Thanks Ty and Rod. Good to hear RFS works well - perhaps the lack of google
hits is because it Just Works (tm).
-Original Message-
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Ty Haller
Sent: Friday, October 11, 2013 8:28 AM
To: U2 Users List
Subject: Re: [U2] UD hot backup/RFS options
We've been using RFS with Replication for years. Our entire DB is setup with
RFS and is replicated, about 300GB. (AIX 7.1 UniData 7.2.13)
The RFS Logs are on a separate set of RAID 10 Disks, and doesn't seem to add
that much overhead although we are utilizing SSDs now. GUIDE Runs pretty fast
1hr.
We run a triple mirror setup and split off the mirror nightly to backup. Any
crashes (rare), RFS has been able to recover from.
If needed we could run off of our DR System or copy the data back again (couple
of hours).
Ty Haller
SEFCU
Lead Administrator - System Services
thal...@sefcu.com
-Original Message-
From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-
boun...@listserver.u2ug.org] On Behalf Of Baakkonen, Rodney A (Rod)
46K
Sent: Friday, October 11, 2013 11:19 AM
To: U2 Users List
Subject: Re: [U2] UD hot backup/RFS options
We have used it for about 15 years. I can remember the last time we
crashed (Solaris). IF the redo logs look ok and the Unidata logs
don't have issues, I don't run guide on our RFS files. We only have
our largest files defined as RFS (10 gigabytes to almost 100
gigabytes). We did not put in the begin/end transaction statements in
our code. So RFS uses a timing mechanism to figure out when to write data out.
There is a performance difference, as you are doing extra i/o for each
RFS read. But we can usually fully recover our site in a couple of
hours. We are on Unidata 7.1 and hope to move to Unidata 7.2.13 soon.
-Original Message-
From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-
boun...@listserver.u2ug.org] On Behalf Of McGowan, Ian
Sent: Friday, October 11, 2013 9:33 AM
To: U2 Users List
Subject: [U2] UD hot backup/RFS options
We had a server crash 4pm yesterday (very unusual for IBM RS6000) and
after guide/fixfile we had so much data corruption that a restore from
previous days backup was needed.
The question for the list is if anyone is successfully doing RFS or
other incremental type backups? A quick google search shows a lot of
people asking questions, but not a lot of it works great success
stories. Looking to get a sense of real world usage before heading
down that road, and potentially paying for consulting to implement.
Any input, opinions, advice appreciated!
Ian
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