The following figure shows the rear of the D1212 and D1224 drive enclosures.
Figure 4. Rear view of the D1212 and D1224 drive enclosures
Note: The ESMs (shown in Figure 4) have additional service ports with a specialized connector, and these
ports are reserved for use by a Lenovo service technician.
System specifications
The following table lists the D1212 and D1224 system specifications.
Table 1. System specifications
Components Specification
Form factor 2U rack mount
Number of ESMs 2
Expansion ports 3x 12 Gb SAS x4 (Mini-SAS HD SFF-8644) ports (A, B, C) per ESM
Drive bays D1212: 12 LFF hot-swap drive bays; up to 8x D1212 enclosures can be daisy chained
on a supported RAID adapter or HBA for a total of up to 96 LFF drives.
D1224: 24 SFF hot-swap drive bays; up to 8x D1224 enclosures can be daisy chained
on a supported RAID adapter or HBA for a total of up to 192 SFF drives.
Intermix of SFF and LFF enclosures is supported.
Drive
technologies
SAS and NL SAS HDDs and SEDs; SAS SSDs. Intermix of HDDs, SEDs, and SSDs is
supported within an enclosure, but not within a RAID array.
Drive connectivity Dual-ported 12 Gb SAS drive attachment infrastructure.
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