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Comparison Seagate SkyHawk +Rescue ST4000VX016 4 TB
256/5900
vs Seagate SkyHawk ST4000VX007 4 TB
64/5900 CMR

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Seagate SkyHawk +Rescue ST4000VX016 4 TB 256/5900
Seagate SkyHawk ST4000VX007 4 TB 64/5900 CMR
Seagate SkyHawk +Rescue ST4000VX016 4 TB
256/5900
Seagate SkyHawk ST4000VX007 4 TB
64/5900 CMR
Compare prices 3Compare prices 1
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Placementbuilt-inbuilt-in
TypeHDDHDD
Featuresserverserver
Size4000 GB4000 GB
Form factor3.5 "3.5 "
ConnectionSATA3SATA3
Manufacturer's warranty3 years3 years
Technical specs
Cache memory256 MB64 MB
Record technologyCMRCMR
RPM5900 rpm5900 rpm
Data transfer rate180 MB/s190 MB/s
Plates2
Operation power consumption5.5 W
Standby power consumption0.25 W
MTBF1 M h1 M h
MTBF600 K300 K
General
Size147x102x20 mm147x102x26 mm
Weight490 g635 g
Added to E-Catalogseptember 2022september 2016

Cache memory

The amount of internal hard drive memory. This memory is an intermediate link between the high-speed computer RAM and the relatively slow mechanics responsible for reading and writing information on disk platters. In particular, the buffer is used to store the most frequently requested data from the disk — thus, the access time to them is reduced.
Technically, the size of the buffer affects the speed of the hard drive — the larger the buffer, the faster the drive. However, this influence is rather insignificant, and at the level of human perception, a significant difference in performance is noticeable only when the buffer size of the two drives differs many times — for example, 8 MB and 64 MB.

Data transfer rate

The speed of data transfer between the disk and client devices is determined by the type of drive, spindle speed, memory buffer size and connection connectors. The last parameter is the most important, since it is impossible to exceed the bandwidth of a particular interface.

Plates

The number of platters provided in the design of the hard drive.

Physically, a hard disk consists of one or more platters, on which information is recorded. Several plates can be provided in order to achieve the desired volume without increasing the form factor. At the same time, it is also necessary to install an appropriate number of reading heads in such a drive, which complicates the design, reduces its reliability, and increases the cost. Therefore, manufacturers choose the number of plates based on a reasonable compromise between these points, and for selection, this parameter is more of a reference than practically significant.

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).

MTBF

Guaranteed (minimum) number of hard drive on-off cycles after which it will remain operational. The higher this number, the more reliable the drive.
Seagate SkyHawk +Rescue often compared
Seagate SkyHawk often compared