146 QXS G2 Hardware Installation and Maintenance Guide
Continuous Operation During Replacement
Your hardware or software chassis management application determines the capability for replacing a
failed drive without the loss of access to any file system on the chassis. Chassis access and use during
this period is uninterrupted. If a chassis is equipped with redundant PSUs, sufficient power is
provided to the system while the faulty module is replaced.
The QXS-G2-312, QXS-G2-324, QXS-G2-412, QXS-G2-424, and QXS-G2-484 systems support
hot-plug replacement of redundant controller modules, power supplies, and expansion modules.
Hot-add replacement of expansion chassis is also supported.
Firmware Updates
After installing the hardware and powering on the storage system components for the first time,
verify that the controller modules, expansion modules, and drives are using the current firmware
release. Periodically, you should ensure that the firmware versions used in expansion IOMs are
compatible. Also see Updating Firmware on page 84.
Customer-Replaceable Units
This section provides the following information:
• 2U 2-/4-Port Controller RAID Chassis Matrix
• 5U 4-Port Controller RAID Chassis Matrix
• 2U12 RAID Chassis/Expansion Chassis CRUs
• 2U24 RAID Chassis/Expansion Chassis CRUs
• 5U84 RAID Chassis/Expansion Chassis CRUs
• RAID Controllers and Expansion IOMs for QXS G2 Systems
2U 2-/4-Port Controller RAID Chassis Matrix
Tabl e 3 3 provides the type of host attach for the 2U12 and 2U24 controllers in the RAID chassis.
Ta b l e 3 3 2U 2-/4-Port Controller RAID Chassis Matrix
3.5" (LFF) 12-Drive RAID Chassis 2.5" (SFF) 24-Drive RAID Chassis
QXS-G2-
312 &
QXS-G2-
412
System
Description Form QXS-G2-
324 &
QXS-G2-
424
System
Description Form
Fibre Channel (8/16Gb/s)
SFP
1,4
2U12 Fibre Channel (8/16Gb/s)
SFP
1,4
2U24
Internet SCSI (10GbE) SFP
2,4
2U12
Internet SCSI (10GbE) SFP
2,4
2U24
Internet SCSI (1Gb/s) SFP
3,4
2U12
Internet SCSI (1Gb/s) SFP
3,4
2U24
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