Hi Justin
In specific it's SAP jobs.
As mentioned over 60 policies start from 9pm but each one is a SAN media server
and each client in its own policy. So I have 10 SAP jobs each using a tape
drive from library.
This means other jobs end up queued.
I can run thousands ok jobs... But jobs will queue if no drives are available
to do the backups on.
Backups using same volume pool. But I believe because the policies are using
its own SAN media server as a storage unit, it's only backing up itself,
therefore a tape is assigned to that policy.
I'd like to find out why I could not group multiple SAP backups together. These
jobs Justin run a command script, and they start the parent & child jobs.
S.
> On 18 Dec 2013, at 20:05, "Justin Piszcz" <jpiszcz AT lucidpixels DOT com>
> wrote:
>
> Hi Simon,
>
> Some comments:
> 1. How many jobs are too many? 500 concurrent jobs? 1000 concurrent jobs?
> 2000 concurrent jobs? With a UNIX master, if properly spec'd out-- I've
> seen it handle 1000-1500 jobs without a problem.
> 2. Have you considered moving the platform to Linux or adding additional
> Windows media servers to help cope with the load?
> 3. Are all of the backups using the same volume pool?
> 4. "All LTO4 drives are maxed out" -- the drives themselves are full, (tape
> loaded, ok), but did you also mean they are maxed out throughput-wise as
> well? Are you achieving 90MiB/s (if already compressed) data to each one?
> If not, have you considered increasing the multiplexing?
> 5. If there are a bunch of single-stream host jobs, I'm assuming you are
> *disallowing* multiple streams, otherwise that would seem to get out of
> control quickly?
>
> The background I have is with Oracle, not SAP though, so my comments revolve
> around those types of backups.
>
> Justin.
>
>> -----Original Message-----
>> From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-
>> bounces AT mailman.eng.auburn DOT edu] On Behalf Of Simon Weaver
>> Sent: Wednesday, December 18, 2013 2:54 PM
>> To: VERITAS-BU AT mailman.eng.auburn DOT edu
>> Subject: [Veritas-bu] SAP backups / Online / Redo
>>
>> All
>> I've been trying to troubleshoot performance and backup issues at an
>> environment where all LTO4 drives are maxed out with these type of jobs
>> and causing many others to queue or run at an incorrect time.
>>
>> There are close to around 60 policies where we have online, off-line, and
>> redo log backups.
>>
>> In each policy there was only a single client listed. A lot of these
> policies are
>> sand media servers therefore they backup themselves.
>>
>> The problem is we have too many jobs running concurrently and due to the
>> vast amount of data on the servers, there is insufficient resources
> available
>> for NBU to resume the queued jobs.
>>
>> I would be interested to know if anyone else has a large environment of
>> SAP/Oracle backups and what they do backups, because presently these
>> jobs I can shaming 98% of our resources and our windows phone service I
>> currently struggling to get backed up.
>>
>> This separate tape drive all these will be in place, but I want to enquire
> if
>> there is anything that could be done to may be group the SAP online
> backups
>> into one policy.
>>
>> But I'm also interested to hear of any ideas or methods that you may be
>> using now.
>>
>> Thanks
>> Si
>> _______________________________________________
>> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
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>
>
>
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