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Seagate Exos 7E8 ST4000NM0245 128MB 4TB vs. Seagate IronWolf ST4000VN008 64MB 4TB + 9

Noise level
23 - 26 dB
23 - 30 dB
22 - 27 dB
20 - 36 dB
23 - 24 dB
27 - 28 dB
34 dB
28 - 30 dB
23 - 26 dB
23 - 27 dB
Connection
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
Interface
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
Dimensions (WxHxD)
Depth
147 mm
146.99 mm
146.99 mm
146.99 mm
147 mm
147 mm
146.99 mm
147 mm
146.99 mm
140 mm
147 mm
Height
26.1 mm
26.11 mm
26.11 mm
26.1 mm
26.1 mm
26.1 mm
26.1 mm
26 mm
26.11 mm
26 mm
26.1 mm
Width
101.8 mm
101.85 mm
101.6 mm
101.8 mm
101.6 mm
101.6 mm
101.8 mm
101.8 mm
101.85 mm
101.85 mm
101.6 mm
Form factor
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
Features
ISE (Instant Secure Erase )
ERC (Error Recovery Control), NAS-optimized
NAS-optimized
ERC (Error Recovery Control), NAS-optimized
ERC (Error Recovery Control), NAS-optimized
ERC (Error Recovery Control), NAS-optimized
ERC (Error Recovery Control), NAS-optimized
NAS-optimized
ERC (Error Recovery Control), NAS-optimized
Cache size
128 MB
64 MB
128 MB
256 MB
512 MB
64 MB
128 MB
256 MB
256 MB
64 MB
64 MB
Hybrid disk (SSHD)
No
No
No
No
No
No
No
No
No
No
Recording technology
CMR
SMR
SMR
CMR
CMR
CMR
CMR
CMR
CMR
Release year
2016
2014
2016
2020
2012
2018
2019
2016
2013
Operational Power Consumption (min-max)
9 W
3.95 - 4.8 W
7.5 W
3.4 - 5.3 W
12.1 W
2.7 - 4.1 W
15.7 W
7.15 - 9.48 W
5 - 14.6 W
7.6 - 8.8 W
3.3 - 4.5 W
Power consumption (standby)
5 W
0.5 W
0.75 W
0.8 W
5.6 W
0.4 W
1 W
0.5 W
0.4 W
Advanced Format (AF)
512e
512e
4Kn
4Kn
512e
512e
512e
512e
512e
Internal transfer rate
263.38 MB/s
292 MB/s
190 MB/s
269 MB/s
147 MB/s
248 MB/s
250 MB/s
190 MB/s
150 MB/s
Mean Time Between Failure (MTBF)
2000000 h
1000000 h
1000000 h
2500000 h
1000000 h
1200000 h
1000000 h
1200000 h
1000000 h
1000000 h
Number of disks (platters)
3 ​
4 ​
4 ​
9 ​
3 ​
3 ​
7 ​
3 ​
4 ​
Rotational speed
7200 RPM
5900 RPM
5900 RPM
5400 RPM
7200 RPM
5400 RPM
7200 RPM
7200 RPM
7200 RPM
5900 RPM
5400 RPM
Storage capacity
4 TB
4 TB
5 TB
8 TB
18 TB
3 TB
4 TB
10 TB
16 TB
4 TB
4 TB
Price/TB
44.75 £/TB
22.75 £/TB
18 £/TB
27.72 £/TB
21.67 £/TB
28.25 £/TB
22 £/TB
27.31 £/TB
20 £/TB
22.5 £/TB
Unrecoverable Read Error (URE)
1 per 10^15
1 per 10^14
1 per 10^14
1 per 10^14
1 per 10^15
1 per 10^14
1 per 10^15
1 per 10^14
1 per 10^15
1 per 10^14
1 per 10^14