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Comparison Hitachi Travelstar Z7K500.B 2.5" HTS725050B7E630 500 GB vs WD Black Performance Mobile 2.5" WD5000LPLX 500 GB
CMR

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Hitachi Travelstar Z7K500.B 2.5" HTS725050B7E630 500 GB
WD Black Performance Mobile 2.5" WD5000LPLX 500 GB CMR
Hitachi Travelstar Z7K500.B 2.5" HTS725050B7E630 500 GBWD Black Performance Mobile 2.5" WD5000LPLX 500 GB
CMR
from £105.47 
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Placementbuilt-inbuilt-in
TypeHDDHDD
FeaturespCpC
Size500 GB500 GB
Form factor2.5 "2.5 "
ConnectionSATA3SATA3
Manufacturer's warranty3 years5 years
Technical specs
Cache memory32 MB32 MB
Record technologyCMR
RPM7200 rpm7200 rpm
Average search time12 ms3 ms
Operation power consumption2 W2 W
Standby power consumption0.85 W0.85 W
Shockproof400 G400 G
Reading noise level25 dB25 dB
Standby mode noise level23 dB23 dB
MTBF600 K600 K
General
Size70x100x7 mm100x70x7 mm
Weight92 g92 g
Added to E-Catalogoctober 2017september 2015

Manufacturer's warranty

Manufacturer's warranty provided for this model.

In fact, this is the minimum service life promised by the manufacturer, subject to the rules of operation. Most often, the actual service life of the device is much longer than the guaranteed one.

Record technology

CMR(Conventional Magnetic Recording) is a classic method of magnetic recording, characterized by high data access speed. CMR hard drives are used in systems where it is important to provide high (as far as possible) data read/write speed. These are user computers, security video surveillance systems, etc. The main disadvantage of CMR hard drives is the high complexity of creating volume drives, which is reflected in their price. Additionally, HDDs with CMR technology are quite “gluttonous” in terms of power supply.

SMR(Shingled Magnetic Recording) — a promising technology for magnetic recording, which is called "tiled". SMR allows to achieve high data density, which in turn increases the capacity of memory drives and lowers their market value. SMR hard drives have slow rewriting speed, which makes such memory drives poorly suited for use in client computer systems. But they have proven themselves well when working as part of data processing centers, archives and similar systems for which low write / rewrite speed is not critical. However, some companies still produce SMR solutions for personal and even mobile systems. These HDDs use an optimized write/rewrite technology called Drive-Managed SMR (DM-SMR).

Average search time

The time it takes for the hard disk mechanics to find random requested data to read. For each specific case, the search time is different, as it depends on the location of the data on the surface of the disk and the position of the read head, therefore, the average value is indicated in the characteristics of hard drives. The lower the average seek time, the faster the disk works, all other things being equal.
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