Oracle-L: Re[2]: Oracle and NAS (more Q's)

From: Robert Eskridge <bryny_at_dfweahs.net>
Date: Tue, 16 Jul 2002 05:58:21 -0800
Message-ID: <F001.00498FF4.20020716055821@fatcity.com>

We wrote our own scripts to manage consistency. They manage the following levels of backup:

Snapshots of datafiles at the primary location.
Standby database at the secondary location.
Tape backup of datafiles at the primary location.
Tape backup of datafiles at the standby location.

BL> How do you do backups?

BL> Do you use RMAN with MML? Do you use NDMP?

BL> Tia.

>>>> bryny_at_dfweahs.net 07/16/02 08:28a.m. >>>
BL> Dick,

BL> We're using Netapp F720's to store all our datafiles (production and
BL> test) in a small/medium OLTP environment and are quite happy with the
BL> setup. YMMV.

BL> We run out of two sets of collocated servers. At each collocation
BL> there are at least two filers and at least two servers. The filers and
BL> the servers currently have three 100BaseT network connections. One
BL> front channel and two back channels. Each LAN segment is switched.
BL> Thus any server at a location can connect to any filer at that

BL> location. Datafiles can be spread across filers or spread across BL> channels as performance requires.

BL> The WAFL does indeed write to the nearest available inode and relinks
BL> the inode map.  The unlinked inode is immediately available for
BL> rewrite unless it is a member of a snapshot.  Thus while reserving
BL> unlinked blocks is inefficient from a storage perspective, it is a
BL> factor you get to control by controlling the snapshots.

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Author: Robert Eskridge
  INET: bryny_at_dfweahs.net

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Received on Tue Jul 16 2002 - 08:58:21 CDT