John,

More RAM will help, you can never have too much of it. These are the items to look for:

1. Are there any volumes > %90 full? Volume over %90 can degrade performance, especially on busy volume. 2. For cifs you can use "cifs top" command ( "cifs.per_client_stats.enable" must be on). These will show the top cifs clients ops. There's also one for NFS on NOW. 3. use "statit" command. This will provide a lot of very good information of what's going on. 4. If you have DFM v3.0 or higher, use the DFM client that comes with it. It's has a lot of good performance stats.

As for the replacement upgrade, I suggest talk to your local Netapp. There are many things to take into consideration to make a good recommendation.

Good luck, Marcus Bui

-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Stewart, John Sent: Tuesday, February 08, 2005 12:51 PM To: 'toasters@mathworks.com' Subject: F740 memory upgrade to lower CPU utilization?

We've got an F740 with 3 fully populated FC9 shelves, 36Gb disks, 432GB used (30 free).

In the last couple of months the CPU has been getting higher and higher utilization. We've only got 512MB of RAM in there. Would an upgrade (to 1GB) be advisable? CPU isn't upgradable, is it?

If we're pegging an F740 like this, and have 0.5TB of data now.... assuming a growth to 2TB in the next 3 years, what sort of box should we be looking at for a replacement (need to get the bean counters prepared)?

thanks!

johnS

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