3 ms·
Both the L2ARC and the ZIL can be put on separate vdevs (IIRC), to use faster or more reliable SSDs. L2ARC typically wants a pair of striped fast SSD vdevs whil
by burntrelish1273 9y ago
Both the L2ARC and the ZIL can be put on separate vdevs (IIRC), to use faster or more reliable SSDs. L2ARC typically wants a pair of striped fast SSD vdevs while the ZIL should be on a mirror vdev of higher-reliability (SLC-like) SSDs.
Also, be sure to have 8+ GiB system RAM available at all times or performance is gonna suck.