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What should a Volume Limit be for Users on a Network be???

By michael.hume ·
Our users have a Personal Home Dir on the Network and it is growing a little to fast for our Back-Ups. Is there a study somewhere with info on what users should have for personal space on the network, that makes sence. I do not want to just say this is your limit and nothing further. Hopeing to find some info to back up my justification for a limit size.

thanks in advance...

Michael Hume

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Why not just do the simple math

by jmgarvin In reply to What should a Volume Limi ...

# of users / Amount of disk space

Make that their quota. I typically see quotas from 20mb all the way up to 100mb, depending on storage.

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Math works for some

by Maevinn In reply to Why not just do the simpl ...

I prefer to use that as a guideline, and then review the needs of the users. What are they putting on there? Work related files, or just anything, like personal pictures and such? You need clear guidelines on what they should be putting on the system, based on business requirements. For example, I've seen users try to use network space to 'backup' a file that is located elsewhere on the network--poor use of space. But a database that is not located elsewhere on the network would be a good use. The types of files being backed up can vary widely as well--so you need to have some idea if they're backing up lots of small files, or lots of large ones.

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Exactly right. Audit usage.

by stress junkie In reply to Math works for some

It is amazing what most people will store on the computers in work. If you make a policy that all disk use is strictly for business use and is subject to being audited then some people will not store pornography and MP3s at work.

A regular audit of the things that end users are storing on the company's computers will make it clear that contraband will be found eventually.

You can implement a procedure where people ask for disk space. They would have to provide the business use for that space and an estimate of the amount required. That will also help end users get the idea that company computers are not for personal use. The idea that people should be allocated a significant amount of disk space when a user account is created is old fashioned. Today many people don't need any disk space for their account. They use storage areas that are common for their department.

Naturally when people ask for justification then you just tell them about the way that overnight backups have become problematic. Maybe there aren't enough tapes. Maybe the backups are running longer than they should. Whatever the reason, backing up end users' personal files consumes business resources.

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Let the backup software decide

by wallowamichael In reply to What should a Volume Limi ...

I try to let everyone have as much room as is available on the system. However, that can quickly exceed backup capacity.<BR><BR>
So the policy is, work files will be backed up, personal files will not. There is one directory in each user's area that is used for work, and a script is run before the backup to make sure that there are no .tmp, .mp3, .wav, .jpg (etc) in that directory or its subdirectories. If there are, they get deleted! Then the backup job runs.<BR><BR>
Unfortunately, we don't do so much diligence finding work files in places they're not supposed to be, but even after two system crashes in three years, we've lost no 'company' data.<BR><BR>
You should also plead a case to IT management to continue to grow your backup capacity on a fairly consistent basis. Company data does grow, compliance issues create the need for more extensive (therefore bigger) backups. As collaboration and e-mail continue to be the way more companies do business, just backing up those infrastructures takes more space on our backup system than all other data combined!<BR><BR>
Good Luck! - Keep those backups rolling!<BR><BR>
Another option is to backup to RAID array during off hours (very quick) and then doing the tape backup during the day from the HD backup, if the tape backup is taking too long overnight.

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