4.2.3Generalized performance characteristics

Minimum sector interleave

1 to 1

 

 

 

Data buffer transfer rate to/from disc media (one 512-byte sector):

 

 

ST3500071FC

ST3400071FC

 

 

Minimum [3]*

33

35

MBytes/sec

 

Maximum [3]

66

66

MBytes/sec

 

Sustainable disc transfer rate:

 

 

 

 

 

ST3500071FC

ST3400071FC

 

 

Minimum [3]*

32

27

MBytes/sec

 

Maximum [3]

67

56

MBytes/sec

 

Fibre Channel Interface maximum instantaneous transfer rate

1 GHz

2 GHz

106 Mbytes/sec* per port (dual port = 212 Mbytes/ sec*)

212 Mbytes/sec* per port (dual port = 424 Mbytes/sec*)

Note. 1 Megabyte (MB) = 1,000,000 bytes.

Sector Sizes

 

Default is 512-byte data blocks.

 

Logical block sizes

 

Default is 512-byte data blocks

 

512, 520, 524, and 528 supported.

 

Read/write consecutive sectors on a track

Yes

Flaw reallocation performance impact (for flaws reallocated at format time

Negligible

using the spare sectors per sparing zone reallocation scheme.)

 

Overhead time for head switch in sequential mode

1.56 msec

 

Overhead time for one track cylinder switch in sequential mode

0.66 msec (typical)

Average rotational latency

4.17 msec

*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or from the host.

Notes for Section 4.2.

[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]Typical access times are measured under nominal conditions of temperature, voltage, and horizontal ori- entation as measured on a representative sample of drives.

[3]Assumes system ability to support the rates listed and no cable loss.

[4]Access to data = access time + latency time.

12

NL35 Series FC Product Manual, Rev. D

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Seagate ST3400071FC, ST3500071FC manual Generalized performance characteristics, GHz