<p>Hello,</p>
<p>Some suggestions for general guidance:</p>
<p>- Avoid deduplication. Maybe use compression at low level or fast algorithm to get dedup effect ALSO. With compression you get dynamic sector size also.</p>
<p>- RAIDZn is for space, not for performance. Beware.</p>
<p>- RAIDZn is not cheap to expand.</p>
<p>- 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%.</p>
<p>- RAM, more RAM, much more RAM. Did you get RAM? Is not enough. Buy more RAM.</p>
<p>- Buy the fastest SLOG device you could. ZeusRAM is one of the suggestions.</p>
<p>- Cyrus most writes are simultaneus variable size small random synchronous. THE nightmare for all filesystems and storage. Keep in mind.</p>
<p>- 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</p>
<p> </p>
<p>Good luck.</p>
<p>Andre Felipe</p>
<p> </p>
<p>Mikhail T. <mi+cyrus@aldan.algebra.com> wrote ..</p>
<blockquote>
<p>I'd like to move my current spool from a single (fast) disk to ZFS. Any suggestions for the filesystem-parameters?</p>
<p>Do I want deduplication, for example? Compression? Recordsize?</p>
<p>Thanks!</p>
<blockquote>
<p>-mi</p>
</blockquote>
</blockquote>
<p> </p>