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System Specifications - Lenovo DS4200 Product Manual

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The following figure shows the rear of the ThinkSystem DS Series expansion unit.
Figure 6. ThinkSystem DS Series expansion unit: Rear view
Note: Port B on the DS Series expansion unit is not used.

System specifications

The following table lists the ThinkSystem DS4200 specifications.
Table 1. System specifications
Component
Specification
Form factor
Controller
Two types of controller modules:
configuration
Dual controller configuration only. Both controllers in the system must be of the same type.
RAID levels
RAID 0, 1, 5, 6, and 10.
Controller
16 GB per system (8 GB per controller module). Battery-free cache protection with flash
memory
memory and supercapacitors. Low latency cache mirroring protection for dual controller
configurations.
Drive bays
Up to 240 SFF drive bays per storage system:
Up to 120 LFF drive bays per storage system:
Intermix of SFF and LFF enclosures is supported.
Drive technology SAS and NL SAS HDDs and SEDs, SAS SSDs. Intermix of HDDs and SSDs is supported.
Intermix of SEDs with HDDs or SSDs is not supported.
Lenovo ThinkSystem DS4200 Storage Array
ThinkSystem DS4200: 2U rack mount (Machine Type 4617)
ThinkSystem DS Series Expansion Unit: 2U rack mount (Machine Type 4588)
DS4200 SAS controller module
DS4200 FC/iSCSI controller module
24 SFF drive bays in the DS4200 SFF chassis
24 SFF drive bays in the SFF expansion unit; up to 9 expansion units
12 LFF drive bays in the DS4200 LFF chassis
12 LFF drive bays in the LFF expansion unit; up to 9 expansion units
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