SATA using more slow disks for FRA and archivelogs

1. I am looking for some advice on staging on a SAN storage for my oracle database. I currently have a San with all SAS 15 K drives and I'm looking to develop the San and add SATA 7.2 K disks store. I want to locate our FRA including our "disk to disk" backup oracle and our archive of these disks SATA 7.2 logs and I was wondering if any effect it would have on our production database?

2. also, I also plan to place an instance of development entirely on the 7.2 K drives and I was wondering what to expect for performance in this regard?

Thank you

Oracle cannot know the details ( t - it? ), but it can occupy.  If your slower disks cannot archive logs fast enough because, well, they are slower, and you have other things going on over there, in the worst case, it could stall your db.  I hope that you would have enough newspapers of recovery to avoid this, but if all goes by one controller, you can still have a problem.  And then, if your system is linked to the CPU, it can make no difference at all.  But if being cpu bound to the means available to it to wait for the processor to perform queries of e/s, it could.  Difficult to say without testing, huh?  in any case, with a San, number of batteries often makes more of a difference than the speed controller and the buffering, buffering, network problems, and so on all are potential bottlenecks or has.  And bottlenecks that make the difference.

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