IBM Flex System V7000 Expansion Enclosure 4939H29 Manuel D’Utilisation

Draft Document for Review January 29, 2013 12:52 pm

IBM Flex System V7000 Storage Node Introduction and Implementation Guide

Reliability, availability, and serviceability (RAS) are important concepts in the design of the 
IBM Flex System V7000 Storage Node. Hardware features, software features, design 
considerations, and operational guidelines all contribute to make the IBM Flex System V7000 
Storage Node reliable.

Fault tolerance and high levels of availability are achieved by:

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The RAID capabilities of the underlying disk subsystems

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IBM Flex System Flex System V7000 nodes clustering using a 

architecture

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Auto-restart of hung nodes

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Battery units to provide memory protection in the event of a site power failure

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Host system failover capabilities

High levels of serviceability are achieved by providing:

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Cluster error logging

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Asynchronous error notification

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Dump capabilities to capture software detected failures

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Concurrent diagnostic procedures

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Directed maintenance procedures

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Concurrent log analysis and memory dump data recovery tools

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Concurrent maintenance of all IBM Flex System V7000 components

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Concurrent upgrade of IBM Flex System V7000 Software and microcode

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Concurrent addition or deletion of the IBM Flex System V7000 nodes canister in a cluster

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Software recovery through a service panel push button

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Automatic software version correction when replacing a node

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Detailed status and error conditions displayed on the service panel

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Error and event notification through SNMP, syslog, and email

At the heart of the IBM Flex System V7000 Storage Node is a pair of node canisters. These 
two canisters share the data transmitting and receiving load between the attached hosts and 
the disk arrays. This section looks at the RAS features of the IBM Flex System V7000 Storage 
Node system monitoring, and troubleshooting.

This documentation helps you determine the system state using the LED indicators on the 
enclosure

The IBM Flex System V7000 Storage Node control enclosure is installed in the IBM Flex 
System Enterprise Chassis and the machine type and model (MTM) is as followes:

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Machine type and model (MTM) for the control enclosure is 4939-A49, 4939-H49, or 
4939-X49.  

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Machine type and model (MTM) for the expansion enclosure is 4939-A29, 4939-H29, or 
4939-X29.

It contains two node canisters and up to 24 2.5-inch drives. Both spinning hard disk drives 
(HDD) and solid state drives (SSD) are supported.