Hello,
Some suggestions for general guidance:
- Avoid deduplication. Maybe use compression at low level or fast algorithm to get dedup effect ALSO. With compression you get dynamic sector size also.
- RAIDZn is for space, not for performance. Beware.
- RAIDZn is not cheap to expand.
- Place your indexes/metadata at different zpool of disks/ssd configured for absolute max performance. Indexes and metadata are "small" compared to data. Up to 20%.
- RAM, more RAM, much more RAM. Did you get RAM? Is not enough. Buy more RAM.
- Buy the fastest SLOG device you could. ZeusRAM is one of the suggestions.
- Cyrus most writes are simultaneus variable size small random synchronous. THE nightmare for all filesystems and storage. Keep in mind.
- maybe this article could help with some info: http://www.techforce.com.br/content/zfs-part-4-multithreaded-sustained-random-small-files-synchronous-write-iops
Good luck.
Andre Felipe
Mikhail T. <mi+cyrus@xxxxxxxxxxxxxxxxx> wrote ..
I'd like to move my current spool from a single (fast) disk to ZFS. Any suggestions for the filesystem-parameters?
Do I want deduplication, for example? Compression? Recordsize?
Thanks!
-mi
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