80 VNX5700 Hardware Information Guide
Disk-array enclosure
When the 4U, 60 DAE is used in combination with the 3U, 15 DAE, the 4U or the 3U DAE
can accomodate the Vault drives. The use of which DAE will use the Vault drives will be
determined by the customer requirements as all 40U Dense racks with the 4U DAE are
customer requested and assembled and configured at the factory.
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, refer to the
Replacing a disk in a 60-disk enclosure
document
.
To accommodate the 4U, 60 DAE, a 40U Dense rack is required. The Dense rack is 44
inches (111.76 cm) deep. Because each DAE weighs 57.8 lb (26.28 kg) empty and 213 lb
(96.62 kg) fully loaded, a DAE vertical slide bar interlock mechanism is provided in the
Dense rack to prevent the extension of no more than one DAE at a time.
Access to disk drives, LCCs, and cooling modules
Unlike the 2U and 3U DAEs, the 4U, 60 DAE is a drawer-type of DAE that slides in and out
of the 40U Dense rack. It is not fixed to the rack. The disk drives, LCCs, and cooling
modules for the DAE are located inside the DAE.
When sliding the 4U, 60 DAE out of or into the rack, be careful not to bind the power and
SAS cabling attached to the cable management arms on the back of the DAE.
To gain access to the DAE, you must first, release the cable management arms and move
them to either side on the back of the DAE (see the Opening the cable management arms
task in the procedure). Then, pull up on the Dense rack vertical slide bar interlock
mechanism. Next, to unlock the DAE from the rails, pull on the orange loops on each side
of the DAE (location 1 in Figure 69 on page 81). Finally, pull the orange tabs on each side
of the DAE to slide the DAE out of the rack on its rails until it locks into the secure service
position (location 2 in Figure 69 on page 81).
Note: If the 4U, 60 DAE does not slide out of the rack, verify that all the other DAEs are
completely seated in the rack by pushing firmly on them.
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:
When lifting this DAE, always use two people and a lifting device.
For service personnel, when accessing this unit in a rack above 31U, always use an EMC
authorized step ladder.
When mounting this unit in a partially filled rack, load the rack from the bottom to the top
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