74 EMC VNX8000 Hardware Information Guide
Disk-array enclosures
Number of supported DAEs and disks
The number of DAEs and the disks supported by the VNX8000 platform is variable
depending on the type of DAE. Typically, the VNX8000 platform supports up to sixty 2U,
25 (2.5-inch) DAEs (for a total of 1,500, 2.5-inch disk drives), up to one-hundred 3U, 15
(2.5- or 3.5-inch) DAEs (for a total of 1,500, 2.5- or 3.5-inch disk drives), up to twelve 3U,
120 (3.5-inch) DAEs (for a total of 1,440, 2.5-inch disk drivers), or up to twenty-five 4U, 60
(2.5- or 3.5-inch) DAEs (for a total of 1,500, 2.5- or 3.5-inch disk drives).
Configurations with mixtures of 2U, 3U, and 4U DAEs are also possible dependent 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 that VNX8000 platform.
Do not
try to add more disk drives than
the software can support. The VNX8000 platform supports up to a maximum of 1000 disk
drives.
General
Each VNX8000 platform DAE typically consists of the following components:
◆ Drive carrier
◆ Disk drive
◆ Midplane
◆ Link control cards (LCCs)
◆ Inter Connect Modules (ICMs)
10
◆ Power supply
◆ Cooling modules
11
◆ 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 59 on page 77 and Figure 67 on page 85).
10. The 4U, 60 disk drive DAE includes Inter Connect Modules (ICMs). “4U, 60 (2.5- or 3.5-inch) DAE
(DAE7S)” on page 111
provides more information about the 4U, 60 disk drive DAE.
11. The 4U, 60 disk drive DAE has separate power supplies and cooling modules (fans).
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