Sunday, 11 September 2016

Seagate 4TB Desktop HDD.15 test

Seagate 4TB Desktop HDD.15 test

With Desktop HDD.15, Seagate is the only one to offer a hard drive with a capacity of 4 TB using only 4 plates. What is this new album marks the return of discs "Green" Seagate? At the launch of the Barracuda 7200.14 in November 2011, Seagate announced a simplification of its range of disk 3 "1/2 for desktop PCs. Disks Finis 5900 rpm Barracuda Green range (and previously Barracuda LP), a clean sweep was made ​​for "the Power of one", namely a unique range of 7200 rpm. This strategy ended recently with the launch in February of a new drive running at 5900 rpm, the 4TB Desktop HDD.15 ST4000DM000. in itself the capacity of 4 TB is not a first. from September 2011 Seagate and Hitachi have launched external drives such a capability incorporating discs 3.5 "composed of 5 800 GB platters. the floods in Thailand are then passed by and from 4 TB disks are struggling to democratize lack of affordable disks. This is now the case with the Desktop is HDD.15 the first to call on 1TB platters which simplifies design since it is composed of 4 of them. While they operate at 7200 rpm Barracuda 7200.14 on, their speed is only 5900 rpm on the disc. Compared to 7200.14 a 3TB (ST3000DM001), the Desktop HDD.15 4TB (ST4000DM000) offers the following developments towards its official features: - The maximum flow goes from 210 to 180 MB / s - The average flow Password 156-146 MB / s - The total access time password 12.66ms 13.6ms to read - The total access time to pass 13.66ms 14.6ms write - noise rotation from 24 to 23 dB - the noise during access from 26 to 28 dB - consumption at start of 2.5A to 2A - responsible consumption of 8W to 7.5W - the consumption of 5.8W to 5W rest Since the density is equivalent, the logically flow down while the total access time, which includes the same access time but also latency rising, rising. Disk consumption is declining despite the increasing number of trays while acoustic side there was a decline in the rotation noise and oddly an increase in the access.

The disc
The Desktop HDD.15 4TB used for this test is from the trade. Manufactured in April 2013 in Thailand, it features the CC52 firmware. On balance it shows 615 grams, as 7200.14 3TB. So it seems that the weight of extra tray is offset by a lighter metal base.

Seagate 4TB Desktop HDD.15 test


The PCB incorporates a usual set Seagate composed of a main controller LSI, a motor controller in Smooth and 64MB of DRAM Hynix origin here.

Seagate 4TB Desktop HDD.15 test

Firmware HDD.15 4TB Desktop is not really different from a 7200.14 in functionality. SMART Command Transport Error Recovery Control is not configurable, as is the Automatic Acoustic Management and ATA Streaming commands are not available. The Advanced Power Management is available against it and disables the parking heads who would like. This occurs by default after 30 seconds of inactivity and consumption dropped by 6.2 watts to 3.9 watts.

We used the same protocol as for disk 3 TB to assess HDD.15 4TB Desktop. We compare it to other hard drives "Green" with a capacity of 3 TB, as well as Seagate 7200.14 3TB, and add to the practical test an SSD, the Crucial M4 128GB.

Seagate 4TB Desktop HDD.15 test

      
As for the rates we can see that the ST4000DM000 is the fastest disk running at speeds below 7200 rpm as it is at 131 MB / s on average, against 120 MB / s for the Toshiba drive. It is of course below a disc such as 7200.14 which is 152 MB / s. This is felt on reading and writing files to set as the Seagate dominates the competition except on small files or it is at a comparable level in reading and writing less. The access time is by against not the strong point of the disc with 19.3 ms measured. It is 2.5 ms more than the 7200.14, a larger increase than announced. It is not up to the WD Green, but better than the Toshiba and WD Red models. This, however, feels a lot in practice since it is the disc that suffers most from a simultaneous launch of applications. Overall in application it is fighting for last place with the WD Red. Disk Heating is reduced by against and despite additional top it is very close to other 5400/5900 rpm drives. It's the same for consumption, two areas where it delivers results logically superior goods at 7200.14. Sound side against the 4th tray means and is above the 3 TB "Green". The access also heard despite their slowness, they stand out more compared to the noise of rotation than those of Toshiba and WD Red drives, but not to the level of a WD Green. Compared to Seagate ST3000DM001, they agree less but notes that they are a little sharper and not necessarily pleasant.

Our opinion
With Desktop HDD.15, Seagate is first to make it really interesting the 4TB. Interesting in terms of price first, because even if the price per GB is higher than that of a 3 TB disk, it is much more affordable than other drives offering such a capability. Interesting in terms of features as well, since it is the only model using only 4 plates, a good thing knowing that there's more he sets and overall more discs heat, consume, are noisy and they are less reliable. If the access time and the pure application performance are down, the flow is very good for a disc said "Green" and ST4000DM000 consumes neither really heats up more than 3 TB which is a nice surprise. We regret that access by cons are not quieter. That with the absence of TBS ERC function, which therefore require to ensure good compatibility with NAS before purchase did miss the Desktop HDD.15 excellence for a storage drive. Too bad, but until the arrival of the Red and Green WD 4TB which should not take too long, the 4TB Desktop HDD.15 is anyway a position of strength.

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