https://community.hpe.com/t5/hpe-eva-storage/is-hp-dsm-built-by-their-own-or-on-top-of-ms-mpio/m-p/5305589#M60699 <P>Is HP DSM built by their own or on top of MS MPIO?</P><P>&nbsp;</P><P>We experienced an error on cluster/MPIO "All paths have failed. \Device\MPIODisk2 will be removed.". I google and find someone encountered the same error but I am runnig HP DSM(MPIO).</P><P>Windows 2008 R2 bug?</P><P>Should I update MPIO to 6.1.7601.17619? Is HP DSM built by their own or on top of MS MPIO(see to be the latter, right)?</P><P><A target="_blank" href="http://social.technet.microsoft.com/Forums/en-US/winserverClustering/thread/9e9ca06d-5d1b-43d4-890d-4f9fa41f58d7/">http://social.technet.microsoft.com/Forums/en-US/winserverClustering/thread/9e9ca06d-5d1b-43d4-890d-4f9fa41f58d7/</A></P><P>*<STRONG>Windows Server 2008 x64 SP2 SAN disks falls off</STRONG>*</P><P><A target="_blank" href="http://support.microsoft.com/kb/2522766">http://support.microsoft.com/kb/2522766</A></P><P>*<STRONG>The MPIO driver fails over all paths incorrectly when a transient single failure occurs in Windows Server 2008 or in Windows Server 2008 R2</STRONG>*</P> Fri, 19 Aug 2011 09:06:22 GMT Dennis-Lee 2011-08-19T09:06:22Z https://community.hpe.com/t5/hpe-eva-storage/is-hp-dsm-built-by-their-own-or-on-top-of-ms-mpio/m-p/5305589#M60699 <P>Is HP DSM built by their own or on top of MS MPIO?</P><P>&nbsp;</P><P>We experienced an error on cluster/MPIO "All paths have failed. \Device\MPIODisk2 will be removed.". I google and find someone encountered the same error but I am runnig HP DSM(MPIO).</P><P>Windows 2008 R2 bug?</P><P>Should I update MPIO to 6.1.7601.17619? Is HP DSM built by their own or on top of MS MPIO(see to be the latter, right)?</P><P><A target="_blank" href="http://social.technet.microsoft.com/Forums/en-US/winserverClustering/thread/9e9ca06d-5d1b-43d4-890d-4f9fa41f58d7/">http://social.technet.microsoft.com/Forums/en-US/winserverClustering/thread/9e9ca06d-5d1b-43d4-890d-4f9fa41f58d7/</A></P><P>*<STRONG>Windows Server 2008 x64 SP2 SAN disks falls off</STRONG>*</P><P><A target="_blank" href="http://support.microsoft.com/kb/2522766">http://support.microsoft.com/kb/2522766</A></P><P>*<STRONG>The MPIO driver fails over all paths incorrectly when a transient single failure occurs in Windows Server 2008 or in Windows Server 2008 R2</STRONG>*</P> Fri, 19 Aug 2011 09:06:22 GMT https://community.hpe.com/t5/hpe-eva-storage/is-hp-dsm-built-by-their-own-or-on-top-of-ms-mpio/m-p/5305589#M60699 Dennis-Lee 2011-08-19T09:06:22Z https://community.hpe.com/t5/hpe-eva-storage/is-hp-dsm-built-by-their-own-or-on-top-of-ms-mpio/m-p/5317017#M60745 <P>DSM = Device Specific Module.&nbsp; Think device driver for MPIO, they work together, DSM is no use without MPIO and vice versa.</P> Tue, 30 Aug 2011 15:30:22 GMT https://community.hpe.com/t5/hpe-eva-storage/is-hp-dsm-built-by-their-own-or-on-top-of-ms-mpio/m-p/5317017#M60745 Greybeard 2011-08-30T15:30:22Z