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Cheetah 36ES Product Manual, Rev. A
4.0
Performance characteristics
4.1
Internal drive characteristics (transparent to user)
Drive capacity
Read/write heads
Bytes/track
Bytes/surface
Tracks/surface (total)
Tracks/inch
Peak bits/inch
Internal data rate
Disc rotational speed
Average rotational latency
4.2
SCSI performance characteristics (visible to user)
The values given in Section 4.2.1 apply to all models of the Cheetah 36ES family unless otherwise specified.
Refer to Section 9.10 and to the SCSI Interface Product Manual, part number 75789509, for additional timing
details.
4.2.1
Access time [5]
Average—Typical [2]
Single Track—Typical [2]
Full Stroke—Typical [2]
4.2.2
Format command execution time (minutes) [1]
Maximum (with verify)
Maximum (no verify)
4.2.3
Generalized performance characteristics
Minimum sector interleave
Data buffer transfer rate to/from disc media (one contiguous 512-byte sector):
Minimum [3]
Average [3]
Maximum [3]
Data buffer transfer rate to/from disc media (<1 track)
Minimum [3]
Average [3]
Maximum [3]
ST336706
ST318406
36.704
18.352
4
2
348,900
348,900
9,176
9,176
26,302
26,302
38,000
38,000
460.00
460.00
530-674
530-674
10,028
10,028
2.99
2.99
Including controller overhead
(without disconnect) [1] [3]
Drive level
Read
Write
msec
5.4
6.4
0.7
1.1
10.2
11.2
ST336706
ST318406
25
12.5
13
6.5
1 to 1
52 MByte/sec
62 MByte/sec
68 MByte/sec
48 MByte/sec
58 MByte/sec
62 MByte/sec
GByte (formatted, rounded off values)
Bytes (average, rounded off values)
Mbytes (unformatted, rounded off values)
Tracks (user accessible)
TPI
KBPI
Mbits/sec (variable with zone)
r/min (+0.5%)
msec
Not including controller overhead
(without disconnect) [1] [3]
Drive level
Read
Write
msec
5.2
6.2
0.5
0.9
10.0
11.0
9
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