Dell PowerVault DX6112 사용자 설명서 - 페이지 31

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Disaster Recovery

You can recover the Dell DX Cluster Services Node from a number of hardware or software failures using the Recovery

Manager (RM).

NOTE: Contact Dell Support if you need assistance on disaster recovery for the DX Cluster File Server. For more

information, see

Contacting

Recovery Solution Map

The following guidelines apply:

•

Reinstallation of the operating system requires you to reinstall all the applications on the system.

•

Reinstalling the operating system on the CSN does not cause data loss on the storage networks. Data on the

storage networks is accessible to the client(s) through the private network as long as they are not restarted

while the DX Cluster Services Node is being re-built.

•

Ensure that you have the manifest UUID before you recover the original cluster settings (stored in the cluster) if

either the operating system or DX software is re-installed on the CSN. While RM does this automatically, it is

recommended that you perform a manual recording of this information before you begin recovering the cluster

settings. If you do not have access to the manifest UUID, contact Dell technical support. For more information,

see

Contacting

Dell.

•

A non-recoverable failure of the disk group containing the operating system requires reinstallation of the

operating system and all applications.

•

For all non-disk related hardware failures, see the

manuals.

The main steps to upgrade the DX system software from version 1.0 to version 2.

Upgrading RHEL 5.3 to RHEL 5.5

Upgrading DX Software From Version 1.0 To Version 2.x

Recovering From Disk Failures

NOTE: The DX Cluster Services Node system's internal disk storage is preconfigured as RAID 5.

Single Disk Failure

The CSN is configured as RAID 5 to ensure uninterrupted operation of the system if a single disk fails. If a single disk

failure occurs, replace the failed hard drive. For more information, see

system at dell.com/support/manuals. After the hard drive is replaced, it is automatically assigned by the RAID controller

and rebuilt into the disk group. After the disk group is rebuilt, the RAID disk group continues to operate normally.

CAUTION: If a second drive fails before the disk group rebuild is complete, data loss occurs.

Dell.

Owner's Manual for the relevant system at dell.com/support/

x , are:

Hardware Owner's Manual for the affected