Installing A Ddic; Populating Drawers; Preparation - Dell EMC ME4 Series Owner's Manual

Installing a DDIC

NOTE: Failed disks must be replaced with approved disks. Contact your service provider for details.
1 Open the relevant drawer.
2 Align the DDIC with the target disk slot as shown in
3 Lower the DDIC into the disk slot.
a Push the DDIC downwards and hold it down.
b Move the slide latch in the direction shown in
Figure 64. Installing a DDIC
1 Slide latch (slides left)
3 Drive Fault LED
4 Verify the following:
a The latch button is in the locked position, as shown in the illustration above.
b The Drive Fault LED is not lit.
5 Close the drawer.

Populating drawers

General guidelines for populating a drawer with DDICs are provided in the Dell EMC ME4 SeriesStorage System Deployment Guide.
Additional guidelines are provided for replacing disks in previously populated drawers, or populating enclosures delivered with the half-
populated enclosure configuration option.

Preparation

Customers with multiple enclosures may spread the 42 disks of an expansion package across those enclosures, provided 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 disks in an enclosure is 14.
• The number of rows must not differ by more than 1 between the top and bottom drawers.
• The rows should be populated from front to rear of drawer
• The disks of the expansion package must match the disks originally shipped with the 5U84 enclosure. Both groups of disks must share
the same model type and capacity.
NOTE: Part numbers for expansion packages are not listed because they change over time when disks ship with new
firmware, or new disk models become available. Contact your account manager for part numbers.
• If the two groups of disks have different firmware, all disks must be updated with current/compatible firmware. See the Dell EMC ME4
Series Storage System Administrator's Guide or online help for additional information about updating firmware.
78 Module removal and replacement
Figure 63. Removing a DDIC (2 of 2)
Figure 64. Installing a DDIC
2
and insert it into the disk slot.
Latch button (shown in locked position)