RE: Help with Storage Capacity
- From: "Mark W. Farnham" <mwf@xxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 19 Apr 2012 13:13:49 -0400
This response and Hans' response earlier are both good. Also remember to
ensure there is enough I/O capacity in the growth plan. In particular, when
left in the hands of storage administrators unfamiliar with your needs, they
*may* address your storage growth by moving you onto a smaller number of
much larger disks. Your storage below could easily fit on a single disk at
today's sizes.
It is also worthwhile considering the growth quanta that is easiest to
incorporate in a running system. Often that is a full new tray in a SAN, for
example.
Regards,
mwf
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Iotzov, Iordan
Sent: Thursday, April 19, 2012 12:02 PM
To: mdinh@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: RE: Help with Storage Capacity
Michael,
Someone would need to do disk usage forecasting based on historical
data. The request for adding/dropping disk space should be based on the
results of the above mentioned forecast in conjunction with the estimate of
how much disk space would be needed to accommodate "non-typical" future
usage. The person in charge should be actively involved with the business to
figure out those "non-typical" changes (things like rapid product/geographic
expansion, exit from markets, etc) - no formula or process would be able to
get that information for him/her.
I personally use simple linear regression for forecasting, but I am
sure there are many other good methods. If you use Oracle Enterprise Manager
(OEM), you can check my presentation
-http://iiotzov.files.wordpress.com/2011/08/iotzov_oem_repository.pdf to see
how I do it. Please note that you can use those techniques to forecast file
system sizes as well.
Iordan Iotzov
http://iiotzov.wordpress.com/
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Michael Dinh
Sent: Thursday, April 19, 2012 11:18 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Help with Storage Capacity
We have a database server with one of the largest and fastest growing
customer.
Here is the current size of the database server.
What process do you have to decide when to add more storage? Do you have to
request for more storage or does the sysadmin monitors the server and add
accordingly?
I am trying to understand what processes are out there. Thanks.
Wed Apr 18 16:15:01 PDT 2012
Filesystem size used avail capacity Mounted on
/ 998G 818G 178G 83% /
Michael Dinh
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