Form factor •ThinkSystem DS4200: 2U rack mount (Machine Type 4617) •ThinkSystem DS Series Expansion Unit: 2U rack mount (Machine Type 4588)
Controller configuration Two types of controller modules: •DS4200 SAS controller module •DS4200 FC/iSCSI controller module 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 memory 16 GB per system (8 GB per controller module). Battery-free cache protection with flash memory and supercapacitors. Low latency cache mirroring protection for dual controller configurations.
Drive bays Up to 240 SFF drive bays per storage system: •24 SFF drive bays in the DS4200 SFF chassis •24 SFF drive bays in the SFF expansion unit; up to 9 expansion units Up to 120 LFF drive bays per storage system: •12 LFF drive bays in the DS4200 LFF chassis •12 LFF drive bays in the LFF expansion unit; up to 9 expansion units 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.
Drive connectivity Dual-ported 12 Gb SAS drive attachment infrastructure. Controller unit with two controller modules (ports per one controller module): •24x 12 Gb SAS internal drive ports (SFF enclosure) •12x 12 Gb SAS internal drive ports (LFF enclosure) •1x 12 Gb SAS x4 (Mini-SAS HD SFF-8644) expansion port for the attachment of the expansion enclosures Expansion unit with two expansion modules (ports per one expansion module): •24x 12 Gb SAS internal drive ports (SFF enclosure) •12x 12 Gb SAS internal drive ports (LFF enclosure) •3x 12 Gb SAS x4 (Mini-SAS HD SFF-8644) expansion ports; two of these ports (Ports A and C) are used for the daisy chained attachment of the expansion enclosures; Port B is not used.
Drives SFF drives: •300 GB, 600 GB, and 900 GB 15K rpm 12 Gb SAS HDDs •600 GB, 900 GB, 1.2 TB, and 1.8 TB 10K rpm 12 Gb SAS HDDs •1.2 TB 10K rpm 12 Gb SAS SED HDD •1 TB and 2 TB 7.2K rpm 12 Gb NL SAS HDDs •3.84 TB and 7.68 TB 12 Gb SAS SSDs (1 DWD) •400 GB, 800 GB, and 1.6 TB 12 Gb SAS SSDs (3 DWD and 10 DWD) •800 GB 12 Gb SAS SED SSD (10 DWD) LFF drives: •900 GB 10K rpm 12 Gb SAS HDDs •2 TB, 4 TB, 6 TB, 8 TB, and 10 TB 7.2K rpm 12 Gb NL SAS HDDs •4 TB 7.2K rpm NL 12 Gb SAS SED HDD •400 GB 12 Gb SAS SSDs (3 DWD and 10 DWD)
Storage capacity •SFF drives: Up to 1.84 PB (240x 7.68 TB 2.5-inch SAS SSDs) •LFF drives: Up to 1.2 PB (120x 10 TB 3.5-inch NL SAS HDDs)
Host connectivity DS4200 SAS controller module: 4x 12 Gb SAS host ports (Mini-SAS HD, SFF-8644). DS4200 FC/iSCSI controller module: 4x SFP/SFP+ host ports with two built-in dual-port CNCs (each port on the same CNC must have the same connectivity type; different CNCs might have different connectivity types).
Host operating systems Microsoft Windows Server 2012, 2012 R2, and 2016; Red Hat Enterprise Linux (RHEL) 6 and 7; SUSE Linux Enterprise Server (SLES) 11 and 12; VMware vSphere 5.5 and 6.0; Citrix XenServer 6.5.
Standard software features Intelligent Real-time Tiering for HDDs, Virtualized Storage Pools, Thin Provisioning, SSD Read Cache, Rapid RAID Rebuild, Snapshots (up to 128 targets), All Flash Array.
Optional software features Intelligent Real-time Tiering for SSDs, Snapshots (up to 1024 targets), Asynchronous Replication.
Performance Dual controller configuration •Up to 250000 random disk read IOPS •Up to 7 GBps sequential disk read throughput •Up to 6 GBps sequential disk write throughput
Configuration maximums Per system: •Maximum number of virtual storage pools: 2 (1 per controller module) •Maximum virtual pool size: 1.1 PB •Maximum number of logical volumes: 1024 •Maximum logical volume size: 140 TB •Maximum number of drives in a drive group: 16 •Maximum number of drive groups: 32 •Maximum global spares: 16 •Maximum number of initiators: 8192 (1024 per host port on the controller module) •Maximum number of initiators per host: 128 •Maximum number of host groups: 32 •Maximum number of hosts in a host group: 256 •Maximum SSD read cache size: 4 TB •Maximum number of snapshots: 1024 (requires an optional license) •Maximum number of replication peers: 1 (requires an optional license) •Maximum number of replication volumes: 32 (requires an optional license)
Cooling Redundant cooling with two fans built into power and cooling modules (PCMs).
Power supply Two redundant hot-swap 580 W AC power supplies built into PCMs.
Hot-swap parts Controller modules, expansion modules, SFP/SFP+ transceivers, drives, PCMs.
Management interfaces 1 GbE port (UTP, RJ-45) and serial port (Mini-USB) on the controller modules. Web-based interface (WBI); Telnet, SSH, or Direct Connect USB CLI; SNMP and email notifications; optional Lenovo XClarity.
Warranty Three-year customer-replaceable unit and onsite limited warranty with 9x5 next business day response. Optional warranty service upgrades are available through Lenovo: Technician Installed Parts, 24x7 coverage, 2-hour or 4-hour response time, 6-hour or 24-hour committed repair, 1-year or 2-year warranty extensions, YourDrive YourData, installation services.
Dimensions Height: 88 mm (3.5 in.); width: 443 mm (17.4 in.); depth: 630 mm (24.8 in.)
Weight •SFF controller enclosure (fully configured): 30 kg (66 lb) •SFF expansion enclosure (fully configured): 25 kg (55 lb) •LFF controller enclosure (fully configured): 32 kg (71 lb) •LFF expansion enclosure (fully configured): 28 kg (62 lb)