Capacity Planning

[Robert Miller_4]

What is the easiest way to collect disk space utilization information on hard drives for numerous HP9000 systems?

Thanks in advance.

[Bernhard Mueller]

How easy it is depends mainly on your environment, i.e. do you have DiskArrays, JBODs, Clusters, LVM-Mirroring etc.

If you have a simple environment you could start with
vgdisplay | grep -E "VG Name|PE Size|Free PE"

which gives you some numbers which do not consider mirroring by LVM vs. Array. Also it does not account for unused disks (or cluster disks active on another node).

Hope this helps a little.

Regards
Bernhard

[Robert Miller_4]

Our environment is very complex. We have DiskArrays, JBODs, Clusters, LVM-Mirroring.

I need the utilization broken down from the number of disks (local disks, diskarrays) to the utilization of Oracle space. There are a lot of steps between the above mentioned to get utilization information.

The diskinfo command should give me the maximum space for all hard drives on all systems. That was the easy part. The df or bsd command should give me utilization for file systm space.

I would like to know if this can all be put together and if anyone has done it before? If so, how? There may be third party tools that will assist that I don't know about.

Thanks again.

[Jon Mattatall · Accepted solution]

We went through this recently while preparing for transition to a SAN, and I'm sorry to say we could not find a tool that fit all cases.

We connect to the servers by SSH, so we did whip up an "everywhere" script to let us run the same commands on all the servers at once (well, sequentially, but you only needed to enter the commands once), but it was diskinfo, bdf, du that we wound up using.

It may not help with the data collection, but making note of the #/size of drives in arrays AND the free slots available has come in handy
when there's a sudden cry for more disk...

[Steve Britt]

Robert,

I don't want to sound like a shill for HP (I'm a software engineer, not a marketeer) but I work in a lab that produces software to do pretty much everything you need with regard to capacity reporting and planning. Disk space utilization of your entire storage environment including JBODs, arrays, and even local disks can be monitored and managed via OpenView Storage Builder. This product, although part of the OpenView Storage Area Manager suite, can be licensed separately. You can read more about it at http://h18006.www1.hp.com/products/storage/software/storagebuilder/index.html.

[Thatcher Furgerson_2]

Try a google search for cfg2html. This will help you get started. I installed today and it was easy (software depot format) and gave an html output that looks pretty usefull. It did not require a reboot and was a quick install.