Performance Characteristics; Internal Drive Characteristics; Seek Performance Characteristics; Access Time - Seagate Savvio 10K Product Manual

4.0

Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Sav-
vio drives.
4.1

Internal drive characteristics

Drive capacity
Read/write data heads
Bytes per track
Bytes per surface
Tracks per surface (total)
Tracks per inch
Peak bits per inch
Internal data rate
Disc rotation speed
Avg rotational latency
4.2

Seek performance characteristics

See Section 9.4.1, "SAS physical interface" on page 56 and the SAS Interface Manual (part number
100293071) for additional timing details.
4.2.1

Access time

3 4
,
Average Typical
3,4
Single track Typical
3,4
Full stroke Typical
1. Execution time measured from receipt of the Command to the Response.
2. Assumes no errors and no sector has been relocated.
3. Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as
measured on a representative sample of drives.
4. Access time = controller overhead + average seek time and applies to all data transfer commands.
Access to data = access time + latency time.
Savvio SAS Product Manual, Rev. D
ST973401SS ST936701SS
73.4 36.7
4 2
360,000 360,000
18,387 18,387
51,052 51,052
105 105
660 660
506-753 506-753
10k 10k
3.0 3.0
Including controller overhead
(msec)
Read
4.2
0.40
8.3
Gbytes (formatted, rounded off value)
Bytes (average, rounded off values)
Mbytes (unformatted, rounded off value)
Tracks (user accessible)
KTPI
KBPI
Mbits/sec (variable with zone)
rpm
msec
1 2
,
Not including controller overhead
(msec)
Write Read
4.6 4.0
0.80 0.20
8.8 8.1
1,2
Write
4.4
0.60
8.6
11