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 : http://crystalmark.info/ ———————————————————————– * MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s] * KB = 1000 bytes, KiB = […]
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
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2014-11-25 22:07:33,635 - 16777216000 bytes written in 85.77223777770996 seconds 195.60193874713124 MB/s |
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Fresh out of the box:
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----------------------------------------------------------------------- CrystalDiskMark 3.0.2 x64 (C) 2007-2013 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 501.551 MB/s Sequential Write : 372.055 MB/s Random Read 512KB : 460.606 MB/s Random Write 512KB : 371.946 MB/s Random Read 4KB (QD=1) : 31.815 MB/s [ 7767.2 IOPS] Random Write 4KB (QD=1) : 76.588 MB/s [ 18698.2 IOPS] Random Read 4KB (QD=32) : 370.200 MB/s [ 90380.9 IOPS] Random Write 4KB (QD=32) : 264.007 MB/s [ 64454.8 IOPS] Test : 1000 MB [E: 0.1% (0.1/119.1 GB)] (x5) Date : 2014/11/23 10:47:23 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) |
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
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:
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2014-04-11 23:32:15,079 - 16777216000 bytes written in 192.07929635047913 seconds 87.345259581685 MB/s |
I didn’t do […]
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 […]
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 […]
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: […]
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 […]
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 […]
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 […]
