July 7, 20169 yr I've always attempted to keep a decent amount of available disk space on any system I've used, not filling drives too close to capacity. Is there a guideline for such with unRAID? I just built a system and underestimated how much storage I would need to start (mainly because I've come up with additional uses of my new NAS that I didn't expect right away). I have another 6tb drive on order and it should be here by Friday. But at this time, my existing data drive is at about 95% capacity. Am I OK or should I move off some data until I get the new drive installed? The drives in my system now include a 6tb data drive, 6tb parity drive, and 480gb SSD cache drive. Thank you in advance for the guidance.
July 7, 20169 yr As long as you are using XFS (as opposed to ReiserFS) you can fill them almost to the top. I have less than 8 GB free on each of several 5 TB and 6 TB disks and it doesn't cause any problems.
July 7, 20169 yr Since we're on the subject. How full can you fill a drive on ReiserFS, and still be safe? Sent from my SM-N900W8 using Tapatalk
July 7, 20169 yr ... Since we're on the subject. How full can you fill a drive on ReiserFS, and still be safe? As full as you want. 12 of the 14 drives on my media server show 100% full ... they actually have between 17MB and 1.2GB free (all but one have < 1GB). And they're all Reiser disks. There's NO read "penalty" with a very-full drive; but writes ARE notably slower with very-full Reiser disks. But they still work fine; and for static data (e.g. media files) there's no reason not to simply fill up the drives. My other servers are both set up with all-XFS drives; and there is clearly an improvement in writes to drives as they become very close to full (98% +). So for a new server I'd use XFS, but there's no compelling reason to switch existing full drives from RFS if their content is essentially static.
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