Re: RAID on Hotspots....

"Gerry Sinkiewicz" <sinkiege_at_snet.net> wrote in message news:<zXU9d.6845$Le3.896_at_newssvr16.news.prodigy.com>...
> "rich" <oracle_man_at_yahoo.com> wrote in message
> news:56f4f26c.0410061218.7577d9d_at_posting.google.com...
> > All,
> >
> > It seams that in the Oracle on Linux shop i/o doesn't follow
> > tradition. It used to be that you always separated things physicaly
> > on different controllers, different disk, etc... Today it's just one
> > big RAID array and everything goes on it. How many of you have 10 EMC
> > arrays? I'll bet not many, if any. How are you separating data from
> > index, redo logs from arhived redo logs, temp from undo?
> >
> > Please send your solutions to rheadrick_at_tickleinc.com
> >
> > Thanks,
> >
> > Rich
> >
>
> Our EMC guys have set up different RAID configurations for redo and archive
> logs (RAID10), while
> the rest of the data and backup areas are in RAID 5 and I forgot the correct
> term, but it might be
> disk groups or storage groups. So they have the SAN partitioned so that the
> redo and archive logs which require
> better write performance are both mirrored and stripped (I think the
> striping is at least 7 disks deep).
> Each of our two towers at this point contains about 8GB of cache.
> The towers are filling fast too, so I would expect another 6 -12 months and
> they will be full of
> disks.

The EMC terminology for a disk group is called "Meta Volume." A Meta Volumne is usually comprised of several "Splits", a split is a physical partition off a spindle (disk).

Louis Frolio Received on Mon Oct 11 2004 - 16:58:25 CDT