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Tag Archives: SSD

Kingston SV100S264G 64GB Benchmarks


m using a couple of these for log devices (ZIL). I’ve benchmarked them before, but the system is way more stable (got rid of some old SATA cables etc). I removed them from the tank, and here are some dd benchmarks:

They’re roughly in the 150 MB/s range with large (4MB) records, and 32 […]

Plextor 256GB M5 Pro SSD Benchmark


Using Crystal Disk Mark and stock firmware (just got it yesterday). Drive label says firmware 1.02. Formated at NTFS with default settings. After upgrade to latest firmware (1.05): New firmware greatly improved queue depth of 32 (QD=32) performance. Be the first to like. Like Unlike

Sandisk 5000 SSD Measurements


These are a couple of old 8GB (7.5GbB). Their specs are like so: Doing sequential read measurements (I have two of these SSD’s, one as tank_zil0 and one as tank_zil1): Doing sequential write measurements: I didn’t want to write directly to the raw device, as I didn’t want to delete the GPT partition table. Anyway, […]

SSD investigations on my ZFS server


From a previous post, I noticed the SSD that I’m using in my server showed only a 50 MB/s write speed. That’s weird because the specs show around 145 MB/s. So, I decided to investigate some more. I removed the SSD from the zpool and did some dd tests on it. That last run (which […]

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. […]