THANKS Kevin,
Yeah, I read those papers but I wanted a real life "testimonial" like you
gave to make sure there wasn't any WAFL waffling.
Steve
-----Original Message-----
Sent: Wednesday, July 11, 2001 10:36 AM
To: Multiple recipients of list ORACLE-L
Steve;
We use netapp filers at our current location. I really like them myself.
>From a backup point of view, we only take our databases down for about 5
minutes each night and still get a full cold backup.
On the netapp you just stop the DB, make a new snapshot, and then restart
the DB. At this point, you can backup the snapshot and logs. This is
truely a full copy of the database. If anything happens, and it has in the
past, you restore from the snapshot, apply the logs, and you are back.
I can not give you direct performance numbers. But, so far, our 37
instances are running find from an IO point of view. We do not see any IO
performance hits out of the ordinary.
Their WAFL technology does appear to work well with the database.
Have you had a chance to read thru their TECHNICAL LIBRARY online ??
http://www.netapp.com/tech_library/index_db.html#O
This brings you to their papers on Oracle.
Kevin
-----Original Message-----
Sent: Wednesday, July 11, 2001 10:36 AM
To: Multiple recipients of list ORACLE-L
Hi Gaja (AKA "oraperfman"),
Why search google when I can just ask you? :-)
We had some NetApp sales drones here last week and they made tremendous
claims about their performance with Oracle. The sales engineer claims to
have been an Oracle DBA for a few years and he made a compelling case but I
haven't been able to get any performance feedback from current DBA's with
NetApp filers in production. Do you have anything you can share as regards
Oracle I/O performance on NetApp Filers which are a RAID4 implementation?
BTW, got your book... great job!! You make mention of NetApp and RAID4 in
your book. You say RAID4 is like RAID3 (except it's block level parity) so I
assume it performs like RAID3 which you state is better for DSS but not as
good for OLTP. NetApp claims to have overcome RAID4 performance issues with
their wafl architecture. Any feedback on this?
Waiting for your next book,
Steve Orr
-----Original Message-----
Sent: Wednesday, July 11, 2001 7:22 AM
To: Multiple recipients of list ORACLE-L
Peter & list,
NFS 2.0 and up is TCP-based and hence has the required
reliability to support "acks and error checking" of
network I/O calls. Having said that the only vendor
that I am aware of where NFS-mounted filesystems is
"certified by Oracle" for an Oracle database is
Network Appliance. In the case of NetApp. because it
is a NAS (Network Attached Storage) device and the
filesystem is maintained and supported on the Filer
rather than on the "host". In a very simplistic sense,
the host has a pointer to the NAS device on which the
filesystem is maintained. For more information on NAS
or anything else I urge you to search on
www.google.com.
And yes, you can hookup the NetApp. Filer to a Sun
Solaris box for sure. Don't know about Linux, but you
can check NetApp's website to verify that.
Cheers,
Gaja
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