IBM 4957-J11, Hardware Installation And Maintenance Manual

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• Use a “spotter” to observe installation from the rear of the rack. The spotter should ensure the
inner rail is fully mated with the middle rail track throughout installation.
Rackmount rail kit
Rackmounting rails are developed for use with the Disk Enclosure that installs into 1.2 m rack cabinets.
These rails have been designed and tested for the maximum enclosure weight, and to ensure that
multiple enclosures may be installed without loss of space within the rack. Use the rail kit and mounting
hardware provided by IBM.
Installing the Disk Enclosure
About this task
Enclosure installation involves interrelated steps and product-kit sub-assemblies. The rail kit comprises
left and right rail sub-assemblies that attach to the Disk Enclosure and the rack. The cable management
arm (CMA) comprises sub-assemblies that attach to the Disk Enclosure, rails, and rack.
Warning: Do not attempt to install the enclosure into the rack with disks preloaded into drive
slots. Unload disks (if installed) to a static-protected area and label them. Failure to heed this
Warning and the following guidelines could result in serious injury. Although you can further
lighten the enclosure by removing CRUs, It is not necessary to do so.
This procedure describes adjustment and installation of left and right rail sub-assemblies, followed by
installing the Disk Enclosure into the rack.
Procedure
1. Measure the rail-span depth distance from rear rack post to front rack post, and record this
dimension.
2. Take the left outer rail subassembly in hand; then rotate the middle slide release, and fully extend
the middle slide.
30 IBM Cloud Object Storage System: Medium/Large J11/J12 Disk Enclosure Hardware Installation and
Maintenance Manual