Possibly, because on HP, two discs that are not part of an array can be a
mirrored pair, whereas RAID implies an array.

The most powerful example of a mirrored pair that is not in the same array
is MPE mirroring to a different system.

-dtd

> -----Original Message-----
> From: Mark Landin [mailto:[log in to unmask]]
> Sent: Monday, December 04, 2000 9:46 AM
> To: [log in to unmask]
> Subject: Re: Mirrored Disk vs. Raid
>
>
> On Sat, 2 Dec 2000 20:30:27 -0600 (Central Standard Time), Stan Sieler
> <[log in to unmask]> wrote:
>
> >You can buy some SCSI and IDE controllers whose only purpose in life
> >is to look like a single drive to Windows, but actually have
> two identical
> >disks connected, mirroring to the second drive.
> >
> >That's why I mentioned that I didn't know if anyone had such non-RAID
> >mirroring hardware for the 3000.  BTW, that's not RAID, just like
> >sticking 4 disks on an IDE controller also isn't RAID.
> >
>
> If I have two disks, one of which is a real-time mirror of the other,
> how does that not fit the definition of RAID level 1?
>