3 ms·
But do they actively move around files to spread bandwidth after the initial write? If they don't, and if I am right that older files tend to be rarely accessed
by cm2187 6y ago
But do they actively move around files to spread bandwidth after the initial write? If they don't, and if I am right that older files tend to be rarely accessed, I would expect entire disks to become unaccessed over time.
- jeffbee 6y agoIf they allow that to happen, they are leaving a ton of money on the table. It's typical in the industry to move hot and cold files around to take advantage of the IOPS you already paid for. See, for example, pages 22-23 of http://www.pdsw.org/pdsw-discs17/slides/PDSW-DISCS-Google-Keynote.pdf http://www.pdsw.org/pdsw-discs17/slides/PDSW-DISCS-Google-Ke...