24
QXS Site Planning Guide
QXS-4 Series RAID and Expansion Physical Requirements
The QXS-4 series RAID and Expansion chassis consist of the following systems:
•
QXS-412 (12-drive, LFF drives)
•
QXS-424 (24-drive, SFF drives)
•
QXS-448 (48-drive, SFF drives)
•
QXS-456 (56-drive, LFF drives)
The floor space at the installation site must be strong enough to support the combined weight of the
rack, RAID chassis, expansion chassis, and any additional equipment. The site also requires sufficient
space for installation, operation, and servicing of the chassis, together with sufficient ventilation to
allow a free flow of air to all chassis.
Composition
The RAID chassis and expansion chassis is comprised of sheet steel that is bonded together using
rivets, welding, and other forced contact methods. The metal surfaces are free from non-conductive
coatings and paint.
Chassis Designators
The RAID and expansion chassis designators are as follows:
•
2U12 chassis (LFF):
• “2U12” denotes the 3.5” 12-drive chassis (with controller or expansion modules)
• The 2U12 chassis is equipped with a drive in each drive slot
•
2U24 chassis (SFF):
• “2U24” denotes the 2.5” 24-drive chassis (with controller or expansion modules)
• The 2U24 chassis is equipped with a drive in each drive slot
•
2U48 chassis (SFF):
• “2U48” denotes the 2.5” 48-drive chassis (with controller or expansion modules)
• The 2U48 chassis includes three installed drawers that must be populated with drives and
possibly air management system (AMS) inserts if applicable, after the chassis is installed into
the rack.
• The table in this section assumes each drive slot contains a drive module.
•
4U56 chassis (high-capacity with LFF drives)
• “4U56” denotes the 3.5” 56-drive chassis (with controller or expansion modules)
• The 4U56 chassis includes two installed drawer slots that must be populated with drives after
the chassis is installed into the rack.
•
Two controller modules or two expansion modules per chassis
•
Two power supplies per chassis
