I/O Devices (cont)
Solid State Disk (SSD) characteristics:
- high capacity (GB), high cost, reading faster than writing
- pages 512B..4KB, blocks 32..128 pages, R/W page-at-a-time
- pages updated by erase then write, limit on #updates
- avg read time 11×10-6 sec, avg write time 15×10-6 sec
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