Posted September 11, Faster thruput with the DS in particular. Multipathing is a technology used to inform the host server that in fact there are multiple physical connections to the same logical drive on a storage system. Please see our cookie policy for details. Easier just to do it from the console. For this implementation I have decided to use the multipath tools provided by IBM.

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For more than 2 hosts in pool, you need a fiber switch. The secondary never became active.

Leave a Reply Cancel reply Your email address will not be published. Check that a soft link exists to the newly installed kernel source files and if not created one: Post as a guest Name. I will be thankful if anybody tell me about the possible causes.

If yes, you cannot use RDAC module. This will provide redundancy in the event of a fibre channel switch failure, HBA failure or the loss of one of your fibre connections. Become a Partner Provide your customers with award-winning solutions.

Fibre Channel Multipathing using SLES 10 SP1 w/XEN and IBM Storage Systems

Only two serwers in pool plus ds As for using proprietary RDAC drivers over the standard ones. If you have 2 controllers and 2 ports per controller, that means you can only have 2 XenServers in pool with direct connect to SAN.


Please sign in to comment You will be able to leave a comment after signing in Sign In Now. Upvote if you found this answer helpful or interesting. Each of these ports is connected to a separate Fibre Channel Switch in the chassis. January 8, at 5: Ensure you create the new entry correctly including updating the title name and modifying the initial ram disk file name including the.

– Multipath configuration help with IBM SAN (DS) – Ask Ubuntu

For the XenServers, each host must have a connection to each controller. The disadvantage is that you must ensure these 3rd party tools and drivers are compatible with any updates dw3400 to the SLES 10 operating system always test new updates on one host server first. Follow, to receive updates on this topic.

Posted September 10, If it possible to configure this multipath on this configuration, or i should reinstall server to oldest version?? Next type the following commands to ensure the kernel version is synchronised between the device driver and the running kernel: No such file or directory.


You can check by: Share with friends and colleagues on social media. Below the text in bold are commands you need to type into the server console followed by Enter.

July 2, at 2: Posted August 11, ib, See the XenCenter logs for the full details.

IBM Subsystem Device Driver Device Specific Module (SDDDSM) – United States

Attached scsi dd3400 sg2 type 0 The error messages went away but mutlipath -ll shows that RDAC is used. J K on Jul Upvote if you also have this question or find it interesting. If I press skip everything runs well and disks are mounted except one LVM drive … maybe other question.