Re: A little RAID experiment

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On Tue, May 1, 2012 at 12:46 PM, Stefan Ring <stefanrin@xxxxxxxxx> wrote:
>> Stefan, you should be able to simply clear the P410i configuration in
>> the BIOS, power down, then simply connect the 6 drive backplane cable to
>> the 410i, load the config from the disks, and go.  This allows head to
>> head RAID6 comparison between the P400 and P410i.  No doubt the 410i
>> will be quicker.  This procedure will tell you how much quicker.
>
> Unfortunately, the server is located at a hosting facility at the
> opposite end of town, and I'd spend an entire day just traveling to
> and fro, so that's not currently an option. I might get lucky though,
> because we should soon get another server with an external P410i.

The new storage blade has only been upgraded to the P410i controller,
and even though there is a new setting called "elevatorsort", which is
enabled, the performance is just as bad. The new one has a
flash-writeback cache and may be faster by a few percent ticks, but
that's it. It doesn't even make sense to compare the two in-depth, as
they perform almost identically.

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