ZFS Performance Tips
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-ZFS uses a lot of memory, so it is best to add additional 8-16GB RAM
-if you want to use ZFS.
+ZFS uses a lot of memory, so it is best to add additional RAM if you
+want to use ZFS. A good calculation is 4GB plus 1GB RAM for each TB
+RAW disk space.
ZFS also provides the feature to use a fast SSD drive as write cache. The
write cache is called the ZFS Intent Log (ZIL). You can add that after