Skip to content

Tag Archives: L2ARC

Flash disk cost and performance (USB, SSD, SDHC)


I’ve been reading up on using a USB flash drive as an L2ARC for ZFS. Some reason that since the bandwidth of USB is much lower than SATA. However, others reason that since the USB flash drive has no seek time, it will speed up non-sequential reads, which is what the L2ARC is there for. […]

Adding cache device to ZFS


I went ahead and bought this USB stick to put in the back of my Portwell machine. The idea is to use it as a device cache to speed up my ZFS tank. Based on this post by Alexander Leidinger, it should reduce latency (when data is in the cache), but not otherwise. I was […]