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тАО11-10-2009 08:36 AM
тАО11-10-2009 08:36 AM
Eva 4400 (XCS 09522000). DR group issues
What appears to happen is that after periods of high I/O involving any DR groups, the 2 x Sync DRGs attached to a file server cause the server to hang and all clients attemtpting to connect to shares fail to connect or the client desktop OS will hang. The workaround in each case has been to suspend and re-enable the Sync DRGs or to disable and reenable the FC switch ports that replication traffic taraverses. Behaviour returns to normal at that point. Xcs on the 4400 is 09522000.
I have opended a new HP case but wondering whether anyone else has experienced similar behaviour.
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тАО11-11-2009 01:36 PM
тАО11-11-2009 01:36 PM
Re: Eva 4400 (XCS 09522000). DR group issues
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тАО11-11-2009 02:46 PM
тАО11-11-2009 02:46 PM
Re: Eva 4400 (XCS 09522000). DR group issues
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тАО11-12-2009 07:55 AM
тАО11-12-2009 07:55 AM
Re: Eva 4400 (XCS 09522000). DR group issues
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тАО11-12-2009 08:12 AM
тАО11-12-2009 08:12 AM
Re: Eva 4400 (XCS 09522000). DR group issues
HP have been thru the CELs, FC switch logs, MPX110 logs and config and a substantial capture from the primary cluster node. No joy. We are now running a 12 hour evaperf capture starting tomorrow a.m. Unlikely though that we will be lucky enough to capture the "event".
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тАО11-16-2009 08:48 AM
тАО11-16-2009 08:48 AM
Re: Eva 4400 (XCS 09522000). DR group issues
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тАО11-16-2009 09:13 AM
тАО11-16-2009 09:13 AM
Re: Eva 4400 (XCS 09522000). DR group issues
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тАО11-28-2009 01:12 PM
тАО11-28-2009 01:12 PM
Re: Eva 4400 (XCS 09522000). DR group issues
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тАО12-01-2009 03:07 AM
тАО12-01-2009 03:07 AM
Re: Eva 4400 (XCS 09522000). DR group issues
Well.. you were right. I am sure you were thinking that the FW upgrade to the Mpx110s was an unlikely resolution. We had a major reoccurrence yesterday. I am interested in the detail behind the host port blocking issue. For us it is a random (apparently) issue. Is the randomness generated by the movement of vDisks in normal conditions between controllers/ports and replication being more statically assigned to controllers/ports? i.e. vDisks and replication traffic randomly end up being managed by the same controllers/ports and hence we get the performance degradation? It can be weeks between these events and the arrays are used quite intensively.