Verify the average latency rate cited in the disk specification of Figure 7.15. Why is the calculation
Question:
Verify the average latency rate cited in the disk specification of Figure 7.15. Why is the calculation divided by 2?
Figure 7.15.
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CONFIGURATION: Formatted capacity, TB Integrated controller Encoding method Buffer size Platters Data surfaces Tracks per surface Track density Recording density Bytes per sector Sectors per Track PHYSICAL: Height Length Width Weight Temperature (°C) Operating Nonoperating/storage Relative humidity Acoustic noise 10 SATA EPAML 256MB 8 16 16,383 190,000 pl 1,462Kbpl 512 63 20.1mm 146.0mm 101.6mm 720g 5°C to 55°C -40°C to 71°C 5% to 95% 20dBA, idle Spin-up Read/write RELIABILITY AND MAINTENANCE: MTTF Start/stop cycles Design lite Data errors Idle Standby Sleep (nonrecoverable) PERFORMANCE: Seek times Track to track Read Write Average Read Write Average latency Rotational speed (+/-0.20%) Data transfer rate: Start time POWER REQUIREMENTS Power Mode +5.0VDC 2W 5.3W 4.6W 0.94W 0.94W (0 to drive ready) 1,000,000 hours 50,000 5 years (minimum) <1 per 10¹5 bits read 0.3ms 0.5ms Supported (Gb/s) Max sustained (MB/s) 210 4.5ms 5.0ms 4.17ms 7200rpm 6.0/3.0/1.5 9 sec
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The average latency rate or rotational latency in the disk specification of Figure 715 is given as 4...View the full answer
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Related Book For
Essentials Of Computer Organization And Architecture
ISBN: 9781284259438
6th Edition
Authors: Linda Null, Julia Labur
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