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Re: [Networker] Disaster Recovery testing
2006-05-09 14:25:29
On May 9, 2006, at 11:13 AM — 5/9/06, Patricia Neal wrote:
I will be attempting to do a successful disaster recovery test for
the 3rd time this July. So far, I've yet to come back satisfied
with the results. I run 7.2 on a windows 2000 server, and will try
to recover 3 linux boxes running AS 2.1 with Oracle overlayed on
them. Our Oracle DB won't allow for me to use the Oracle module
that Networker offers, so I backup the whole box and the RMAN data.
Then he gets stuff up and running thru RMAN itself. The RMAN data
consists of about 500 GB. The previous 2 tests were VERY SLUGGISH
plus I ran into reading in the wrong block size on the drives they
provided for me. We have a MSL5000 tape library at home using
160/320 tapes. Does anyone have specific procedures besides what's
in the Administrator's Guide of course that seems to work for you.
I was given some procedures to follow at the last Sungard test
center that consisted of
1. Install Networker
2.In Networker GUI create a single tape device
3. run inquire to get scsidev address of tape drive or jukebox
4. run sjirdtag x.x.x (where x.x.x is the scsidev address from step 3
5. Run sjimm slot <slot#> drive 1
6. when sjimm has completed run mmrecov
7. the tape drive to be used will be \\.\tape0.
8. enter the ssid and starting file and record numbers when prompted.
9.when the recover completes shutdown the Networker Services
10. in c:\program files\legato\nsr rename the res dir to res.old
11. rename the res.R directory to res
12. remove all of the files from the nst/tmp, but leave the sec
subdirectory
13. restart networker
14. reconfigure jukebox and start doing client indexes and then
restores can be done.
It all sounds so easy, except with the last test, legato said that
I ran into every possible problem going. They were blaming alot on
networking. We had everything set to 100/full and I believe the
hardware was all up to date.
Is the driver for each network card current? Also, on that Windows
server, you may benefit by installing a network card that has the TCP/
IP stack built-in. You may also need to adjust some environment
variables and tcp/ip settings, but it depends on your environment.
What I suggest you do is log onto Legato's web site and download the
performance tuning guide. In that guide, there are some tips on how
to test backup performance. The same ideas apply to recovery
performance. For example, one simple test for network throughput is
to log onto one of the NetWorker clients that you want to test and
FTP a 1GB file to your NetWorker server and see how long that file
takes to transfer, then do the process in the reverse direction.
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