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EVA4400: FATA or FC for Oracle archived redo logs?

Michael Smith CA
Occasional Advisor

EVA4400: FATA or FC for Oracle archived redo logs?

Hi,

I'm not an Oracle expert but it seems the archived redo logs are probably copied every few minutes when the online redo log fills up. Since it's not continuously writing, I was thinking it might be a candidate for FATA drives with their 30% duty cycle.

We'd probably end up with one archive partition on FATA and a mirror on FC. Any thoughts?

This is Oracle 11g, RAC, 2 nodes, ASM, on Linux.
4 REPLIES
Rob Leadbeater
Honored Contributor

Re: EVA4400: FATA or FC for Oracle archived redo logs?

Hi,

I've no actual experience of this, but I would be wary of using FATA drives...

Cheers,

Rob
Víctor Cespón
Honored Contributor

Re: EVA4400: FATA or FC for Oracle archived redo logs?

If the writes are not constant and very ramdom, the FATA drives can do. You must have an estimate of the number of IOPS to know how many FATA drives you need.
Uwe Zessin
Honored Contributor

Re: EVA4400: FATA or FC for Oracle archived redo logs?

But flushing the redo logs is a pure sequential operation - isn't it?

FC drives and FATAl drives in one EVA? Just say NO!
.
Michael Smith CA
Occasional Advisor

Re: EVA4400: FATA or FC for Oracle archived redo logs?

Yes, it should be purely sequential. I think that's what FATA's good at, right?