mugurstef
1 Nickel

Re: High latencies since we've activated FAST II

Hi, Any response to Flare upgrade? I'm in the same situation. Thank you,

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danLE
1 Nickel

Re: High latencies since we've activated FAST II

status so far:

- backup and auto tiering does (and did) not run at the same time

- FLARE has been upgraded last Thuesday to patch level 522

- that brought us only very small improvements since problems seem to be caused by high load on mirrored volumes

- high latencies are observed not in the timeframe where relocation runs

Are there any Mirror View issues know we have to be aware of?

We started moving to a pool concept within one array. That brought us to the situation where we needed to extend the pools with disks which have been freed by migration their LUNs to the pools etc. Without a relocation or restriping process were are stuck in some LUNs located only on the very small number of fresh disks added to the pool shortly before the LUN has been migrated to the pool...

In our opinion the only way would bee to migrate all data off the array and to build pools with their final capacities and then move back all data to the array. Does anyone would like to share his thoughts on that problem?

Best regards,

daniel

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SteveZhou
2 Iron

Re: High latencies since we've activated FAST II

There is a known perf issue for MV/S with FAST CACHE enabled. You may take a look at emc266584.

-Steve

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danLE
1 Nickel

Re: High latencies since we've activated FAST II

We do not have FAST Cache enabled. How can I access emc266584?

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mugurstef
1 Nickel

Re: High latencies since we've activated FAST II

Search "emc266584" on "Search Support" on Powerlink.

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