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Tag Archives: SSD

Inateck USB3 2.5″ enclosure


I got an Inateck USB 3.0 2.5″ SATA III disk enclosure. I placed my OCZ SSD in there, and got the following Crystal Disk Mark results: ———————————————————————– CrystalDiskMark 5.0.2 x64 (C) 2007-2015 hiyohiyo Crystal Dew World : ———————————————————————– * MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s] * KB = 1000 bytes, KiB = […]

Crucial m550 128GB as ZIL/SLOG (the ZIL really does limit your performance)


I got my hands on an m550 128GB drive (for around $75 with the recent pre-Thanksgiving/pre-Christmas discounts). Here are some comparisons between my old ZIL (the m500 128GB) and the new one: ZIL Throughput (sustained) MB/s none 195.6 m500 128GB 124.0 m550 128GB 265.9 Here are some snippets of zpool isotat output: No ZIL


Crucial m550 128GB SSD benchmark


Fresh out of the box:

Curiously, there are no firmware updates for this drive (nor the m500). Guess Crucial got it right the first time. Be the first to like. Like Unlike

Crucial m500 120GB as a ZFS slog


I re-did my benchmarks of my ZFS ZIL using a Crucial m500. The main reason I got this drive is that it has power-loss protection. And, it’s speeds are adequate to keep up with my gigabit Ethernet samba server. Here are the results. My first run was decent, but not stellar:

I didn’t do […]

Crucial m500 120GB benchmarks


The latest in my obsession with SSD’s. I jumped on a $70 deal at NewEgg. I bought it to use as a SLOG (ZIL) in my ZFS server, because of its write speeds and because of its power loss protection. I immediately updated the MU03 firmware to MU05. This may be with a SATA II […]

More ZIL/SLOG comparisons


Suspicious of my previous tests using iozone, I wrote a small program (that follows) to measure synchronous write speed. I tested this with and without an SLOG device, and then used a really fast Plextor M5 Pro 256GB SSD as the SLOG. I wanted to make sure that something could achieve the fast SLOG speed […]

SLOG tests on a 32GB Kingston SSD with iozone


This is a follow-up on my previous post. I ran iozone both with and without the [ccie]-e[/ccie] flag. This flag includes a sync/flush in the speed calculations. This flush should tell ZFS to commit the in-process data to disk, thus flushing it to the SLOG device (or to the on-disk ZIL). I ran 4 tests: […]

ZFS slog (ZIL) considerations


Running List of Alternatives 2015-08-11 It looks from this Anandtech article that the m550 does not have as strong power-loss protection as I originally thought. It protects the “lower pages” (least-significant bits) from corruption between page writes. But, it does not protect the DRAM buffer from losing data. 2014-07-07 The Transcend MTS600 line is capable […]

Kingston SV100S2/32 and SV100S2/64 benchmarks


Update 2014-04-06: Tests on the 64GB with a $10 Sabrent USB 3.0 Enclosure Added to the end The 64GB SSD has been my solid-state workhorse in my ZFS pool for a while. First, it was the L2ARC, then it was the ZIL. In fact, I used to have two, but I broke the connector off […]

Kingston SV100 64 GB (SV100S264G) Sequential Random Write Benchmark


This SSD caught my eye as a ZIL. I wonder how it compares to my previously benchmarked (a number of times) Kingston SV100 64 GB SSD. I decided to remove it from the ZIL and try it out. I wanted to make sure I exercise the sequential writes (which is all I really care about […]