Re: [U2] UD hot backup/RFS options

2013-10-11 Thread Ty Haller
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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Re: [U2] UD hot backup/RFS options

2013-10-11 Thread McGowan, Ian
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
 -
 IMPORTANT NOTICE:   This message is intended only for the addressee
 and may contain confidential, privileged information.  If you are not 
 the intended recipient, you may not use, copy or disclose any 
 information contained in the message.  If you have received this 
 message in error, please notify the sender by reply e-mail and delete the 
 message.
 ___
 U2-Users mailing list
 U2-Users@listserver.u2ug.org
 http://listserver.u2ug.org/mailman/listinfo/u2-users
 
 --
  CONFIDENTIALITY NOTICE: If you have received this email in 
 error, please immediately notify the sender by e-mail at the address 
 shown.
 This email transmission may contain confidential information.  This 
 information is intended only for the use of the individual(s) or 
 entity to whom it is intended even if addressed incorrectly.  Please 
 delete it from your files if you are not the intended recipient.  
 Thank you for your compliance.  Copyright (c) 2013 Cigna 
 ===
 ===
 
 ___
 U2-Users mailing list
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This message may contain confidential information and is intended for the sole 
purpose of communication with the addressee. Dissemination or publication in 
any format is strictly prohibited. If you have received this communication in 
error please notify SEFCU immediately.

Help save a tree. Please print this e-mail only if it is truly necessary. Thank 
you.
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