I haven't had to change the buffers or any other settings and it's made a big
difference but I didn't really experiment with different numbers. I landed on
10 based on similar experience using 10 sessions for DB2 API backup/recovery.
Our largest SQL server backup is probably in the 500-600 GB range, so we aren't
operating on the same scale as you are.
Del is right that this is only for 'legacy' backups, not for VSS-offloaded.
__________________________
Matthew McGeary
Senior Technical Specialist – Infrastructure Management Services
PotashCorp
T: (306) 933-8921
www.potashcorp.com
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Tom Alverson
Sent: Monday, March 27, 2017 2:17 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Best Practices/Best Performance SP/TSM B/A Client
Settings ?
I will try that tonight. Do you change any of the other "performance"
settings from the defaults?
Thanks!
Tom
On Mon, Mar 27, 2017 at 3:24 PM, Matthew McGeary < Matthew.McGeary AT
potashcorp DOT com> wrote:
> If you're using TDP for SQL you can specify how many stripes to use in
> the tdpo.cfg file.
>
> For our large SQL backups, I use 10 stripes.
>
> __________________________
> Matthew McGeary
> Senior Technical Specialist – Infrastructure Management Services
> PotashCorp
> T: (306) 933-8921
> www.potashcorp.com
>
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Tom Alverson
> Sent: Monday, March 27, 2017 1:11 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] Best Practices/Best Performance SP/TSM B/A
> Client Settings ?
>
> Our biggest performance issue is with SQL backups of large databases.
> Our DBA's all want full backups ever night (and log backups every
> hour) and for the databases that are around 1TB the backup will start
> at Midnight and finish 5 to 13 hours later (varies day to day). When
> these backups start extending into the daytime hours they complain but
> I don't know how we could improve the speed. Our Storage servers all
> have 10GB interfaces but they are backing up hundreds of clients every
> night (mostly incremental file level backups). I am running a test
> right now to see if RESOURCEUTILIZATION 10 helps one of these database
> backups but I suspect it will make no difference as 99% of the data is
> all in one DB and I don't think SQL/TSM will split that into multiple streams
> (will it?).
>
> On Sun, Mar 26, 2017 at 6:57 AM, Del Hoobler <hoobler AT us.ibm DOT com>
> wrote:
>
> > Hi Tom,
> >
> > My original posting was an excerpt from best practices for container
> > pools, and does not necessarily apply to other storage pool types.
> >
> > Yes, client-side deduplication and compression options should be
> > avoided with a Data Domain storage pool.
> >
> > A fixed resourceutilization setting of 2 may underperform for
> > clients that have a lot of data to back up and fast network
> > connections, but this is not a black and white answer. There are
> > various other conditions that can affect this and trying to narrow
> > in on them in
> ADSM-L would be difficult.
> > If you want some help with a performance issue, please open a PMR.
> >
> >
> > Del
> >
> > ----------------------------------------------------
> >
> > "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 03/25/2017
> > 12:20:43 AM:
> >
> > > From: Tom Alverson <tom.alverson AT GMAIL DOT COM>
> > > To: ADSM-L AT VM.MARIST DOT EDU
> > > Date: 03/25/2017 05:40 AM
> > > Subject: Re: Best Practices/Best Performance SP/TSM B/A Client
> > > Settings
> > ?
> > > Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
> > >
> > > Del:
> > >
> > > We have been using these settings as our defaults. Is our
> > > TCPWINDOWSIZE too large?
> > >
> > > RESOURCEUTILIZATION 2 (we increase this up to 10 for some WAN
> > > backups) TXNBYTELIMIT 2097152 TCPNODELAY YES TCPBUFFSIZE 512
> > > TCPWINDOWSIZE 2048 LARGECOMMBUFFERS YES
> > >
> > > Also we never use compression because our storage folks believe it
> > > will foul up the de-duplication that happens on our Data Domains??
> > >
> > > On Mon, Mar 20, 2017 at 9:11 PM, Del Hoobler <hoobler AT us.ibm DOT com>
> wrote:
> > >
> > > > Hi Ben,
> > > >
> > > > Here are some items to get you started:
> > > >
> > > >
> > > > Backup-Archive client with limited, high latency network (WAN
> > backups):
> > > > ===============================
> > > > TCPWINDOWSIZE 512
> > > > RESOURCEUTILIZATION 4
> > > > COMPRESSION Yes
> > > > DEDUPLICATION Yes
> > > > ENABLEDEDUPCACHE Yes
> > > >
> > > > Tip: Do not use the client deduplication caching for
> > > > applications
> > that
> > > > use the IBM Spectrum Protect API. Refer to section 1.2.3.2.1
> > > > for additional details.
> > > >
> > > >
> > > > Backup/Archive client or Client API with limited network
> > > > (Gigabit LAN
> > > > backups):
> > > > ===============================
> > > > TCPWINDOWSIZE 512
> > > > RESOURCEUTILIZATION 10
> > > > COMPRESSION Yes
> > > > DEDUPLICATION Yes
> > > > ENABLEDEDUPCACHE No
> > > >
> > > >
> > > > Backup/Archive client or Client API with high speed network (10
> > Gigabit +
> > > > LAN backups)
> > > > ===============================
> > > > TCPWINDOWSIZE 512
> > > > RESOURCEUTILIZATION 10
> > > > COMPRESSION No
> > > > DEDUPLICATION No
> > > > ENABLEDEDUPCACHE No
> > > >
> > > >
> > > > Tip: For optimal data reduction, avoid the following client
> > > > option
> > > > combination:
> > > >
> > > > COMPRESSION Yes
> > > > DEDUPLICATION No
> > > >
> > > >
> > > >
> > > >
> > > > Del
> > > >
> > > > ----------------------------------------------------
> > > >
> > > > "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on
> > > > 03/15/2017
> > > > 02:39:04 PM:
> > > >
> > > > > From: "Alford, Ben" <balford AT UTK DOT EDU>
> > > > > To: ADSM-L AT VM.MARIST DOT EDU
> > > > > Date: 03/15/2017 02:39 PM
> > > > > Subject: Best Practices/Best Performance SP/TSM B/A Client
> > > > > Settings
> > ?
> > > > > Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
> > > > >
> > > > > I've looked at the IBM Blueprint documents but may have missed
> > > > > what I was looking for - the Best Practices for Best
> > > > > Performance
> for TSM
> > > > > B/A client settings. As we move from 6.4 to 7.x or 8.x clients
> > > > > before the 6.4 EOL, we are looking to test with the current
> > > > > client settings optimized for things like TCPBUFFSIZE,
> > > > > TCPWINDOWSIZE, TXNBYTLIMIT, etc., etc.
> > > > > Thanks!
> > > > >
> > > > > Ben Alford
> > > > > IT Manager, Office of Information Technology
> > > > > Systems: Shared Services
> > > > >
> > > > > The University of Tennessee
> > > > >
> > > >
> > >
> >
>
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