5.2.1Seek time
Not including controller overhead (msec)1,2
|
| Read | Write |
Average | Typical | 3.5 | 4.0 |
Single Track | Typical | 0.2 | 0.4 |
Full Stroke | Typical | 6.8 | 7.5 |
1.Typical access times are measured under nominal conditions of temperature, volt- age, and horizontal orientation as measured on a representative sample of drives.
2.Access to data = access time + latency time.
5.2.2Format command execution time (minutes) [1]
| ST3300655LW | ST3146855LW | ST373455LW |
| ST3300655LC | ST3146855LC | ST373455LC |
Maximum (with verify) | 120 | 90 | 60 |
Maximum (no verify) | 60 | 45 | 30 |
5.2.3Generalized performance characteristics
Sustainable disc transfer rate: |
|
| |
Minimum [3] | 73 | Mbytes/sec |
|
Maximum [3] | 125 | Mbytes/sec |
|
SCSI interface data transfer rate (asynchronous): |
| ||
Maximum instantaneous one byte wide | 5.0 | MBytes/sec [3] | |
Maximum instantaneous two bytes wide | 10.0 | MBytes/sec [3] | |
Synchronous transfer rate |
|
| |
In low voltage differential (LVD) interface mode 5.0 to 320 | MBytes/sec | ||
Sector Sizes: |
|
|
|
Default | 512 byte user data blocks |
| |
Variable | 512 to 528 bytes per sector in even number of bytes per sector. | ||
| If n (number of bytes per sector) is odd, then | ||
Read/write consecutive sectors on a track | Yes |
Flaw reallocation performance impact (for flaws reallocated at format time using | Negligible |
the spare sectors per sparing zone reallocation scheme) |
|
Average rotational latency | 2.00 msec |
Notes for Section 5.2.
[1]Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to the Initiator (excluding connect/disconnect).
[2]Assumes no errors and no sector has been relocated.
[3]Assumes system ability to support the rates listed and no cable loss.
Cheetah 15K.5 SCSI Product Manual, Rev. J | 11 |