Seagate Elite 9, Product Manual

Page: 22 / 82

12 Elite 9 Product Manual, Rev. C
Start
Has
10 min.
timer
expired?
Set
10 minute
timer
Yes
No
Yes
A
Is
SCSI
command in
progress?
No
Complete
Command
Seek to
TCAL cyl
and select
head zero
TCAL
head
Has
target
received a SCSI
command?
No
Yes
All
heads
calibrated?
Yes
A
All
heads
calibrated?
No
Yes
Select
next
head
No
Has
target
received a SCSI
command?
Yes
No
Target
completes
SCSI
command
Seek to
TCAL cyl
and select
next head
Figure 3. OEM interruptible thermal calibration implementation
5.2.1 Seek time
Drive including
controller overhead
Drive level (msec) without disconnect* (msec)
read write read write
Avg typical** 11 12 12.5 13.5
Single track typ** 0.9 1.7 2.4 3.2
Full stroke typ** 23 24 24.5 25.5
* Measured from the start of the first sector transfer to or from the host.
** Typical seek values are measured under nominal conditions of tempera-
ture, voltage, and horizontal orientation on a representative sample of
drives.
5.2.2 Format drive command execution time
for
≥≥≥≥≥
512-byte sectors
Maximum (with verify) 4 hours
Maximum (without verify) 2 hours