Date: Wed, 12 Jan 2005 18:38:19 -0500 From: Chuck Swiger <cswiger@mac.com> To: Gregor Mosheh <stigmata_blackangel@yahoo.com> Cc: freebsd-questions@freebsd.org Subject: Re: server replication? Message-ID: <41E5B4EB.8010301@mac.com> In-Reply-To: <20050112232420.45947.qmail@web53803.mail.yahoo.com> References: <20050112232420.45947.qmail@web53803.mail.yahoo.com>
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Gregor Mosheh wrote: > For starters, how does such a solution work > conceptually? The possibility of load-balancing > appliances has been suggested; how does this work with > user databases and uploaded files? Our services are > primarily web-based and do involve a significant > amount of users uploading files, and database > (postgres) work. For databases, you'll need to look into a RDMBS which supports parallelism and distributed transaction processing. Oracle will sell you something, albeit for a hefty price. :-) For files, people using redundant multipath topology over fibre-channel, which allows several machines to access the same filestorage safely in parallel. I'm not sure there's much of the available for FreeBSD, but Apple just released their Xsan product based off the Xserve RAID boxes and various third-party fibre-channel switches. -- -Chuck
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