[ExchangeList] Re: OT: NetApp

  • From: "Irwan Hadi" <ihblist2@xxxxxxxxx>
  • To: exchangelist@xxxxxxxxxxxxx
  • Date: Wed, 18 Jul 2007 17:51:54 -0600

http://www.msexchange.org
-------------------------------------------------------We are currently running 
two Exchange 2003 on two NetApp FAS270 at two
different sites using Fibre Channel and boot from SAN, and pretty
happy with it in terms of performance.
I found that it has much better performance than our EMC CX300 when we
benchmark using Exchange JetStress.

The best way to learn this appliance is to download and read its
manual (which are pretty easy to follow and well documented). You can
get it at https://now.netapp.com
NetApp also has an ONTAP simulator that you can download, in case you
want to be more familiar with it.
You can also read some best practices that Netapp has at
http://www.netapp.com/library/tr/fulllib?v=n

In essence once you know a rough guess of how many users you have, and
how big your Exchange database will be, you need to setup your
aggregate with enough disk, then setup a flexible volume (eg:
exchange1vol), then disable the automatic snapshot for this volume,
then setup your igroup (lun masking), then carve up your LUN, and
associate the LUN with the igroup.

Our FAS270 with 11 data disks, 2 parity, and 1 spare can easily handle
up until about 4000 IO /sec (verified both by running sysstat -u 1
within the filer, and using Windows Performance Monitor during
Exchange online defragmentation. Exchange online defrag usually is
pure random read)

CPU   Total    Net kB/s    Disk kB/s    Tape kB/s Cache Cache  CP  CP Disk
      ops/s    in   out   read  write  read write   age   hit time ty util
51%    4832     0     0  26596      0     0     0     1   99%   0%  -  53%
39%    2518     0     1  19317    787     0     0     1   98%  29%  T  68%
41%    3320     0     0  20072      0     0     0     1   98%   0%  -  71%
44%    3928     0     0  24284      0     0     0     1   98%   0%  -  66%
38%    2534     0     0  17900      0     0     0     1   98%   0%  -  71%
38%    3060     0     0  17280      0     0     0     1   98%   0%  -  67%
38%    2898     0     0  17411      0     0     0     1   98%   0%  -  50%
42%    3606     0     0  20536      0     0     0     1   98%   0%  -  60%
47%    4424     0     0  24128      0     0     0     1   99%   0%  -  58%
44%    3972     0     0  21784      0     0     0     1   99%   0%  -  61%
39%    2889     0     0  19224      0     0     0     1   98%   0%  -  56%
37%    2196     0     0  16484   1502     0     0     1   97%  46%  T  67%


Although snapshot creation in NetApp is instant and does not take any
resources, you need to disable the automatic snapshot, as you want to
ensure that everything has been flushed to disk, before you do
snapshot.

We setup one flex volume for our server, and within that volume we
have three LUNs (Server system LUN (20 GB - 30 GB), exchange log LUN
(50 GB to 100 GB), and exchange data LUN (200 GB and above)
With this, if we have more users, we can always extend our exchange
log LUN or exchange data LUN.

Overall the config are pretty straightforward. Nothing
special/specific that you have to tune.

Let me know if you have further questions.

On 7/18/07, John B <brookboyz1403@xxxxxxxxx> wrote:
http://www.msexchange.org
-------------------------------------------------------All,

Is anyone using NetApp with their Exchange boxes?  If you are can you please 
shoot me some links or point me in the direction where I can learn about this 
appliance?

Thank you,

________________
John Bowles








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