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Dynamic Multi-Pathing and Dynamic Multi-Pathing for VMware

Veritas Dynamic Multi-Pathing and Dynamic Multi-Pathing for VMware improves storage I/O performance and availability across physical and virtual heterogeneous server and storage platforms using intelligent algorithms and load balancing.

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How to migrate from Storage Foundation DMP to EMC Power Path DMP?
mactep Partner
“Hello,   Could anyone please advise what is a proper way to migrate from existing Storage Foundation (for Windows) DMP support - to EMC PowerPath DMP? I haven't seen any decent Tech Notes, White papers or other articles for this. There is also Veritas Cluster Server and VVR...”
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Updated: 19 May 2013 by mactep | Last comment: 19 May 2013 by mactep
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DMP, MPIO, MSDSM, SCSI-3 and ALUA configuration settings
scogeb
“Ok, I'm somewhat confused and the more I read the more confused I think I'm getting. I'm going to be setting up a 4 node active/active cluster for SQL.  All of the nodes will have 2 seperate fiber channel HBAs connecting through 2 seperate switches to our NetApp.  The NetApp...”
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Updated: 18 Dec 2012 by scogeb | Last comment: 04 Dec 2012 by Wally_Heim
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DMP DSM for VCS SQL, Round Robin vs. Dynamic Least Queue Depth
scogeb
“What is the recommended setting for the Load Balance Policy for a SQL environment?  Or, where can I find more information about the available settings?  Thanks! ...”
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Updated: 16 Oct 2012 by scogeb | Last comment: 16 Oct 2012 by scogeb
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Why does 1 subpath in multipathing use slice 2 and not the other??
manmountain Certified
“  Wondering why disk 2 show slice 2 whereas the other subpaths show only disk?  Does this mean that this disk has been formatted/labeled differently? They all should be labeled EFI.    [2250]$ vxdisk path SUBPATH                  ...”
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Updated: 04 Sep 2012 by manmountain | Last comment: 04 Sep 2012 by TonyGriffiths
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IBM DS3524 - RDAC and Vxvm DMP
enzo68
“HI, OS RHEL 5.5 - Veritas Storage Foundation 5.1 SP1 RP2 (VCS) .The big quetion is about the two dmp.Can they coexist together or there are some issue on path failover?   Best Regard Vincent ...”
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Created: 11 Jul 2012 by enzo68 | Last comment: 12 Jul 2012 by mikebounds
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SFHACFS vs Hitachi-VSP & Host mode option 22
Matej Susta
“Hi!   I'm installing several new SFHACFS clusters and during the failover testing I run into annoying problem - when I fence one node of the cluster, DMP logs high number of path down/path up events which in the end causes the disk to disconnect even on other active nodes. We've found...”
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Updated: 02 Oct 2012 by Matej Susta | Last comment: 25 Jun 2012 by Gaurav Sangamnerkar
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SF4.1 VxDMP disables dmpnode on single path failure
ursi
“This is more like an informational question, since I do not assume anyone has a solution, but just in case I would be thankfull for some enlightment: I am forced to use an old Version SF4.1MP4 in this case on Linux SLES9. For whatever reason DMP does not work with the JBOD I have added. The JBOD...”
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Updated: 14 Jun 2012 by ursi | Last comment: 13 Jun 2012 by ursi
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SF5.1 VxDMP caches LUN size?
ursi
“I recently recrated a LUN with a different size but the same LUN ID  (Linux SLES11) and when trying to initialize it as a new disk to VxVM I keeps sticking to the old size, whatever I do (I tried to destroy and reinitialize in different formats and grow many times): # vxdisk list...”
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Updated: 12 Jun 2012 by ursi | Last comment: 12 Jun 2012 by ursi
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A known issue (system hang or panic) in DMP 5.1 SP1
snowsky
“Hi experts, In the section of Known Issues, I found "A system can hang or panic in a SAN boot environment due to udev device removal after loss of connectivity to some paths on RedHat Linux6(RHEL6)(2219626)". How could I know it's the exact same situation while the similiar thing...”
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Updated: 04 Apr 2012 by snowsky | Last comment: 04 Apr 2012 by Mark Alleyne
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DMP devices displayed at the format
MauroVicini Partner Accredited
“Hi all, just to understand the way DMP manages devices. We want to use DMP devices inside zpools. So I enabled the dmp_native_support and disabled the MPxIO. Everything seems to work the right way. However in the format (solaris 10) I see dmp devices with strange names:        ...”
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Updated: 09 Apr 2012 by MauroVicini | Last comment: 27 Feb 2012 by MauroVicini
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