connection
To connect controller modules supporting 10GbE iSCSI host interface ports to a server HBA or switch,
using the controller’s CNC ports, select a qualified 10GbE SFP option.
Qualified options support cable lengths of 0.5 m (1.64'), 1 m (3.28'), 3 m (9.84'), 5 m (16.40'), and 7
m (22.97') for copper cables; and cable lengths of 0.65 m (2.13'), 1 m (3.28'), 1.2 m (3.94'), 3 m
(9.84'), 5 m (16.40'), and 7 m (22.97') for direct attach copper (DAC) cables. In addition to providing
host connection, these cables are used for connecting two storage systems via a switch, to facilitate
use of the optional replication feature.
1Gb iSCSI Host Connection
To connect controller modules supporting 1Gb iSCSI host interface ports to a server HBA or switch,
using the controller’s CNC ports, select a qualified 1Gb RJ-45 copper SFP option supporting (CAT5-E
minimum) Ethernet cables of the same lengths specified for 10GbE iSCSI above. In addition to
providing host connection, these cables are used for connecting two storage systems via a switch, to
facilitate use of the optional replication feature.
Connecting Direct Attach Configurations
A dual-controller configuration improves application availability because in the event of a controller
failure, the affected controller fails over to the healthy partner controller with little interruption to
data flow. A failed controller can be replaced without the need to shut down the storage system. The
QXS-G2-312, QXS-G2-324, QXS-G2-412, QXS-G2-424, and QXS-G2-484 RAID chassis are configured
with dual controller modules.