Dell EMC ME4084 Owner's Manual page 53

Installing a DDIC in a 5U enclosure
Failed disk drives must be replaced with approved disk drives. Contact your service provider for details.
1. Align the DDIC with the target drive slot as shown in
2. Lower the DDIC into the drive slot.
a) Push the DDIC downwards and hold it down.
b) Move the slide latch in the direction shown in the following figure:
Figure 52. Installing a DDIC
1. Slide latch (slides left)
3. Drive Fault LED
3. Verify the following:
a) The latch button is in the locked position.
b) The Drive Fault LED is not lit.
4. Close the drawer.
Populating drawers
The general guidelines for populating a drawer with DDICs are provided in the Dell EMC PowerVault ME4 Series Storage System
Deployment Guide. Additional guidelines are provided for replacing disk drives in previously populated drawers, or populating enclosures
delivered with the half-populated enclosure configuration option.
Preparation
Disk drives are shipped in expansion packages of 42 drives. Customers with multiple enclosures may spread the 42 disk drives of an
expansion package across multiple enclosures, provided that the DDICs are installed 14 at a time to completely fill empty rows. The
installation pattern providing the best airflow and thermal performance is described in this section.
The drawers must be populated with DDICs in whole rows. Each drawer contains 3 rows of 14 DDICs. Rules and assumptions are listed:
• The minimum number of DDICs in an enclosure is 28.
• The number of rows must not differ by more than 1 between the top and bottom drawers.
• The rows should be populated from the front of the drawer to the rear of the drawer
• If a second expansion package of disk drives is shipped to a customer, the disk drives of the second expansion package must match
the disk drives that were originally shipped with the 5U84 enclosure. Both groups of disk drives must share the same model type and
capacity.
NOTE: Part numbers for expansion packages are not listed because they change over time when disk drives ship with
new firmware, or new disk drive models become available. Contact your account manager for part numbers.
• If the two groups of disk drives have different firmware, all disk drives must be updated with current/compatible firmware. See the
Dell EMC PowerVault ME4 Series Storage System Administrator's Guide or online help for additional information about updating
firmware.
Installation guidelines
The recommended order for partially populating disk drives in the 5U84 enclosure optimizes the airflow through the chassis.
5U84 enclosure—front panel components
The 5U84 ships with drawers installed in the chassis. However, to avoid shock and vibration issues during transit, the enclosure does not
ship with DDICs installed in the drawers. An enclosure is configured with either 42 disk drives (half-populated) or 84 disk drives (fully
populated) for customer delivery. If half-populated, the rows containing disk drives should be populated with a full complement of DDICs
(no blank slots in the row). The following list identifies rows in drawers that should contain DDICs when the enclosure is configured as
half-populated:
• Top drawer–front row
• Top drawer–middle row
• Bottom drawer–front row
If additional disk drives are incrementally installed into a half-populated enclosure, the DDICs must be added one complete row at a time
(no blank slots in row) in the sequence listed:
• Bottom drawer–middle row
• Top drawer–back row
Figure 51. Removing a DDIC (2 of 2)
shows the location and indexing of drawers accessed from the enclosure front panel.
and insert it into the drive slot.
2. Latch button (shown in locked position)
Module removal and replacement
Figure 19.
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