Seagate STM980215A Maxtor MobileMax PATA Product Manual - Page 21
Recording and interface technology, Physical characteristics, Seek time
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2.5 Recording and interface technology Technology Interface Recording density BPI (bits/inch typical) Track density TPI (tracks/inch typical) Areal density (Gbits/inch2 max) Spindle speed (RPM) (± 0.2%) I/O data-transfer rate (Mbytes/sec max) Interleave Cache buffer Specification Parallel ATA Up to 835k Up to 150k Up to 132 5,400 100 (Ultra DMA mode 5) 1:1 2 Mbytes (2,048 kbytes) 2.6 Physical characteristics Height (mm) (inches) Width (mm) (inches) Length (mm) (inches) Typical weight STM980215A STM960212A STM940215A 9.5 +/-0.2 0.374 +/-0.008 69.85 +/-0.25 2.750 +/-0.010 100.50 +/-0.25 3.957 +/-0.010 100 grams 0.220 pounds 2.7 Seek time Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications below are defined as follows: • Track-to-track seek time is an average of all possible single-track seeks in both directions. • Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead. Typical seek times (msec)* Track-to-track Average Full-stroke Average latency Read 1.0 11.0 22.0 5.56 Write 1.5 13.0 24.0 5.56 *Measured in performance mode Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as track-to-track and average), are expected to meet or exceed the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications. MobileMax Product Manual, Rev. A 11