Performance Characteristics; Internal Drive Characteristics; Format Command Execution Time For 512-Byte Sectors (Minutes); General Performance Characteristics - Seagate Constellation ST4000NM0023 Product Manual
Constellation es.3 sas standard models,sed (fips 140-2) models,self-encrypting drive models
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Also See for Constellation ST4000NM0023:
- Product manual (88 pages) ,
- Product manual (56 pages)
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4.0
P
ERFORMANCE CHARACTERISTICS
This section provides detailed information concerning performance-related characteristics and features of Constellation ES.3 drives.
4.1
I
NTERNAL DRIVE CHARACTERISTICS
ST4000NM0023
ST4000NM0043
ST4000NM0063
Drive capacity
4TB
Read/write data heads
10
Bytes/track
1,668,096
Bytes/surface
400,000
Tracks/surface (total)
320,800
Tracks/in
305,000
Peak bits/in
1,904,000
Areal density
578
Internal data rate
2210
Disk rotation speed
7200
Avg rotational latency
4.16
4.1.1
Format command execution time for 512-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 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.
C
ES.3 SAS P
ONSTELLATION
ST3000NM0023
ST3000NM0043
ST3000NM0063
3TB
8
4TB models
3TB models
917
455
M
, R
. C
RODUCT
ANUAL
EV
ST2000NM0023
ST1000NM0023
ST2000NM0043
ST1000NM0043
ST2000NM0063
ST1000NM0063
2TB
1TB (fomatted, rounded off value)
5
3
Bytes (average, rounded off values)
MB (unfomatted, rounded off values)
Tracks (user accessible)
TPI (average)
BPI
Gb/in2
Mb/s (max)
RPM
ms
2TB models
693
456
347
228
1 to 1
2.21 Gb/s
83 to 175 MB/s **
600MB/s* per port
(dual port = 1200MB/s*)
Yes
Negligible
4.16ms
1TB models
263
132
9
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