Technical data

6
Supported
Controller Trays
and
Controller-Drive
Trays
This section describes the supported controller trays and controller-drive trays.
Table 4 Controller Trays and Controller-Drive Trays
Maximum
Number of
Drives and
Volumes for
Controller-Drive
Trays and
Controller Trays
Table 1 shows the controller-drive trays, the controller trays, and the maximum
number of drives and the total number of volumes that are supported by each
controller tray or controller-drive tray. The total numbers include drives or volumes
that are contained in the controller-drive tray and in additional attached drive trays.
Table 5 Supported Trays and the Maximum Number of Drives and Volumes
The following table lists controller-drive trays and controller trays can co-exist in a
storage network with hardware running storage management software version 10.83
and controller firmware version 7.83. They cannot, however, be upgraded to storage
management software version 10.83 and controller firmware version 7.83.
Term Description
Controller tray A unit that contains one or two controllers, a battery
(optional), and redundant cooling fans and power
supplies. Controller trays do not contain environmental
services modules (ESMs).
Controller-drive tray A unit that contains up to 16 drives, redundant cooling
fans and power supplies, and (depending on the model)
one or two controllers. Controller-drive trays do not
contain ESMs.
Tray Name
Controller
Type
Maximum
Drives per
Storage Array
Maximum
Volumes per
Storage Array
1
Controller-drive trays
E2600 192 512
CE4900 1280 or 2560 112 1024
E5400 4096 or 8192 384 2048
Controller trays
CE7900,
CE7922
480
1
Snapshot (Legacy) repository volumes and Synchronous Mirroring
repository volumes are included in the number of volumes supported.
2
Additional drive trays are not supported.