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Comparison WD Black Performance Mobile 2.5" WD5000LPLX 500 GB
CMR
vs Hitachi Travelstar Z7K500 2.5" HTS725050A7E630 500 GB

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WD Black Performance Mobile 2.5" WD5000LPLX 500 GB CMR
Hitachi Travelstar Z7K500 2.5" HTS725050A7E630 500 GB
WD Black Performance Mobile 2.5" WD5000LPLX 500 GB
CMR
Hitachi Travelstar Z7K500 2.5" HTS725050A7E630 500 GB
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Placementbuilt-inbuilt-in
TypeHDDHDD
FeaturespCpC
Size500 GB500 GB
Form factor2.5 "2.5 "
ConnectionSATA3SATA3
Manufacturer's warranty5 years3 years
Technical specs
Cache memory32 MB32 MB
Record technologyCMR
RPM7200 rpm7200 rpm
Average search time3 ms13 ms
Operation power consumption2 W1.8 W
Standby power consumption0.85 W0.2 W
Shockproof400 G400 G
Reading noise level25 dB24 dB
Standby mode noise level23 dB23 dB
MTBF600 K600 K
General
Size100x70x7 mm
Weight92 g
Added to E-Catalogseptember 2015december 2012

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.

Operation power consumption

The amount of power consumed by the disk when reading and writing information. In fact, this is the peak power consumption, it is in these modes that the drive consumes the most energy.

HDD power consumption data is needed primarily to calculate the overall system power consumption and power supply requirements for the system. In addition, for laptops that are planned to be used often "in isolation from outlets", it is advisable to choose more economical drives.

Standby power consumption

The amount of power consumed by the disk "idle". In the on state, the disk platters rotate regardless of whether information is being written or read or not — maintaining this rotation takes the energy consumed while waiting.

The lower the power consumption while waiting, the more economical the disk is, the less energy it consumes. At the same time, we note that in fact this parameter is relevant mainly when choosing a drive for a laptop, when energy efficiency is crucial. For stationary PCs, “idle” power consumption does not play a special role, and when calculating the requirements for a power supply, it is necessary to take into account not this indicator, but the power consumption during operation (see above).

Reading noise level

The level of noise produced by the disk when reading and/or writing information. The source of sound in this case is the moving plates of the disk, as well as the mechanics that control the reading heads. The lower the noise level, the more comfortable the use of the device. The maximum noise produced by modern hard drives during operation is about 50 dB — this is comparable to the sound background in an average office.
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