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Performance Log (Disk Time)

Posted on 2006-07-16
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Last Modified: 2010-05-18
I have setup counter to monitor disk time on 2 of my physical disk. I understand the guideline shd be less than 50% but my data collected is as follows

Disk 1
Disk time = 500000 - 6000000

Disk 2
Disk time = 2.7

I need some experts to help me interpret the huge difference in the 2 disk. As it is calculated in %, I was thinking how come the disk time for disk 1 can come up to such a ridiculous value.
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Question by:dc-ops
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Expert Comment

by:rindi
ID: 17122391
what are the disks used for?
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Author Comment

by:dc-ops
ID: 17127597
The server is a file server. The disks serve as a storage for file storage. There is trasferring of files in & out of the server frequently.
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Expert Comment

by:rindi
ID: 17127691
Actually what I am asking is, what is on drive one and what is on drive two?
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Author Comment

by:dc-ops
ID: 17135536
Disk 1 is the system disk with a logical drive, consist of OS and program files. Disk 2 is for files storage with 3 logical drives.
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Expert Comment

by:rindi
ID: 17135604
The OS and Program drives usually have activity initiated by windows itself, all the time. Storage drives on the other hand only get accessed when a user actually reads or writes to that area. This can cause this big difference without any problems.
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Author Comment

by:dc-ops
ID: 17136320
So what is the guideline for the disk time in % as I read in some article that the recommended should be < 50%
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Accepted Solution

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rindi earned 750 total points
ID: 17136434
There is no standard guideline. You must know how your PC is accessed, by how many people and what for. The disk will allways be accessed, and depending on the number of apps running this access will be more or less. You should first check your processes running and not the disk access.

what you should make sure of is that there is somewhere like 20% free space on your partitions, and that they are defragged. If the partition is full this will make it difficult to store temp data, and if it is very fragmented, the heads will have to move more to get the job done.
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