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Anyone here tried to bring I/O lag down to absolute zero on their NAS array?
| https://imgur.com/a/o2g8xYK | 01/04/25 |
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Date: January 4th, 2025 11:28 PM Author: https://imgur.com/a/o2g8xYK It's totally doable. You gotta have a RAM cache for "dirty writes," a SSD array for normal write cache, and hard drives all on a ZFS pool (or a RAID 5 or 6, if that's all you got). Mount everything locally and do cp in a persistent terminal for all your large transfers.
The main thing is that you have to give the array a yuge chunk of your RAM. Don't run any containers you don't absolutely need, and spred dem dirty writes around. Have a UPS that can run for at least 15 minutes or however long it takes to flush the RAM. It's very easy to do the math with modern software. |