From: John Barham <jbarham@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] "FAWN: Fast array of wimpy nodes" (was: Plan 9 - the next 20 years)
Date: Sun, 19 Apr 2009 08:43:35 -0700 [thread overview]
Message-ID: <4f34febc0904190843u3337e22bn6472cbc26122fb7@mail.gmail.com> (raw)
In-Reply-To: <fa965e66dce71d8866032e19fa237674@quanstro.net>
>> Economics beats technology every time (e.g., x86/amd64 vs.
>> MIPS/Itanium, Ethernet vs. Infiniband, SATA vs. SCSI) so
>> don't try to fight it.
>
> if those examples prove your point, i'm not sure i agree.
>
> having just completed a combined-mode sata/sas driver,
> scsi vs ata is is fresh on my mind. i'll use it as an example.
To clarify, I meant that given X vs. Y, the cost benefits of X
eventually overwhelm the initial technical benefits of Y.
With SATA vs. SCSI in particular, I wasn't so much thinking of command
sets or physical connections but of providing cluster scale storage
(i.e., 10's or 100's of TB) where it's fast enough and reliable enough
but much cheaper to use commodity 7200 rpm SATA drives in RAID 5 than
"server grade" 10k or 15k rpm SCSI or SAS drives.
John
next prev parent reply other threads:[~2009-04-19 15:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-19 7:58 John Barham
2009-04-19 12:16 ` erik quanstrom
2009-04-19 15:43 ` John Barham [this message]
2009-04-19 16:52 ` erik quanstrom
2009-04-20 15:11 ` John Barham
2009-04-20 16:48 ` erik quanstrom
2009-04-19 14:27 ` Eric Van Hensbergen
2009-04-19 20:11 ` tlaronde
2009-04-20 15:48 ` ron minnich
2009-04-20 17:15 ` Wes Kussmaul
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