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4.0
P
ERFORMANCE CHARACTERISTICS
This section provides detailed information concerning performance-related characteristics and features of Enterprise Capacity 3.5 HDD v4
drives.
4.1
I
NTERNAL DRIVE CHARACTERISTICS
Drive capacity
6TB models
Read/write data heads
12
Bytes/track
1,470,464
Bytes/surface
500,000
Tracks/surface (total)
337,400
Tracks/in
320,000
Peak bits/in
2,011,000
Areal density
643
Internal data rate
2317
Disk rotation speed
7200
Avg rotational latency
4.16
4.1.1
Format command execution time
5xxE-byte sectors (minutes)
Maximum (with verify)
Maximum (without verify)
4KN-byte sectors (minutes)
Maximum (with verify)
Maximum (without verify)
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).
When changing sector sizes, the format times shown above may need to be increased by 30 minutes.
4.1.2
General performance characteristics
Minimum sector interleave
Maximum Internal data rate*
Sustained transfer rate
SAS Interface maximum instantaneous transfer rate
Logical block sizes
512 (default), 520, 524 or 528.
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.)
Average rotational latency
*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
S
E
C
EAGATE
NTERPRISE
APACITY
4TB models
2TB models
8
6TB models
4TB models
1168.83
926.28
596.17
407.33
6TB models
4TB models
1185.62
791.38
597.35
411.48
3.5 HDD
4 SAS P
V
RODUCT
(formatted, rounded off value)
4
Bytes (average, rounded off values)
MB (unformatted, rounded off values)
Tracks (user accessible)
TPI (average)
BPI
2
Gb/in
Mb/s (max)
RPM
ms
2TB models
384.17
193.55
2TB models
393.65
200.73
1 to 1
2.32 Gb/s
100 to 216 MiB/s **
1200MB/s* per port
(dual port = 2400MB/s*)
Yes
Negligible
4.16ms
M
, R
. A
ANUAL
EV
10
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