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IBM V7000 SUBSYSTEM DEVICE DRIVER

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From the AIX command prompt, enter diag and press Enter. For RSSM devices, enter the following command: In the following example, the output shows that one HBA is installed: Converting a volume group SDD provides the following conversion scripts: To export the specified volume group on node 1, enter: Syntax pcmpath query portstats target port number Parameters target port number Use the target port number option to display information about the target port.

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Before you can import the specified volume groups, you must complete the following tasks: Verifying the hardware and software requirements You must install the following hardware and software components f7000 ensure that SDDPCM installs and operates successfully. It also aims at simplifying compatibility requirements in strongly heterogeneous server and storage landscapes.

For example, to create the group c 64 file, enter: If you select Yes, the process stops at this point and previews what you are removing.

Connection The physical location code of supported storage device adapter through which the LUN is accessed. PD The path is down. This is known as a partitioned cluster, or split brain syndrome. The terms used in the output are defined as follows: GC GC About this guide xiii.

Path Name The name of the path. In the following example, the output shows that three devices are attached to the SCSI path: An Install Analysis panel is displayed, showing the status of Ready.

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The driver address can be different in dfvice environment. Sddpcm is a loadable path control module designed to support the multipath configuration environment in the ibm totalstorage enterprise storage server, the ibm system storage san volume controller, the ibm storwize family, the ibm flash system v and v, the ibm totalstorage ds family and ibm.

IBM SAN Volume Controller

Command syntax conventions This section describes the notational conventions that this book uses. The Software to Install panel is displayed. If none of the device s algorithm is set to lbp, there is no change in the port statistical output.

The health check does not recover paths that are failed by the Distributed Error Detection algorithm. Use the vp2hd script to convert volume groups from volume groups containing SDD vpath devices to volume groups containing cxtxdx devices.

IBM Subsystem Device Driver for Linux – United States

There was no faster storage subsystem benchmarked by the SPC at that time October This support requires definition of the shared volume groups as Enhanced Concurrent Mode volume groups, in either concurrent or nonconcurrent resource groups. Syntax pcmpath configuration save If you enter pcmpath configuration save for hdisk1 with the following attributes: All advanced functions are therefore implemented in the virtualization layer, which allows switching storage array vendors without impact.

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If all retries fail on the preferred controller’s paths, paths on the alternate controller will be selected for retry. Attempt to read registration keys Because SDD or earlier does not have the volume group conversion scripts hd2vp and vp2hd, the uninstallation will not convert the existing volume groups back to cxtxdx devices.

Press Enter to select all the fibre-channel adapters to which you want to download firmware. Press Enter to begin the removal process. If there were a lot of inaccessible devices as the result of fabric reconfiguration, you should attempt to clean up the configuration before upgrading.

Issue the cfgvpath command to reconfigure the SDD vpath device by entering: A special interaction between HACMP and LVM ensures that if the volume group is used in a nonconcurrent dveice group, applications are allowed to access it on one node at a time. Earlier models featured external battery-backed power supplies.

Remember to select the SAN device that is Chapter 4. For the supported storage devices: The supported reserve policies are: