EMC VNX Series Hardware Information Manual page 122

Disk-array enclosures
Access to the internal components in a 4U, 60 (DAE7S) enclosure mounted 31U (4.5 ft, or
1.38 m) or higher above the floor requires an appropriate EMC service ladder and is
restricted to authorized service personnel only. Attempts to service disks, fans, or other
DAE components mounted 31U or higher without a recommended EMC service ladder and
personnel may result in serious personal injury. If an EMC service ladder is on site, this
ladder is the property of EMC and is only available for use by authorized EMC service
personnel.
If installing a new 4U, 60 DAE or replacing an existing 4U, 60 DAE above 31U is necessary,
then an appropriate portable mechanical lifting device is required. For more information
about this type of device, see "Appendix B: Field lift tool and accessory kit" on page 168.
If replacing or adding a 4U, 60 (2.5- or 3.5-inch) DAE becomes necessary, a portable
mechanical lift is recommended by EMC. The portable lift commonly used by EMC service
personnel is manufactured by Alum-A-Lift. Included with the lift is a lift kit which provides
instructions for using the portable lift. For more information, refer to "Appendix B: Field lift
tool and accessory kit" on page 168.
IMPORTANT
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 168.
Refer to the following CAUTION on page 123 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 their respective Customer
Replaceable Unit (CRU) procedure for the 4U, 60 DAE. For example, to replace a disk drive,
Replacing a disk in a 60-disk enclosure
refer to the 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.
122 EMC VNX8000 Hardware Information Guide