Hi Rohit,

My view is that your application performance is the most important. This is what our users see and feel. The problem is that for every application, the impact of the storage on the performance is different.
For our Databases, responstime is the key. So for those applications we measure the latency.
For our PACS (digital radiology) is Mb/s  more important.

So we try to measure the application performance and the key infrastructure elements of that application (like latency).

On filer level, we monitor the CPU to give a general idee of the load of the filer.

Best regards,

Reinoud Reynders
IT manager Infrastructure & Operations
Leuven University Hospital

-----Original Message-----
From: owner-toasters@mathworks.com <owner-toasters@mathworks.com>
To: toasters@mathworks.com <toasters@mathworks.com>
Sent: Wed Nov 15 11:58:39 2006
Subject: Measuring Filer Performance

Hi Folks

I had some open questions and i hope you'll help me answer them based on
your experience.

1. If you just had a single metric to determine filer performance what
would it be ?
   Would it be CPU usage, throughput, latency, IOPS..or anything else ?

2. At your place, what metrics do you use to determine if a filer is
still good enough not to worry about ?

thanks
rohit

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