====== ZFS - Pools - Add Intent Logs to a Pool ======
ZIL (ZFS Intent Log) drives can be added to a ZFS pool to speed up the write capabilities of any level of ZFS RAID.
* One normally would use a fast SSD for the ZIL.
* Conceptually, ZIL is a logging mechanism where data and metadata to be the written is stored, then later flushed as a transactional write.
* In reality, the ZIL is more complex than this.
* One or more drives can be used for the ZIL.
----
===== Add a drive to the pool for ZIL =====
sudo zpool add testpool log /dev/sdg -f
**NOTE:** This can speed up writes.
* Typically a fast disk like an SSD will be used.