Most people today do not prefer to buy hard drives and solid state drives. But given the price of a gigabyte to store large amounts of data without the traditional hard disk drives can not do. Especially it concerns the NAS network storage, which are becoming increasingly popular among home users often organize on the basis of their cloud storage. Manufacturers take into account the long-NAS market, and in our lab just received three such drive: Seagate Ironwolf 8TB, Western Digital Red 8TB and Toshiba Enterprise Cloud 6TB. Full details and test results, you will learn in our review.
Seagate has recently renamed its stores for the consumer market, the 8-terabyte model ST8000VN002 no longer called “Seagate NAS HDD”, is now “IronWolf” in front of us. As part of the renaming of the program “Guardian” hard drives “IronWolf” focused on network storage drives “Barracuda” – on desktops or laptops, “Skyhawk” – a surveillance system, and under the name “FireCuda” hidden SSHD combo drives. However, the drives for the corporate segment Enterprise NAS HDD renaming is not affected. ST8000VN0002 is no longer the flagship of the line, Seagate recently announced a new 10-terabyte model IronWolf, which will soon go on sale. 8-terabyte hard drive has a spindle speed of 7,200 rev / min, is equipped with 256 MB of cache and is aimed at high loads and high reliability.
Western Digital in our test shows an 8-terabyte hard drive “Red”. Aggregators “WD Red” has long become synonymous with hard drives for NAS, version 8 TB surely find its buyers. WD Red 8TB of interest because, as some hard drives HGST for the corporate segment, they are filled with helium, which made it possible to install into seven plates. WD Red 8TB for the building and some of the other components in the subsidiary HGST, but the spindle speed has been reduced, also uses a proprietary firmware NASWorks. Due to the spindle rotation speed 5,400 rev / min from the drive can hardly wait for the maximum performance. However, for home NAS more important power consumption and noise level.
The third model in our tests – MC04ACA600E hard drive from Toshiba. It belongs to the line of Toshiba Enterprise Cloud, it should not be confused with the family of consumer X300, although the design of the case and most of the technical specifications of a given level of capacity from Toshiba is not different. But MC04ACA600E performance should be comparable with the X300 to 6TB. Ruler MC04ACA, as promised Toshiba, focused on less demanding enterprise cloud storage and server level 3. That is, the drive meets the requirements of reliability and stability for the server environment.
With storage ST8000VN0002 Seagate was the first manufacturer who submitted the hard drive to 8TB of networked storage level of small businesses and home users. Unlike Seagate Archive 8TB models for low-cost NAS, drives Iron Wolf 8TB and 8 TB Barracuda desktop use perpendicular magnetic recording technology (PMR, Perpendicular Magnetic Recording).
Drive Ironwolf 8TB codenamed ST8000VN0002 uses the SATA interface 6 Gb / s (backward compatible with lower speed standards), is equipped with a relatively large volume of 256 MB cache, spindle speed of 7,200 rev / min. According to the specifications of the power consumption of 7.2 watts in idle mode, 9.0 watts in active mode – the level is quite high, but it is associated with a large number of plates and high spindle speed. Seagate gives to IronWolf 8TB warranty of three years.
ST8000VN0002 for network storage with up to eight hard drives. At the close location of the disk in such systems may experience problems of transferring vibration, so Seagate uses a special technique of balancing on two planes AgileArray to prevent them. Unlike desktop models Barracuda here, a special firmware that is optimized for the NAS, to restore function after errors. NAS Hard drives have a higher reliability and are designed for 24×7 operation and higher load (the amount of TB per year).
Hard disk manufacturers continue to expand capacity, which can be clearly seen on the Iron Wolf 8TB. But to increase the storage density of data is obtained is not as fast as before, since the magnetic recording technology rests on the technical and physical limits. Therefore, in recent time, manufacturers are increasing the number of plates.
We used six ST8000VN0002 plate capacity of 1.33 TB. For this the number of plates required space, a 3.5-inch format is hardly enough, as can be seen on the lower part of the body, where the payment is shifted to the corner. There is another negative effect: the center left space for the HDD mounting holes, so when you install ST8000VN0002 have to use two external holes. In addition, the location of the hole is different from the standard, so we recommend that you consult with the NAS manufacturer before purchase. If the hard drive is not listed in the compatibility list, you may have to fasten it to the tray with two screws instead of four.
The advantages claimed ST8000VN0002 we put the error rate does not exceed 1 to 1015 bits, which is nominally better than the other two models in our review. Unlike conventional user data, if RAID array bit error will lead to a complete restructuring of the array, so the likelihood of error is less, the better.
On line Red Western Digital was the first manufacturer who submitted hard drives for NAS. Popular and inexpensive desktop hard drives (WD Green) is not suitable for 24/7 operation, including by reason of frequent parking the heads, so the manufacturer, and introduced a new line. Unlike Seagate, WD Red for the family does not indicate any major changes compared with the desktop version in addition to the firmware, but probably, the WD adds a number of optimizations on a physical level. Originally of Red WD drives have capacities up to 4 TB, and intended for use in the NAS, HDD with up to five, but now WD has expanded support for up to eight HDD in a single repository. WD Red line was later extended versions of WD Red Pro, which can work in up to 16 storage HDD, a guarantee on them for five years.
At WD Red 8 TB is a very interesting story. Manufacturer HGST, which is now owned by Western Digital, in 2012 began developing hard drives filled with helium. The density of helium is much less air, which gives a number of advantages, such as reduction of air resistance and reduction of turbulence of moving parts. All this allows to reduce the distance between the plates and increasing the number of plates. Reduced friction results in a decrease of energy consumption. Since the end of 2013 HGST has sold more than one million hard drives filled with helium. For hard drive WD Red 8 TB Western Digital has taken HGST technology and some mechanical components HE8 line, it developed its own firmware and reduced spindle speed.
WD was able to fit in the seven plates Red 8TB capacity of 1.2 terabytes. Spindle speed is 5,400 rev / min, Cache – 128 MB, SATA interface 6 Gb / s. WD80EFZX, as well as other modern Red line model is equipped with firmware “NASware 3.0”. At 8 TB WD Red we get three standard screw holes on each side, except that the bottom in only one pair of holes of the two standard position. Power consumption in idle mode is 5.2 watts under load – 6.4 watts.
Toshiba – third independent manufacturer of hard drives on the market in addition to WD and Seagate, drives range includes models for the consumer market and the corporate segment. For the consumer market Toshiba offers a 3,5 “HDD and X300 families of the P300, which are complemented by MD04ACA for OEM-segment. Toshiba has decided not to philosophize by HDD clear names for different markets, namely,” Generic Data Storage HDD “(consumer PC) or Performance , capacity and Cloud HDD (corporate segment). The last two lines contain a SATA model, enterprise Cloud line has a capacity of 2 to 6 TB. models for 8 TB Toshiba, unfortunately, does not offer.
MC04ACA600E is the top model in the line, the spindle speed of 7,200 rev / min, Cache – 128 MB, idle power – 6 W, under load – 11.3 watts. The probability of bit errors – 10 in 1015, at the level of the WD, but less than 1 in 1015 from Seagate. The manufacturer indicates the annual load record 180 TB hard drives are certified in the mode 24×7.
In appearance, in particular, cover the design MC04ACA600E similar to other HDD Toshiba at 7,200 rev / min. The difference lies in the firmware and optimizations, but here the manufacturer did not disclose details.
To determine the performance of the hard drive, we connected it to our system and run tests CrystalDiskMark and HD Tune Pro. We used the standard test system with a processor Intel Core i7-6700K and motherboard Asus Z170 Deluxe.
In the CrystalDiskMark test drive ST8000VN0002 showed almost 240 MB / s sequential read throughput, and write what you might call an excellent result. Even 3 MB / s when using blocks of 4,096 bytes (4K) and turn of the 32 teams in ST8000VN0002 is the highest result in our tests. Is that a single reading for 4K blocks performance decreases. But for NAS systems or RAID configurations, a single turn is more the exception than the rule.
The HD Tune Pro test, we see a picture of performance across the data surface. The data transfer speed depends on their location on the disk. On the outer tracks we get a higher linear velocity than on the inner tracks, so in one revolution of the plate is transmitted more data. Therefore, hard disks exhibit the highest speed at the beginning of the data transmission (with outer tracks). ST8000VN0002 a drive test HD Tune Pro, as in CrystalDiskMark, showed performance below 240 MB / s. On the internal speed paths drops to 105 MB / s.
By recording speed situation is similar: on the outer tracks we get almost 235 MB / s on internal – up to 105 MB / s. HD Tune Pro test showed significantly greater access time in read operations than write operations. What explains the difference just by a single-threaded performance in 4K CrystalDiskMark
WD Red 8 TB generates less power consumption and noise, as spindle speed is only 5,400 rev / min. maximum bandwidth of 180 MB / s are listed on the manufacturer’s website, which is not much. In CrystalDiskMark tests WD80EFZX hard drive showed just such a level. Results of tests of reading and writing at 4 kbyte blocks from the queue 32 entries for the drive to 5,400 rev / min is also very good.
The HD Tune Pro we got the maximum read speed of 183 MB / s on the outer tracks and 87 MB / s on the inner.
As for the recording, the performance is identical to the read operation, even the average level of 143 MB / s is almost identical. In general, the storage capacity for at 5,400 rev / min pleasantly high.
Toshiba MC04ACA600E in CrystalDiskMark test showed the maximum capacity below 210 MB / s, located between Ironwolf 8 TB from Seagate and WD Red 8TB. With regard to operations with blocks of 4 Kbytes, then the queue depth of 32 drive Toshiba lags behind Seagate and WD. With a single 4K blocks access to that network storage is not as common, MC04ACA600E usually lags behind Seagate ST8000VN0002 and WD Red 8TB.
The HD Tune Pro benchmark for read operations, we got speeds of up to 222 MB / s, the minimum level – just below the 100 MB / s. However, 222.3 MB / s is achieved with a very large fluctuations, there is still more reasonable to take the level of the order of 208 MB / s, shown CrystalDiskMark.
As far as performance record, we got speed in the range from 216 to 96 MB / s, which is for a 6-terabyte HDD to 7,200 rev / min level is tolerable.
As can be seen from the results hard drive Seagate ST8000VN0002 was the fastest in our tests, which is not surprising, considering cache and 256 MB storage capacity of 1.33 TB plates. Toshiba MC04ACA600E can also be called the HDD speed, but the WD Red 8TB pleasantly surprised, because the hard disk to 5,400 rev / min, we obtain a relatively high level of performance. At home NAS advantages ST8000VN0002 performance will hardly be noticeable, which is not the low power consumption and low noise level competitor.
For network storage, containing many drives and working in 24×7 mode, the issue of power consumption of hard drives can not be ignored, since it directly affects the operating costs. Of course, in the specifications of manufacturers specify the power consumption at idle and under load, but our own measurements will not harm in laboratory conditions. To measure energy consumption, we have modified the SATA power cable. We set on the line 5 and 12 shunts by means of which received information about the strength of the current. We also analyzed and stress. For the instrumental evaluation, we used a digital oscilloscope. Of course, a simplified system with two multimeters also have coped with the task, but let the oscilloscope to get ten thousand measurements for a second, which are then averaged. What gives a more accurate picture of the whole power consumption.
In ST8000VN0002 idle shown a level of 8.3 W, which is higher than 7.2 W polvatta the specifications. We drive Toshiba MC04ACA600E smaller capacity, we also received a high level of power consumption of 7.3 watts. In the hard drive WD Red 8TB power was 5.4 watts, quite close to the manufacturer’s specifications and three watts less Seagate. Interestingly, WD80EFZX consumes 40 percent more energy than 2TB drive WD20EFRX, power which we also measured for comparative purposes.
Under load, recording both the Seagate hard drive, and Toshiba broke the mark of 10 watts. WD80EFZX also increased power consumption, but the level of 7.1 watts is still far below the competitors in the 7,200 rev / min.
In the scenario of random blocks of 4K reads on the balance of power remains the same. ST8000VN0002 comes forward with a power of 9.9 watts, followed by the Toshiba MC04ACA600E from 9.2 watts level. Drive WD Red 8TB showed only 6.8 watts – a difference of about 3 watts.
The sequential read test drives consume a little more power than in the case of random read blocks of 4 KB.
Quite interesting pattern of energy consumption at the start of the disc. This load is the peak character, that is, it is observed a split second, but it is clearly seen that the parallel launch of discs may be a serious problem for the system power supply. Therefore, some NAS models run hard disks at a time, not simultaneously.
In this test the Seagate hard drive came in first place for energy consumption, showing a level of up to 24.5 watts. Hard Drives Toshiba and WD Red 8 TB consumed, respectively, 17.2 watts and 15.6 watts, which is much less. But even the “younger” WD20EFRX at startup consume up to 12.2 watts, which is almost three times more than the idle.
Seagate has provided for the test four samples ST8000VN0002, which made it possible to conduct another test. We took the Synology DS415 + storage with four hard drives WD Red 4TB (WD40EFRX), and then replaced them with four 8-terabyte HDD Seagate. The current that was already filled to 75%, so that the hard drive upgrade scenario seems realistic.
Network Storage DS415 + uses 4-core Intel processor and belongs to the fastest model with four compartments in the consumer market. Therefore, in this case, the CPU bottleneck should not be. For our tests, we have reserved that SHR / btrfs WD40EFRX from hard disk to an external source, and then restored is on four ST8000VN0002. Upon completion of all the operations we conducted measurements of performance, power consumption and noise level. We wanted to answer the question of how such an upgrade will affect performance, noise level and energy consumption.
To test performance, we again used CrystalDiskMark. The maximum transmission rate is restricted Gigabit Ethernet connection. Therefore, in line at the 32 records both versions with 4 TB WD Red and 8-TB Seagate rested on the network bandwidth. In other tests, the differences were small. Configuration with 4 TB WD Red took the lead on the 4K recording transactions (single-threaded and queue), a variant with 8-TB Seagate was better for sequential read in single-threaded mode. We performed several runs CrystalDiskMark and took the highest score, but, in general, the difference in performance was less than one would think, based on the specifications of the hard drives. Probably for most of the difference should be used even more powerful platform.
In the second test we used ATTO test, which is also addressed to the SMB storage DS415 +. Default ATTO uses a relatively small queue depth of 4 post, the NAS with hard drives Seagate has shown the best results with a small amount of units, especially in the recording, the difference was about 10 percent.
With the queue depth of 10 entries from 16 KB block size, we get almost the full interface speed of 1 Gbit / s. 8-terabyte hard drives Seagate once again come forward, especially in the small size blocks.
We decided to conduct tests in a scenario with multiple clients and Link Aggregation. We have added two more in the network client and activated on the LAG DS415 +, and then got a peak performance of up to 200 and 230 MB / s on two HDD configurations. With the 4-terabyte capacity WD Red is usually stood at about 180 MB / s, in the case of Seagate 8TB level rose up to 200+ MB / s. However, here it affects a number of factors, so these tests provide only a rough estimate.
In general, network storage Synology DS415 + with Seagate ST8000VN0002 hard drive running a little faster, but in a typical scenario, the home connected via gigabit port of the difference is not as noticeable. In the case of multiple clients and Link Aggregation performance advantage on the hard disks of 7.200 / min compared with 5.400 for WD Red / min noticeable but small.
For many consumers, the issue of energy consumption and the noise level is more important than the question of productivity. Indeed, conventional NAS systems for power consumption of hard drives can be a decisive factor. Compared with the WD Red 8TB Seagate Ironwolf 8TB idle power was higher than 3 watts. For four HDD we get a difference of up to 12 watts. Junior 4-Tbyte WD40EFRX should consume anywhere between 2 and 8-terabyte versions, so we expected a difference of 4.5 watts to the HDD.
In our tests, the difference was even higher than the expected 18 watts, but this should be taken into account on the NAS loss of efficiency power supply. We got 55.2 watts against 33.9 watts in idle mode, that is, the difference was about 21.3 watts. Given the efficiency of the power supply of 85-90%, we come to the calculated level.
Under load the configuration on ST8000VN0002 consumed 17.8 watts more than WD40EFRX. In the last two tests we carried out under load parallel reading or writing tests with three clients.
With a combined record of the difference was the same 17.9 watts.
Power DS415 + with ST8000VN0002 hard drives turned out to be 40-60 per cent higher WD40ERFX, depending on the scenario. If the store will most of the time to be idle, the annual energy consumption DS415 + with hard disks WD40EFRX be about 300 kWh (or 900 rubles at the price of 3 rubles per kWh). The annual increase in energy consumption ST8000VN0002 be about 60 percent, or about 186 kWh or 560 rubles. The more active NAS will be used with both types of configurations on HDD, the greater the energy costs. However, in relative terms ST8000VN0002 power consumption increases under load is not so much.
If you calculate the configuration of the four WD80EFZX instead of four WD40EFRZ, it will consume about 40 percent more energy or 120 kilowatt-hours more (360 rubles per year). So the advantage of the configuration of the four WD80EFZX compared with ST8000VN0002 is only about 200 rubles a year. Considering the retail price of 90 thousand. Rubles for the four 8-terabyte HDD, such savings can not be ignored.
We conducted sound level measurements from a distance of 10 cm from the front panel NAS. Background noise at the time of testing was 32 dB (A). If WD40EFRX idle with DS415 + quiet fan noise we obtained approximately 39.4 dB (A). In general, storage DiskStation DS415 + to work pleasantly quiet, the noise of the hard disk was barely noticeable. After installing ST8000NV0002 noise rose to 43.5 dB (A), the noise of the hard disk was already clearly noticeable, but not annoying.
Under load, the difference in the level of noise has already become clearly noticeable. In operations with different load we have a difference of about 3 dB (A), that is, hard drives ST8000VN002 perceived noise level of about 25 per cent higher. And the feeling in practice similar. The Synology DiskStation DS415 + hard drives installed using plastic trays and held the side bindings. Recently fitted with rubber rings, which gives a certain vibration isolation. However, some scenarios were clearly audible access to any hard disk, although with WD40ERFX due to less noise storage was less noticeable. With hard drives ST800VN0002 store sounds more “aggressive”, the noise level was higher. In a quiet room with the door open access operations ST8000VN0002 were heard in the next room, in case WD40EFRX they can be heard only in the same room.
It is time to reach a verdict on the upgrade with 4 TB hard drives 8-TB Seagate. In home networking storage advantage of the 8-terabyte HDD to 7,200 rev / min is not noticeable. It can be seen only when multiple clients are simultaneously access the NAS. But if the fundamental power for you, then hard drives for 7,200 rev / min more “gluttonous”. On the other hand, considering the price of disks, power consumption increase is not fundamentally important. But the noise from HDD to 7,200 rev / min is noticeably higher. Of course, by themselves can not be called Red 4TB silent, and Seagate 8TB noise is much less than the server hard disk, but in practice the difference is palpable. Although most users will find the noise level is still tolerable. Storage hard drives WD Red 8TB worked a little quieter Seagate ST8000VN0002 configuration. Some users complain of buzzing ST8000VN0002 idle, but we are not faced with such a disadvantage even after extensive testing.
Two of the most interesting hard drive in our tests – Seagate Ironwolf / NAS 8TB (ST8000VN0002) and Western Digital Red 8TB (WD80EFZX). First released performance and a good set of features for high-end NAS. WD Red 8TB also provides good performance, but it pleases less power consumption and less noise as compared with the HDD to 7,200 rev / min. Toshiba MC04ACA600E, while enterprise-class model, also provides a good level of performance, but still inferior to ST8000VN0002, at least in terms of enthusiasts.
ST8000VN0002 works with rev / min, the cache is 256 MB spindle speed of 7,200. Capacity 8TB scored six plates each with a capacity of 1.33 TB. Unlike ordinary hard drives for desktop computers, here we have optimized for the work of several drives in a single rack (up to eight HDD), as well as work in the mode 24×7. On the technical side, we note a low probability of bit errors reading 1 to 1015, that is better than many competitors. But for the high performance ST8000VN0002 have to pay a price, hard drives consume more power and are working with a large noise level. In terms of price / performance IronWolf 8 TB is also well-behaved show because of the relatively low price.
With new models WD80EFZX Western Digital has updated its family of Red. The company used the technology HGST helium filling, reducing the spindle speed to 5,400 r / min. At Red 8TB we have a relatively low energy consumption and a moderate level of noise. The advantages WD80EFZX not we put a significant drop in performance by optimizing data. Of course, the serial data rate of the hard disk is inferior ST8000VN0002, but for random read / write with a small block size in WD80EFZX performance is quite decent, that allows to recommend these models for home NAS.
Toshiba MC04ACA600E – very good hard drive, but it is not so interesting for home use, as relates to the corporate segment and is more expensive models to 8TB. For home use is better suited X300 6TB with a very good price / performance ratio, but appreciate the qualitative difference with MC04ACA600E problematic. At least, the two are very similar in HDD specifications. For the HDD to 7,200 rev / min MC04ACA600E really works fast, but it is not a cost-effective and quiet hard drives.
We reviewed the script to upgrade the four WD Red 4TB in Synology DiskStation DS415 + storage on four Seagate Ironwolf 8TB. For home users, the change in speed is unlikely to be noticeable. However, the NAS was to consume about 50% more energy, and the noise level increased. However, the increase in electricity costs compared to the price of the 8-terabyte hard drives can be called miserable. So if your repository is not installed in the bedroom or the living room next to the TV, upgrade to ST8000VN0002 quite makes sense. Moreover, judging by the specifications, hard drives provide a high level of reliability.