Date: Thu, 5 Mar 1998 12:59:11 -0600 From: Karl Denninger <karl@mcs.net> To: Niall Smart <njs3@doc.ic.ac.uk> Cc: hackers@FreeBSD.ORG Subject: Re: SCSI Bus redundancy... Message-ID: <19980305125911.15755@mcs.net> In-Reply-To: <E0yAfoG-0000sB-00@oak65.doc.ic.ac.uk>; from Niall Smart on Thu, Mar 05, 1998 at 06:56:00PM %2B0000 References: <karl@mcs.net> <E0yAfoG-0000sB-00@oak65.doc.ic.ac.uk>
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On Thu, Mar 05, 1998 at 06:56:00PM +0000, Niall Smart wrote: > On Mar 5, 12:09pm, Karl Denninger wrote: > } Subject: Re: SCSI Bus redundancy... > > > > 1) The devices on the RAID arrays are high-availability required machines > > (ie: primary NFS fileservers, News service, and the authentication > > database machines). NONE OF THESE can afford to be down or crash. > > "NONE OF THESE"? Ever heard of Stratus Computer Corporation? > > Niall Actually, if I didn't care about the cost, Tandem makes some very good fault-tolerant machines. Of course the problem is "if you don't care about the cost". Reality is that building something 100% fail-proof is just not economically justified in the ISP business. In other lines of work, it is. However, being able to swap a CPU in 5 minutes (the only non-redundant component) is one thing. Having persistent OS crashes is entirely different. -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly to FULL DS-3 Service | NEW! K56Flex support on ALL modems Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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