70 EMC VNX5400 Hardware Information Guide
Disk-array enclosures
Number of supported DAEs and disks
The number of DAEs and the disks supported by the VNX5400 platform is variable
depending on the type of DAE. Typically, the VNX5400 platform supports up to nine 2U,
25 (2.5-inch) DAEs (for a total of 225, 2.5-inch disk drives), up to fifteen 3U, 15 (2.5- or
3.5-inch) DAEs (for a total of 225, 2.5- or 3.5-inch disk drives), up to one, 3U, 120
(3.5-inch) DAE (for a total of 120, 2.5-inch disk drives), or up to three 4U, 60 (2.5- or
3.5-inch) DAEs (for a total of 180, 2.5- or 3.5-inch disk drives).
Configurations with mixtures of 2U, 3U, and 4U DAEs are also possible depending on the
drive slot count. However, if the 3U, 120 or the 4U, 60 DAE is used as part of your request
for a mixture of DAE types, due to the depth of the 3U, 120 and 4U, 60 DAEs, the Dense
rack is always required and the storage system is not customer installable.
Additionally, you cannot build an environment beyond the supported software and
hardware requirements for the VNX5400 platform.
Do not
try to add more disk drives than
the software can support. The VNX5400 platform supports up to a maximum of 250 disk
drives.
General
Each VNX5400 platform DAE typically consists of the following typical components:
◆ Drive carrier
◆ Disk drive
◆ Midplane
◆ Link control cards (LCCs)
◆ Inter Connect Modules (ICMs)
9
◆ Power supplies
10
◆ Cooling modules
◆ EMI shielding
Drive carrier
In a 2U, 25 and 3U, 15 DAE, the disk drive carriers are metal and plastic assemblies that
provide smooth, reliable contact with the enclosure slot guides and midplane connectors.
Each carrier has a handle with a latch and spring clips. The latch holds the disk drive in
place to ensure proper connection with the midplane. Disk drive activity/fault LEDs are
integrated into the carrier (Figure 52 on page 73 and Figure 60 on page 81).
9. The 4U, 60 DAE includes Inter Connect Modules (ICMs). “4U, 60 (2.5- or 3.5-inch) DAE (DAE7S)”
on page 107 provides more information about the 4U, 60 DAE.
10. The 3U, 120 and 4U, 60 DAEs have separate power supplies and cooling modules (fans).
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