Dell PowerVault ML6000, Руководство по обслуживанию

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120 Library Installation and CRU Replacement
• If you are adding a module above a previously racked 9U Library Expansion Module, count nine
full units from the location of the 9U Library Expansion Module’s rack ears, and prepare to install
the nut clip (or cage nut) to that location on the rack.
For example, if the 9U Library Expansion Module’s rack ears are located at 1U and 2U, the nut
clips (or cage nuts) should be installed at 10U and 11U.
Next, determine which holes you must use within the 10U and 11U markers. Notice that each
rack unit (U), as delineated by the alignment markers in the rack, contains three mounting
holes.
• If you are adding a module anywhere above the 5U Library Control Module, position the nut
clip (or cage nut) at the middle hole in that unit.
• If you are adding a module anywhere below the 5U Library Control Module, position the nut
clip (or cage nut) at the upper hole in that unit.
• If you are adding a module directly above a previously racked 5U Library Control Module, count
five full units from the location of the 5U Library Control Module’s rack ears, and prepare to
install the nut clip (or cage nut) to that location on the rack.
For example, if the 5U Library Control Module’s rack ears are located at 1U and 2U, the nut
clips (or cage nuts) should be installed at 6U and 7U.
Next, determine which holes you must use within the 6U and 7U markers. Notice that each rack
unit, as delineated by the alignment markers in the rack, contains three mounting holes.
• If you are adding a module anywhere above the 5U Library Control Module, position the nut
clip (or cage nut) at the middle hole in that unit.
• If you are adding a module anywhere below the 5U Library Control Module, position the nut
clip (or cage nut) at the upper hole in that unit.
3 Install the nut clips (or cage nuts) to the desired location in the rack.
Installing nut clips:
a. Hold the nut clip so that its semi-circle design faces outside the rack.
b. Push the nut clip onto the rack’s mounting holes so that the nut is behind the rack’s holes. (After
the nut clip is installed, you can slide it up and down the mounting holes, if necessary.)
Installing cage nuts:
a. Hold the cage nut so that its hinges face outside the rack, and so that its hinges clasp the upper
and lower portions of the square hole.
b. Place the cage nut in the desired hole. Insert one hinge in the hole first, then pinch the cage nut
and push it into the hole until it snaps into place. (You may want to use a screwdriver to help
push the hinge into the hole.)
4 Prepare the module to be stacked in the rack.
a. Power off the module and disconnect all power cords, network data cables, and module-to-
module cables.
b. Consider removing all tape drives, tape cartridges, and power supplies from the module.
Modules are much easier to lift into the rack without the additional weight of the tape drives.
Note
Consider using the following method to determine where to install the nut
clips (or cage nuts), rather than adding the module to the rack first. If you
add the module to the rack first, installing the nut clips (or cage nuts) can
be difficult because rack space has become restricted.