Components And Connectors - Lenovo D1212 Product Manual

The D1212 and D1224 expansion enclosures are designed to offer high levels of system and data
availability with the following technologies:
Dual ESMs provide redundant paths from a supported RAID controller to the drives in
the enclosures for I/O load balancing and failover
Dual-port drives (both HDDs and SSDs) with automatic drive failure detection and RAID rebuild with
global hot spares with a supported RAID adapter
Redundant hardware, including host ports, ESMs, and power and cooling modules (PCMs)
Hot-swappable and customer replaceable components, including ESMs, PCMs, and drives

Components and connectors

The following figure shows the front of the D1212 drive expansion enclosure.
Figure 2. Front view of the D1212 drive enclosure
The following figure shows the front of the D1224 drive expansion enclosure.
Figure 3. Front view of the D1224 drive enclosure
Lenovo Storage D1212 and D1224 Drive Enclosures 3