Ideally, you're using mirroring because you want some sort of fault
tolerance...
so, yes, your disks should be on separate controllers. After all , if the
controller was handling both disks and it failed, you'd have a dead system,
so what was the point of mirroring?
Performance.. depends on the RAID controller you're using... on a good 'un,
you should get an improvement in concurrent reads, as both disks can
alternate to supply your request.
Writes have to be to both disks before the write is deemed successful. So
there is a performace hit there.
Chances are you'll notice neither write-hit nor read-gain unless you've got
an underspecified system
Bill
> -----Original Message-----
> From: John Kennedy [mailto:[EMAIL PROTECTED]]
> Sent: 13 February 2001 14:26
> To: [EMAIL PROTECTED]
> Subject: RAID1,Both IDE Hard Drives be on same Controller?
>
>
> Good morning all,
>
> I am building a web server using RAID-1, and I am
> concerned about where I should place my 20 gig IDE
> hard drives.
>
> Can they be on the same IDE controller?
>
> Or should they each be on different controllers?
>
> Will I take a performance hit one way or the other?
>
> Many thanks in advance for the input.
>
> Johnn
>
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