Messages in this thread | | | From | Andreas Dilger <> | Subject | Re: 64-bit block sizes on 32-bit systems | Date | Mon, 26 Mar 2001 12:09:04 -0700 (MST) |
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Matthew Wilcox writes: > On Mon, Mar 26, 2001 at 10:47:13AM -0700, Andreas Dilger wrote: > > What do you mean by problems 5 years down the road? The real issue is that > > this 32-bit block count limit affects composite devices like MD RAID and > > LVM today, not just individual disks. There have been several postings > > I have seen with people having a problem _today_ with a 2TB limit on > > devices. > > people who can afford 2TB of disc can afford to buy a 64-bit processor.
Get real. If you buy (cheapest) 40GB IDE disks, I can have 2TB for U$9200 (not including controllers). In 1 year it will be half, etc. I expect I will start moving my DVD collection to disk storage in an ia32 system once price/GB falls by 50% from current levels. This is just for home use, let alone what large companies want to do. I am fully expecting hard drive price/GB to keep falling at its current rate.
This whole "64-bit" fallacy has got to stop. First it was "anybody who needs files > 2GB should use a 64-bit CPU", wrong. Then it was "anybody who needs > 1GB RAM should use a 64-bit CPU", wrong. Now it is "anybody who needs > 2TB disk should use a 64-bit CPU", soon to be wrong. I don't think the millions of 32-bit systems will disappear overnight, or even in 10 years, yet we already have single IDE disks > 100GB, and in 2 or 3 years we will have single IDE disks > 1TB that people will want to use in their 32-bit systems.
Cheers, Andreas -- Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto, \ would they cancel out, leaving him still hungry?" http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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