Hi Jacek, This is better news. I'll note that I misspoke at the telecon: assuming 1 TB disks, our construction storage purchase called for 3600 disks--not that far off from the 4400 you site.
On Wed, 5 Jul 2006, Jacek Becla wrote: > BTW, all these numbers are for the usable disk space, we > should not forget about the RAID overheads, and disk spares. I may be showing my ignorance here, but wouldn't the increased capacity more than cover the RAID overheads? That is, if all usuable data is spread out over all disks in a, say, 5 disk RAID array, you still get the benefit of all five read heads (even though you lose capacity), yes? cheers, Ray _______________________________________________ LSST-data mailing list [email protected] http://www.lsstmail.org/mailman/listinfo/lsst-data
