Date: Sat, 27 Jan 2001 23:23:05 -0500 From: Mike Tancsa <mike@sentex.net> To: randy@Cloudfactory.ORG (Randy Primeaux) Cc: questions@freebsd.org Subject: Re: got RAID? Message-ID: <97777tgj0ssc71l2okvdtv46l15jnm3hq3@4ax.com> In-Reply-To: <SEN.980291905.912085380@news.sentex.net> References: <SEN.980291905.912085380@news.sentex.net>
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On 23 Jan 2001 18:18:25 -0500, in sentex.lists.freebsd.questions you =
wrote:
>what's the current preference for 4-STABLE ata RAID-1, hardware or =
software?
Depends what the application and budget is. For a low cost hardware RAID
solution take a look at www.3ware.com
Here are some rawio benchmarks I did a while back on a DAC960, MegaRAID =
466
etc...
newmail# rawio -a /dev/ad7e =20
Random read Sequential read Random write Sequential write
ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec
ad7e 1573.7 98 1348.4 82 1804.0 112 2845.7 174
da0e 1889.2 117 1935.6 118 1611.4 99 1736.5 106
ad4c 1548.5 96 1339.3 82 1800.4 111 2745.5 168
amrd0c 1806.4 112 13499.7 824 507.7 31 6790.2 414
vinum0 1369.0 85 7067.9 431 3254.2 199 6234.9 381 0
vinum0 2934.8 183 3863.0 236 2599.9 161 4421.8 270 1
vinum0 2525.8 157 10657.7 650 3278.1 204 14671.6 895 3
amrd0e 1240.8 77 9915.2 605 412.3 26 5869.0 358 4
mlxd0c 4552.7 283 6541.1 399 2139.7 133 8128.7 496 5
466 3730.3 230 23152.7 1413 2184.6 135 2418.9 148 6
atlas466 4907.3 306 21745.5 1327 2189.5 137 2165.9 132
0=3Data 66 on the same bus (master slave)
1=3Dquantum atlast IV da0 and da1 stripe
3=3Data 66 two masters
4=3DIBM SCSI drives
5=3DAtlast IV in RAID7 on Mylex
6=3Damrd 466, 4 drives, raid1+0
This is all off the same hardware (PIII 500, 256M). I didnt have a =
chance
to run the twed on rawio as I had to put this particular machine into
production
twed with 2 20 gig quantums in RAID1
-Per Char- --Block--- -Rewrite-- -Per Char- --Block---
--Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU =
/sec
%CPU
1000 24057 92.9 25016 49.6 12081 23.7 17598 94.8 25974 29.7 =
274.3
4.0
amr with all quantum
-Per Char- --Block--- -Rewrite-- -Per Char- --Block---
--Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU =
/sec
%CPU
1000 22728 94.8 25082 34.7 8699 19.1 14987 94.8 28450 31.1 =
264.3
3.2
ata66 (20gig IDE)
-------Sequential Output-------- ---Sequential Input--
--Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block---
--Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU =
/sec
%CPU
400 23516 96.0 26142 34.8 11667 21.6 14891 93.6 25651 19.9 =
294.4
2.1
Mike Tancsa (mdtancsa@sentex.net) =09
Sentex Communications Corp, =09
Waterloo, Ontario, Canada
"Given enough time, 100 monkeys on 100 routers=20
could setup a national IP network." (KDW2)
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