Dell Unity™ All Flash and Unity Hybrid Hardware Information Guide

Hardware views

Shown here are examples of the front and rear of a Unity 300/300F/350F/380/380F, Unity 400/400F/450F, Unity 500/500F/550F, and Unity 600/600F/650F platform disk processor enclosure (DPE).

25-drive disk processor enclosure front

12-drive disk processor enclosure front (not available in Unity All Flash models)

Hardware features

Contained in a 2U architecture, the Unity™ All Flash and Unity Hybrid platform DPE fully loaded with hard disk drives and without I/O modules or DAEs weighs either:

• 12-drive DPE: 65 lb (29 kg)
  NOTE:12-drive DPE not available on the Unity All Flash models.
• 25-drive DPE: 44 lb (20 kg)

The 2U DPE measures:

• 12-drive DPE: 3.4 inches high x 17.5 inches wide x 27 inches deep (8.64 cm x 44.45 cm x 68.58 cm)
• 25-drive DPE: 3.4 inches high x 17.5 inches wide x 24.17 inches deep (8.64 cm x 44.45 cm x 61.39 cm)

Between the front and rear of the enclosure, a midplane distributes power and signals to all the enclosure components. On the front DPE, drives plug directly into the midplane connections. On the rear of the DPE, the storage processors, power supply modules, and I/O modules plug directly into the midplane connections. Internal to each storage processor are a battery backup unit (BBU), redundant cooling modules, DDR4 memory, and an E5 v3 Intel processor.

The following table describes the hardware limits for Unity Hybrid models.

The Unity™ All Flash and Unity Hybrid platform includes the following hardware features:

On the front of the 2U DPE:

• Unity Hybrid models support two types of drive carriers in the DPE with either:
  • 12 slots for 3.5-inch drives
  • 25 slots for 2.5-inch drives
• Unity All Flash models support only the DPE and drive carrier with 25 slots for 2.5-inch drives.
• Two enclosure LEDs; power on and fault.

On the rear of the 2U DPE are two storage processors. Each storage processor consists of:

• Two RJ-45 LAN connectors (labeled with a network management symbol and a wrench symbol) management ports
• Two 10GBASE-T ports
• Two embedded Converged Network Adapter (CNA) ports
• Two embedded x4 lane 12-Gb/s mini-HD SAS (encryption capable) back-end ports (labeled 0 and 1, respectively)
• One power supply module (hot-swappable)
• Two PCI Gen 3, x8 lane I/O module slots (A0 - A1 and B0 - B1) are available for use, supporting:
  • Four-port 12-Gb/s SAS I/O module -- where supported, provides four mini-HD SAS ports (x16 lane) of 12Gb SAS expansion for connecting additional DAEs. This I/O module also supports controller based encryption. Labeled 12Gb SAS v1.
  • Four-port 16-Gb/s Fibre Channel I/O module -- provides Fibre Channel connectivity as listed below. Labeled 16Gb Fibre v3.
    • Four ports auto-negotiating to 4/8/16Gbps. Uses optical SFP+ and OM2/OM3 cabling to connect directly to a host HBA or FC switch.
    • One FC port negotiating to 16Gbps, which can be configured for synchronous replication between two Unity systems, either directly connected or connected through a switch. Uses optical SFP+ and SM or MM cabling to provide synchronous replication. The three remaining ports auto-negotiate to 4/8/16 Gbps, and use optical SFP+ and OM2/OM3 cabling to connect directly to a HBA or FC switch.
  • Four-port 10-Gb/s optical I/O module -- provides four SFP+ optical or Active/Passive TwinAx 10GbE IP/iSCSI ports for connections to an Ethernet switch. Supports both IP(file) and iSCSI (Block) on the same I/O module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10 GbE v5.
  • Four-port 10GBASE-T I/O module -- provides four copper 10GBASE-T RJ45 Ethernet ports for copper connections to an Ethernet switch. Supports both IP (file) and iSCSI (Block) on the same IO module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10GbE BaseT v2.
  • Four-port 1GBASE-T I/O module -- provides four 1000BASE-T RJ-45 copper ports for Cat 5/6-cabling connections to an Ethernet switch. Supports both IP (file) and iSCSI (Block) on the same I/O module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 1 GbE BaseT v3.
  • Two-port 10Gb/s optical I/O module -- provides two SFP+ optical or Active/Passive TwinAx 10GbE ports for connections to an Ethernet switch. Supports both IP (file) and full iSCSI Offload engine (Block) on the same IO module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10 GbE V6.