Carson Gaspar wrote:
I just found an 8 GB SATA Zeus (Z4S28I) for £83.35 (~US$127) shipped to
California. That should be more than large enough for my ZIL @home,
based on zilstat.
The web site says EOL, limited to current stock.
http://www.dpieshop.com/stec-zeus-z4s28i-8gb-25-sata-ssd-solid-state-drive-industrial-temp-p-410.html
Of course this seems _way_ too good to be true, but I decided to take
the risk.
Following up, I just added the STEC Zeus to my pool. The SSD is of the
motherboard ICH7 AHCI port, the rust is all on an LSI 1068E. Anyone know
how these numbers stack up against an X25-E? It certainly was a great
deal for the price!
NAME STATE READ WRITE CKSUM
vault ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
c7t9d0 ONLINE 0 0 0
c7t12d0 ONLINE 0 0 0
c7t11d0 ONLINE 0 0 0
c7t13d0 ONLINE 0 0 0
c7t14d0 ONLINE 0 0 0
c7t8d0 ONLINE 0 0 0
c7t10d0 ONLINE 0 0 0
c7t15d0 ONLINE 0 0 0
logs
c9t3d0 ONLINE 0 0 0
Before (Mac OS 10.6.3 NFS client over GigE, local subnet, source file in
RAM):
carson:arthas 0 $ time tar jxf /Volumes/RamDisk/gcc-4.4.3.tar.bz2
real 92m33.698s
user 0m20.291s
sys 0m37.978s
After:
carson:arthas 130 $ time tar jxf /Volumes/RamDisk/gcc-4.4.3.tar.bz2
real 6m52.888s
user 0m18.159s
sys 0m33.909s
Some data from a 5 second interval iostat of the SSD during the tar:
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 747.8 0.0 3055.3 0.0 0.4 0.0 0.5 1 36 c9t3d0
0.0 743.5 0.0 3010.9 0.0 0.4 0.0 0.5 0 35 c9t3d0
0.0 745.8 0.0 3087.3 0.0 0.4 0.0 0.5 1 36 c9t3d0
0.0 744.2 0.0 3088.8 0.0 0.4 0.0 0.5 1 36 c9t3d0
0.0 739.4 0.0 3166.4 0.0 0.4 0.0 0.5 1 36 c9t3d0
And from zilstat -p vault txg:
txg N-Bytes N-Bytes/s N-Max-Rate B-Bytes B-Bytes/s
B-Max-Rate ops <=4kB 4-32kB >=32kB
744952 7525472 250849 438848 94437376 3147912
3653632 21961 21443 503 15
744953 8185360 272845 662632 94330880 3144362
3899392 21761 21440 267 54
744954 9337848 311261 2596120 93069312 3102310
6045696 21502 21275 186 41
744955 6789952 226331 416336 91144192 3038139
3440640 21838 21665 157 16
744956 51461280 1715376 10132760 155000832 5166694
15319040 19621 15813 3290 518
744957 100863840 3362128 7033128 245440512 8181350
13565952 15589 10968 2720 1901
744958 38813592 1293786 5668728 136380416 4546013
11210752 19155 17173 1407 575
744959 46950168 1514521 5705184 150495232 4854684
10326016 18784 15418 2740 626
744960 35539504 1184650 2764008 137379840 4579328
7311360 19919 16287 3044 588
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