Chapter 1. Storwize V7000 Hardware Components; Storwize V7000 Components In The Front Of The Enclosure; Drives - IBM Storwize V7000 Troubleshooting And Maintenance Manual

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Chapter 1. Storwize V7000 hardware components

A Storwize V7000 system consists of one or more machine type 2076 rack-mounted enclosures.

There are four model types. The main differences among the model types are the following items:

v The number of drives that an enclosure can hold. Drives are located on the front of the enclosure. An

enclosure can hold up to 12 3.5-inch drives or up to 24 2.5-inch drives.

v Whether the model is a control enclosure or an expansion enclosure.

Control enclosures contain the main processing units that control the whole system. They are where

external systems, such as host application servers, other storage systems, and management

workstations are connected through the Ethernet ports or Fibre Channel ports. Control enclosures can

also be connected to expansion enclosures through the serial-attached SCSI (SAS) ports.

Expansion enclosures contain additional storage capacity. Expansion enclosures connect either to

control enclosures or to other expansion enclosures through the SAS ports.

There are two control enclosure models.

v Machine type and model 2076-112, which can hold up to 12 3.5-inch drives

v Machine type and model 2076-124, which can hold up to 24 2.5-inch drives

There are two expansion enclosure models.

v Machine type and model 2076-212, which can hold up to 12 3.5-inch drives

v Machine type and model 2076-224, which can hold up to 24 2.5-inch drives

The machine type and model (MTM) are shown on these labels that are located on the front and the rear

of each enclosure:

v The left end cap on the front of the enclosure. The label also indicates if the enclosure is a control

enclosure or an expansion enclosure.

v The rear of the left enclosure flange.

Note: The labels also show the enclosure serial number. You must know the serial number when you

contact IBM support.

Because of the differences between the enclosures, you must be able to distinguish between the control

enclosures and the expansion enclosures when you service the system. Be aware of the following

differences:

v The model type that is shown on the labels.

v The model description that is shown on the left end cap.

v The number of ports at the rear of the enclosure. Control enclosures have Ethernet ports, Fibre Channel

ports, and USB ports. Expansion enclosures do not have any of these ports.

v The number of LEDs on the power supplies. Control enclosure power supplies have six; expansion

enclosure power supplies have four.

This topic describes the components in the front of the enclosure.

An enclosure can hold up to 12 3.5-inch drives or up to 24 2.5-inch drives.

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