This is my first time posting I just inherited 2 older filers. 840 and 960 models
Unfortunately they didnt come with nearly enough disk space for our needs.
I know I cant fill the volumes to 100% and expect them to work but how high can I fill the volumes and expect it to work and performance not to suffer . Can I go to 95% if I turn off snapshots?
The answer depends on a couple factors (rate of data change, I/O patterns), but generally speaking performance suffers as file systems fill up, but it will get really bad once you hit 80%-90% of the entire volume/ aggregate size.
Granted, you'll get more usable space with no snap reserve, but that's not a good idea seeing as snapshots are one of the compelling features of Filers.You'll need to determine how much do disks costs compared to slower restore times due to *not* using snapshots? If performance is critical, then I'm guessing availability is as well.
Since we've covered the general rules, you'll need to do some analysis of your systems to determine your I/O and usage patterns to get an idea of what sort of ramifications filling a filer to 95% has in your environment.
sysstat, statit and perfstat.sh will provide you with the necessary information to make a more informed decision.
Regards, Max
Any feedback or experience from filers at 95% would be appreciated Im hoping to learn from other peoples mistakes this time.
Of course theres always the option of buying more disk but for now I need to see what I can do with what we've been given without spending more money.
Cheers Philip
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