>-----Original Message----- >From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of >Rainer Duffner >Sent: Monday, June 30, 2008 12:27 AM >To: CentOS mailing list >Subject: Re: settings up cheap a NAS / SAN server, is it possible? > >>>> Actually, the calculation is that it needs a GB of RAM for every >>>> TB of >> managed data. >> >> How do you reckon this? Ie, what's the basic assumption(s) for the >> statement? >> Parity calculations for stripes or what? I don't follow. >> >> I can't say I've ever heard any such like, so please do enlighten me! >> > > >It used to be written in the solarisinternals.com wiki - but I can't >seem to find it anymore. > >ZFS is a moving target, in some ways, so the requirements may have >changed or are no longer that simple. > >But it made sense in the early days, when SUN's thumper (X4500, 2*DC >Opteron, 48 disks, 16 GB RAM) more or less fit the requirements >perfectly. Gotcha', thx!
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