Seagate ST11200N - Format Drive Command Execution Time; Read Data Command Execution Time; Write Data Command Execution Time; Generalized Performance Characteristics

Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D
______________________________________________________________________________________
5.2.2 Format drive command execution time (minutes) [1]
ST11200 ST1980 ST1950 ST1830
Maximum (with verify) 30 min 28 min TBD TBD
Maximum (no verify) 20 min 18 min TBD TBD
* [ ] All notes are listed in Section 5.3.1.
** With disconnect enabled and Read Look Ahead cache disabled.
5.2.3 Read data command execution time [4]*
(512 byte sector size, with disconnect enabled and read look ahead cache disabled)
latency time is included.
a. From CDB reception to the drive request for the first data byte to be transferred to the Host
ST11200 ST1980 ST1950 ST1830
1. Typical (Zero Stroke Seek) [3] 7.2 ms 7.2 ms TBD TBD
2. Typical (Average Seek) [3] 17.5 ms 16.8 ms TBD TBD
3. Maximum (Full Stroke Seek) [2] 36.1 ms 35.1 ms TBD TBD
b. Single Sector Read and Transfer of data to Host (time from receipt of last byte of the CDB to the request
for a status byte transfer to Host) [7].
ST11200 ST1980 ST1950 ST1830
1. Typical (Zero Stroke Seek)[3] 7.3 7.3 ms TBD TBD
2. Typical (Average Seek)[3] 17.6 ms 16.9 ms TBD TBD
3. Maximum (Full Stroke Seek)[2] 36.2 ms 35.2 ms TBD TBD
5.2.4 Write data command execution time [4]
(512 byte sector size, with disconnect disabled and read look ahead disabled) latency
time is included.
a. From CDB reception to the request for the first byte of write data from the Host.
1. Typical 1.5 ms 2. Maximum 1.8 ms
b. Single Sector Write and Data Transfer from Host [6] [7]
(Time from receipt of the last byte of the CDB to the request for a completion status transfer to the Host)
ST11200 ST1980 ST1950 ST1830
1. Typical (Zero Stroke Seek)[3] 7.0 ms 7.0 ms TBD TBD
2. Typical (Average Seek)[3] 18.2 ms 17.6 ms TBD TBD
3. Maximum (Full Stroke Seek)[2] 38.2 ms 37.2 ms TBD TBD
*[ ] All notes are listed in Section 5.3.1.
5.3 Generalized performance characteristics
Minimum Sector Interleave 1 to 1
Data Buffer To/From Disc Media
Data transfer rate (< 1 sector) - 512 Byte Sector
10