Format Command Execution Time (Minutes); General Performance Characteristics; Start/Stop Time; Prefetch/Multi-Segmented Cache Control - Seagate SAVVIO 10K.5 FC ST9300605FC Product Manual

5.2.2

Format command execution time (minutes)

Maximum (with verify)
Maximum (without verify)
5.2.3

General performance characteristics

Sustainable disk transfer rate*:
Data buffer to/from disc media (one 512-byte logical block)*
Sustained transfer rate
Fibre Channel Interface maximum instantaneous transfer rate
Logical block sizes
Default is 512-byte data blocks
Sector sizes variable to 512, 520, 524 and 528 bytes.
Read/write consecutive sectors on a track
Flaw reallocation performance impact (for flaws reallocated at format time
using the spare sectors per sparing zone reallocation scheme.)
*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or
from the host.
** MiB/s x 1.048 = MB/s
5.3

Start/stop time

If the Motor Start option is disabled, the drive becomes ready within 20 seconds after DC power is applied. If a
recoverable error condition is detected during the start sequence, the drive executes a recovery procedure and
the time to become ready may exceed 20 seconds. During spin up to ready time, the drive responds to some
commands over the FC interface in less than 3 seconds after application of power. Stop time is 30 seconds
(maximum) from removal of DC power.
If the Motor Start option is enabled, the internal controller accepts the commands listed in the Fibre Channel
Interface Manual less than 3 seconds after DC power has been applied. After the Motor Start command has
been received, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery
procedure). The Motor Start command can also be used to command the drive to stop the spindle.
There is no power control switch on the drive.
5.4

Prefetch/multi-segmented cache control

The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many
cases can enhance system performance. Cache refers to the drive buffer storage space when it is used in
cache operations. To select this feature, the host sends the Mode Select command with the proper values in
the applicable bytes in page 08h. Prefetch and cache operations are independent features from the standpoint
that each is enabled and disabled independently using the Mode Select command; however, in actual opera-
tion, the prefetch feature overlaps cache operation somewhat as described in sections 5.5.1 and 5.5.2.
All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this
drive family are given in Section 10.3.2
Savvio 10K.5 FC Product Manual, Rev. D
ST9900805FC ST9600205FC
234
116
ST9450405FC
156 117
75 58
1.00 to 1.91 Gb/s
89 to 160 Mib/s **
93 to 168 MB/s
800MB/s* per port
(dual port = 1600MB/s*)
Yes
Negligible
ST9300605FC
78
36
11