23 марта 2014 г. 16:53:38 CET, Bob Friesenhahn <[email protected]> пишет: >On Sun, 23 Mar 2014, Jim Klimov wrote: >>> >>> Regardless, I can not imagine why someone would want to replace 2TB >>> drives with 4TB drives. >> >> Limited number of disk bays? ;) > >That would be the only reason. The cost of replacing existing 2TB >drives with 4TB drives seems pretty high. Performace would only go >down, and if the physical block size increases, then storage >efficiency would decrease. Disk bays are not necessarily all that >expensive as long as there is a place nearby to put it. > >An existing disk chassis could be replaced with one which supports >more slots and the existing drives re-used as long as they are >physically compatible with the new chassis. > >Bob
Engineering is a matter of compromise. Something good for one usecase is not suitable for another. Consider the users of the popular HP Microserver series limited by 4-5 data disks. Consider the low-power rigs where more spindles might soon double the power draw (think of TCO over time vs. raw price of purchase). For a home nas peak performance might matter less than available volume, and even a "less efficient" storage in terms of slack space might be more efficient for mechanical performance by enforcing smaller fragmentation. So... YMMV ;) //Jim -- Typos courtesy of K-9 Mail on my Samsung Android _______________________________________________ OmniOS-discuss mailing list [email protected] http://lists.omniti.com/mailman/listinfo/omnios-discuss
