Re: [Networker] kmr-bkupsvr's savegroup completion

Hi Mike

127 GB in 6 hours equals 127,000 MB in 21600 seconds, which is 5.9 MB/s.
Is your network backup line a 100 MB (megabyte) line or a 100 Mb
(megabit) line?  Network pipes are usually quoted in Mb (megabit).  So a
100 Mb line is 100 Mb / 8 bits per byte = 12.5 MB/s.  So if you have a
pipe capable of 12.5 MB/s, is only used by your backups, and your
backups run at 5.9 MB/s, then you know that the limiting factor isn't
your network pipe.

Use the NetWorker User Mailing List (networker AT listserv.temple DOT edu) for
these kinds of questions, because you'll get a lot of people looking at
it and offering ideas.

Hope this helps.
tl

-----Original Message-----
From: Sferrino, Michael - 0993 - MITLL
[mailto:michael.sferrino AT ll.mit DOT edu] 
Sent: Friday, June 11, 2010 11:45 AM
To: Lemons, Terry
Subject: FW: kmr-bkupsvr's savegroup completion - Terry one last
question before I leave, need some math help?

Terry,

        I'll try and give you all the pieces you need here, I always
have trouble calculating the actual MB that gets pushed out during this
backup with our Qualstar running over the network.

        The "easy Math" is the backup below does a full backup in 6
hours of a 127GB...that comes out to 21GB/hour...so that equates to
350MB per minute or about 1GB every 3 minutes....which comes out to
5MB/sec does that sound right to you?

        So that said, the network backup line goes over is 100MB line
and the distance is about a half a mile between buildings. We have a
Qualstar 

        I was wondering whether or not the drives in the Qualstar are
performing and at what speed they are pushing data at...becasue I know
certain drives have only the limit of the network speed...I'm just
trying to figure out how many MB/per second are being used by the LTO's
drives in our Qualstar, I probably already have most of the answer, but
if you could help?

Lastly, I spoke with Qualstar they said that LTO 4 drives have a minimum
speed of 30MB/second and the max speeds are 130MB/sec WITHOUT
compression and 260MB/sec WITH compression...and we are ONLY getting
5MB/sec based on my math above?

Can you check out my math above and read the rest of the E-mail and see
what you think?

Thanks,
Mike

-----Original Message-----
From: root [mailto:root AT kmr-bkupsvr.kmr.ll.mit DOT edu] 
Sent: Thursday, June 10, 2010 10:27 PM
To: Sferrino, Michael - 0993 - MITLL; Champigny, Susan - 0993 - MITLL
Subject: kmr-bkupsvr's savegroup completion

NetWorker savegroup: (notice) haystack completed, Total 1 client(s), 1
Succeeded. Please see group completion details for more information.

Succeeded: hayfs

Start time:   Thu Jun 10 21:30:00 2010
End time:     Fri Jun 11 02:26:50 2010


--- Successful Save Sets ---

* hayfs:Probe savefs hayfs: succeeded.
* hayfs:/ 66135:(pid 13730): NSR directive file (/nsr/run/.nsr) parsed
* hayfs:/ 66135:(pid 13730): NSR directive file
(/nsr/cores/nsrexecd/.nsr) parsed
  hayfs: /                          level=full,    127 GB 04:56:37
1386952 files
  hayfs: /boot                      level=full,   6146 KB 00:01:52
27 files
  kmr-bkupsvr.kmr.ll.mit.edu: index:hayfs level=full, 1050 MB 00:00:15
32 files

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the body of the email. Please write to 
networker-request AT listserv.temple DOT edu if you have any problems with this 
list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
Re: [Networker] kmr-bkupsvr's savegroup completion - Terry one last question before I leave, need some math help?
