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Seagate Savvio 15K.2 ST9146752SS 16MB 146GB vs. Seagate IronWolf ST4000VN008 64MB 4TB + 9

Noise level
23 - 26 dB
28 - 32 dB
28 - 34 dB
26 - 28 dB
22 - 27 dB
23 - 24 dB
22 - 27 dB
22 - 27 dB
Connection
SAS
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
Interface
SAS 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
100 mm
146.99 mm
146.99 mm
147 mm
146.99 mm
146.99 mm
147 mm
146.99 mm
147 mm
147 mm
146.99 mm
Height
14.5 mm
26.11 mm
26.11 mm
26.1 mm
20.2 mm
20.17 mm
26.1 mm
26.11 mm
20.2 mm
26.1 mm
26.1 mm
Width
70.1 mm
101.85 mm
101.85 mm
101.8 mm
101.85 mm
101.6 mm
101.6 mm
101.6 mm
101.6 mm
101.6 mm
101.8 mm
Form factor
2.5 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
SED/FDE (disk encryption)
ERC (Error Recovery Control), NAS-optimized
ERC (Error Recovery Control), NAS-optimized
NAS-optimized
NAS-optimized
ERC (Error Recovery Control), NAS-optimized
NAS-optimized
NAS-optimized
Cache size
16 MB
64 MB
256 MB
256 MB
256 MB
256 MB
64 MB
128 MB
64 MB
256 MB
256 MB
Hybrid disk (SSHD)
No
No
No
No
No
No
No
No
No
No
Recording technology
CMR
CMR
CMR
SMR
SMR
CMR
CMR
CMR
CMR
SMR
Release year
2010
2016
2019
2017
2017
2012
2016
2016
Operational Power Consumption (min-max)
4.1 W
3.95 - 4.8 W
7.6 - 8.8 W
6.3 - 10 W
3.9 - 5.1 W
0.25 - 3.7 W
2.7 - 4.1 W
4.6 - 5.3 W
15.7 W
3.4 - 5.3 W
Power consumption (standby)
0.5 W
0.6 W
5 W
0.3 W
0.25 W
0.4 W
0.4 W
0.94 W
0.8 W
0.8 W
Advanced Format (AF)
512e
512e
4Kn
512e
512e
512e
4Kn
Internal transfer rate
263.38 MB/s
200 MB/s
261 MB/s
220 MB/s
190 MB/s
147 MB/s
210 MB/s
190 MB/s
Mean Time Between Failure (MTBF)
1600000 h
1000000 h
1200000 h
2500000 h
1000000 h
1000000 h
1000000 h
750000 h
1000000 h
1000000 h
Number of disks (platters)
2 ​
3 ​
5 ​
9 ​
1 ​
2 ​
3 ​
1 ​
4 ​
Rotational speed
15000 RPM
5900 RPM
7200 RPM
7200 RPM
7200 RPM
5400 RPM
5400 RPM
5400 RPM
7200 RPM
7200 RPM
5400 RPM
Storage capacity
0.15 TB
4 TB
8 TB
16 TB
2 TB
4 TB
3 TB
4 TB
1 TB
8 TB
8 TB
Price/TB
433.33 £/TB
21.25 £/TB
21.25 £/TB
17.31 £/TB
21 £/TB
18.5 £/TB
21.67 £/TB
22.25 £/TB
30 £/TB
26.25 £/TB
17.13 £/TB
Unrecoverable Read Error (URE)
1 per 10^16
1 per 10^14
1 per 10^15
1 per 10^15
1 per 10^15
1 per 10^14
1 per 10^14
1 per 10^14
1 per 10^14