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63
U Series User Manual
3.
Click Ok to set the read cache.
4.
Repeat step 1~3 to set the write cache.
TIP: Only SSD drives can be used as SSD cache, which includes read cache
(L2ARC) and write cache (ZIL, ZFS Intent Log).
Starting from FW1.0.3, only SSD drives that are shipped by JetStor can be used
as SSD cache. This is to ensure the upmost compatibility and performance
improvement. Other SSD drives can be used as RAID disks only.
TIP: All the file systems and volumes created inside the pool can all benefit from
the addition of SSD cache.
Take an example to set the free PD as dedicated spare disk.
1.
Go to Add disks -> Dedicated spare. Select the drive(s) you want to use for dedicated
spare. Only qualified HDD drives which size is larger than or equal to the pool
member disks will be listed for user selection. Others will be filtered out.
2.
Click Ok to set the dedicated spare.
ZFS
The menu Configuration -> Storage -> ZFS or Configuration -> ZFS tab of the operation area
provides functions to manage ZFS datasets such as create, edit, delete, take snapshot, auto
snapshot or view the status of the ZFS.