Re: [Veritas-bu] SAP backups / Online / Redo

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
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