118 EMC VNX5400 Hardware Information Guide
Disk-array enclosures
The portable mechanical lift commonly used by EMC service personnel has two
settings—one with a lower mast and one with both a lower and upper mast (dual mast).
The lower mast setting is rated for 400 lb (178.09 kg) and is for raising or lowering of
objects 28U (4.08 ft or 1.2 m) or less above the floor. The dual mast setting is rated well
under 200 lb (89 kg) and is for raising objects more than 28U (4.08 ft or 1.2 m) above the
floor. A conversion kit from Alum-A-Lift and a support table is available from the lift
provider for installations above 28U. This kit is rated for 225 lb (102 kg). For more
information, refer to “Appendix B: Field lift tool and accessory kit” on page 135.
Refer to the following CAUTION that discusses the mounting and servicing of the 4U, 60
DAE in a 40U Dense rack.
To replace or add any of these components, refer to the respective Customer Replaceable
Unit (CRU) procedure for the 4U, 60 (2.5- or 3.5-inch) DAE. For example, to replace a disk
drive, refer to the
Replacing a disk in a 60-disk enclosure
document
available online at
https://mydocs.emc.com/VNX/ and go to VNX Tasks,
then select Replace VNX hardware.
Next, follow the steps in the wizard.
To prevent bodily injury when mounting or servicing the 4U, 60 DAE in a Dense rack, you
must take special precautions to ensure that the DAE remains stable. The following
guidelines are provided to ensure your safety:
1. When lifting this DAE, always use two to three people and a portable mechanical lifting
device.
2. For service personnel, when accessing this unit in a rack above 31U, always use an
EMC authorized ladder.
3. When mounting this unit in a partially filled rack, load the rack from the bottom to the
top with the heaviest component at or close to the bottom of the rack.
4. If the rack is provided with stabilizing devices, install the stabilizers before mounting
or servicing the DAE in the rack.
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