\nRetail price (Russia), rub.<\/td>\n From 34,348 (market.yandex.ru)<\/td>\n From 17,498 (market.yandex.ru)<\/td>\n From 26,320 (market.yandex.ru)<\/td>\n N\/A<\/td>\n From 19,784 (market.yandex.ru)<\/td>\n From 27,495 (market.yandex.ru)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nThe first model in our modest collection of substantial hard drives\u2014the BarraCuda Pro 14 TB\u2014is a storage device for desktop PCs and DAS, but not just any ordinary one; it is a 'professional' model. On one hand, this means that the BarraCuda Pro is subject to the typical limitations of desktop hard drives. For example, it is not intended for use in RAID arrays, as having TLER (Time-Limited Error Recovery)\u2014a firmware setting that prevents HDDs from dropping out of the array due to prolonged attempts by the controller to read a problematic sector\u2014is advisable. Additionally, the BarraCuda Pro chassis is poorly adapted for operations in a shelf or NAS with multiple bays, as it lacks rotational vibration compensation.<\/p>\n
On the other hand, unlike most other desktop hard drives, HDDs of this brand have an extended annual workload resource of up to 300 TB of rewrites, are ready to operate 24\/7, and come with a five-year warranty. You definitely won't have to complain about performance (at least in tasks with predominantly linear data access): thanks to eight platters of 1.75 TB each, the device achieves a stable throughput of 250 MB\/s. Moreover, the manufacturer promises that the random access speed of the BarraCuda Pro will be higher compared to regular desktop drives, while power consumption will be lower than that of most 3.5-inch models. However, we will verify all of Seagate's claims.<\/p>\n
To achieve such a high data density within the standard perpendicular recording without using the niche SMR (Shingled Magnetic Recording) technology, Seagate had to implement one of the advanced methods that we write about year after year in our... summary articles<\/a><\/noindex>, - known as Two-Dimensional Magnetic Recording (TDMR). However, despite its name, TDMR is not related to the actual data recording process and is intended to increase the signal-to-noise ratio under high track density conditions by simultaneously reading the track with two read heads: these are spatially separated in such a way that the field captures adjacent tracks, making it easier to compensate for interference. In the future, hard drives with TDMR will gain even more heads, and along with the reliability of data reading, its speed may also increase, but this is still a matter of the future.<\/p>\nThe BarraCuda Pro drives significantly differ from their sibling devices in the lower series without the Pro suffix - starting with the fact that all standard desktop HDD models from manufacturers have been stuck at capacities of 6-8 TB. The BarraCuda Pro is more akin to a descendant of Seagate's server line, lacking features related to operation in arrays. As a result, the price of the device has risen to the level of enterprise models, if not higher: in Russia, the 14-terabyte model is not available for less than 34,348 RUB, while on retail platforms in the USA - $549. Even nearline models from Seagate of the same capacity are priced lower - starting from $375 or 28,936 RUB.<\/p>\n
\n\n\n\n <\/td>\n \n \n\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nThe next subject, the 14-terabyte Ultrastar DC HC530 disk, is a nearline-class storage device that represented the best of what Western Digital engineers could offer until the new 16TB model emerged. In 3DNews' experience, it became the first Ultrastar hard drive without the familiar HGST letters in its name: the company transitioned all server models to its own brand after the assets of HGST fully merged into the combined corporation. In its key features, this device resembles the 14TB BarraCuda Pro model: inside the hermetically sealed Ultrastar DC HC530 case, there are also eight magnetic platters with a usable capacity of 1750GB, and the data-reading from closely packed tracks is facilitated by TDMR technology. However, in other aspects and the variety of additional functionalities typical of enterprise HDDs, the Ultrastar DC HC530 cannot be placed on the same level as desktop models, even though the BarraCuda Pro is not a typical representative of its category.<\/p>\n
Thus, the usable recording density on the platters of the BarraCuda Pro and Ultrastar DC HC530 is the same, as is the spindle rotation speed, but the WD product guarantees a higher sustained linear read and write speed \u2014 up to 267MB\/s (it's unclear where the difference comes from, but tests will show if it actually exists). Access latency is reduced by a two-stage actuator of the new third generation and a large buffer of 512MB, and most importantly, Media Cache \u2014 reserve areas for fast block writing scattered across the platter surface. This last feature connects modern nearline drives with solid-state drives, which also have a variable relationship between physical sectors and logical blocks. Furthermore, starting from the 10-terabyte Ultrastar DC HC330 models, WD utilizes a small amount of flash memory for writing operation caching. It's worth noting that simultaneously with a (potentially) extremely high performance by magnetic storage standards, the WD product boasts moderate power consumption \u2014 in fact, it is the device with the lowest energy consumption among all test participants, based on its specifications.<\/p>\n
Drives of this class are designed for continuous operation in server rack conditions: dual spindle mounting, rotational vibration compensation \u2014 these and other design features of the Ultrastar DC HC530 have allowed for a rated workload of up to 550 TB\/year, while the Mean Time Between Failures (MTBF) stands at the typical 2.5 million hours for nearline models. In the unlikely event of a failure during firmware updates, a spare chip is soldered onto the controller board. The drive is available in configurations with native 4K byte sector access or emulation of 512-byte sectors, with SATA or SAS interfaces. In the latter case, there is also an option for full data encryption.<\/p>\n
Retail prices for the WD Ultrastar DC HC530 in the configuration with a SATA port and emulation of the legacy 512-byte layout reflect the advanced specifications and technologies of this device: starting from 27,495 rubles in Russian online stores and $439 on \"Amazon.\"<\/p>\n
\n\n\n\n <\/td>\n \n \n\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nAssembling a collection of 14 TB hard drives for comparative testing was not easy, and we were unable to acquire a suitable third-party device \u2014 Toshiba. Instead, we ended up with a model of the next generation, offering 16 TB. Currently, all three companies producing hard drives offer storage devices of this capacity, but it was Toshiba's MG08 series product that was the first among them. The record set by the Japanese company relies on platters with approximately, if not exactly, the same physical recording density as in the 14 TB BarraCuda Pro and Ultrastar drives, but Toshiba was able to pack nine \"pancakes\" into a standard 3.5-inch casing for the first time. The technology used was TDMR, which became an essential requirement for breaking new capacity barriers. The throughput of the Toshiba MG08 during sequential read\/write operations is expected to match that of the WD Ultrastar DC HC530, but strangely, the manufacturer does not disclose any details about the device's performance.<\/p>\n
It is known that Toshiba has also taken measures to increase reliability while simultaneously reducing write operation latency: the flash memory chip on board the MG08 allows data sent by the host controller for writing to be preserved in the event of a power failure. However, test results indicate that it also functions as a second-level cache after the DRAM buffer. This technology (Persistent Write Cache) is only mentioned in the specifications of drives emulating 512-byte formatting, which is an additional source of risk during a power failure (and to some extent, it steals performance) due to the need to perform read-modify-write operations for each logical block write that does not align with the boundaries of physical sectors. Notably, the MG08 series also includes models with native access to 4-kilobyte sectors. Whether this means that the latter are completely devoid of flash memory or simply lack the backup function is unknown. However, regardless of PWC, Toshiba MG08 and other drives from this company employ Dynamic Cache algorithms, which, according to the manufacturer, optimally allocate buffer space between read and write operations. We also do not have any detailed information on them.<\/p>\n
Other sources of increased fault tolerance in the Toshiba MG08 design include spindle mounting on both sides and rotational vibration sensors. These drives are rated to write 550 TB of data per year, have a standard workload rating of 2.5 million hours for enterprise devices, and come with a five-year warranty. Several different disk configurations with SATA or SAS interfaces and an optional end-to-end encryption feature are available for order. However, we cannot provide price guidance: the 16-terabyte Toshiba drive was introduced back in January, but it is still a rare find in retail.<\/p>\n
Toshiba MG08 16 TB<\/p>\n
Now that we have gotten to know the three main participants in testing, let's take a look at smaller capacity hard drives with which we will compare the new 14-16 terabyte models. One of them, the Exos X10 with a capacity of 10 TB, is a nearline drive containing seven magnetic platters in a sealed casing. And although the usable capacity of the platter has increased from 1429 to 1750 GB and more, the sequential access speed of hard drives should also have increased. By this parameter, the Exos X10 practically matches the same 14 TB BarraCuda Pro according to the specifications of both drives. Something clearly doesn't add up in the specifications of Seagate hard drives, but we have the opportunity to find out everything in practice.<\/p>\n
To increase access speed for random operations, the Exos series features an advanced write caching mechanism, AWC (Advanced Write Caching), which reduces response time. Within AWC, write operations are grouped in the DRAM buffer, as is the case with any other hard drive; however, the buffer retains a copy of the data after it has been written to the platter, and the contents of the mirror buffer can be immediately read by the host controller. In Seagate server hard drives<\/a><\/noindex> The 2.5-inch AWC form factor includes the next speed tier \u2014 reserved sections on the surface of the platters where data from DRAM is written sequentially (Media Cache), as well as a small amount of non-volatile memory for saving buffered data in the event of a power failure. However, the Exos X10 lacks flash memory, and possibly the Media Cache alongside it.<\/p>\nConsumer-grade hard drives for desktop computers and NAS differ in the Exos series with high metrics for mean time between failures (2.5 million hours) and a calculated workload (550 TB\/year), the ability to operate in a server rack without restrictions on the number of bays, and a five-year warranty period. The hard drive with model number ST10000NM0016, which we received for testing, additionally belongs to the Hyperscale modifications, which feature reduced power consumption compared to other Exos family members, but are only available with SATA interface and 512-byte sector emulation. In SAS interface configurations among Exos models, there are also variants with native access to 4-kilobyte sectors and a full disk encryption function.<\/p>\n
\n\n\n\n <\/td>\n \n \n\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nThe Seagate IronWolf hard drive was recently featured in our review<\/a><\/noindex> New models from this brand are introduced along with a Seagate solid-state drive for network storage. The 12-terabyte IronWolf model appears to be equipped with platters that have the same physical density of layout as the Exos X10, only here there is one more. However, Seagate rates the performance of their creation in sequential read and write operations much lower \u2014 only 210 MB\/s. There are also no sophisticated technologies aimed at compensating for the high latency inherent in magnetic storage devices.<\/p>\nAll IronWolf hard drives, starting from a capacity of 4 TB, have borrowed several hardware features from the Exos series that enhance reliability. The block of magnetic platters in each hard drive is balanced in two planes, while rotational vibration sensors ensure stable operation in a rack-mounted storage system or a stand-alone NAS with up to eight drive bays. IronWolf is designed for moderate operational mode with a workload rating of 180 TB\/year and has a mean time between failures of 1 million hours. Consequently, the warranty period for IronWolf is not as long as that of more serious models in Seagate's catalog \u2014 three years.<\/p>\n
\n\n\n\n <\/td>\n \n \n\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nUnder the S300 brand, the Japanese company Toshiba has released a series of drives for video surveillance systems \u2014 these hard drives also have their own dedicated features. review<\/a><\/noindex> on the 3DNews pages. Due to the expansion of the ATA Streaming Command Set data transfer protocol, the higher-end Toshiba S300 models guarantee simultaneous video recording from 64 surveillance cameras, but essentially they are typical drives for NAS and DAS with 24\/7 operational capabilities and a decent mean time between failures: like the IronWolf, it is 1 million hours, and the warranty period is also three years. Thanks to the constructive advantages of the S300 chassis \u2014 spindle mounting on both sides and active rotational vibration compensation \u2014 it allows for the installation of more than eight such devices in a single rack or a standalone NAS.<\/p>\nThe S300 model, chosen for comparison with new models ranging from 14 to 16 TB, is based on the hardware chassis of server disks MD06ACA-V and contains seven magnetic platters, and the device specifications indicate a typical random read\/write speed of 248 MB\/s for modern high-capacity HDDs. However, of the techniques used in Toshiba's server hard drives to reduce latency, the S300 retains only the Dynamic Cache function.<\/p>\n
Unlike all other participants in the testing, the S300, even with a dense stack of seven platters, operates without helium and is housed in a standard ventilated casing. It seems that this is precisely the reason the 10TB model has the highest power consumption in the summary specifications table of the test participants. Although this metric is only of significant concern to data center administrators, it directly impacts the HDD temperature. We will verify the actual power consumption of the S300 ourselves later, but for now, we will note this point.<\/p>\n
\n\n\n\n <\/td>\n \n \n\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nSource: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"\u0415\u043c\u043a\u043e\u0441\u0442\u044c \u0436\u0435\u0441\u0442\u043a\u0438\u0445 \u0434\u0438\u0441\u043a\u043e\u0432 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u0443\u0432\u0435\u043b\u0438\u0447\u0438\u0432\u0430\u0442\u044c\u0441\u044f, \u043d\u043e \u0442\u0435\u043c\u043f\u044b \u0440\u043e\u0441\u0442\u0430 \u0432 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0435 \u0433\u043e\u0434\u044b \u043d\u0435\u0443\u043a\u043b\u043e\u043d\u043d\u043e \u0441\u043d\u0438\u0436\u0430\u044e\u0442\u0441\u044f. \u0422\u0430\u043a, \u0434\u043b\u044f \u0442\u043e\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u0442\u044c \u043f\u0435\u0440\u0432\u044b\u0439 \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u044c \u0435\u043c\u043a\u043e\u0441\u0442\u044c\u044e 4 \u0422\u0431\u0430\u0439\u0442 \u043f\u043e\u0441\u043b\u0435 \u0442\u043e\u0433\u043e, \u043a\u0430\u043a \u0432 \u043f\u0440\u043e\u0434\u0430\u0436\u0435 \u043f\u043e\u044f\u0432\u0438\u043b\u0438\u0441\u044c 2-\u0442\u0435\u0440\u0430\u0431\u0430\u0439\u0442\u043d\u044b\u0435 HDD, \u0438\u043d\u0434\u0443\u0441\u0442\u0440\u0438\u044f \u043f\u043e\u0442\u0440\u0430\u0442\u0438\u043b\u0430 \u0432\u0441\u0435\u0433\u043e \u0434\u0432\u0430 \u0433\u043e\u0434\u0430, \u043d\u0430 \u043f\u043e\u043a\u043e\u0440\u0435\u043d\u0438\u0435 \u043e\u0442\u043c\u0435\u0442\u043a\u0438 \u0432 8 \u0422\u0431\u0430\u0439\u0442 \u0443\u0448\u043b\u043e \u0442\u0440\u0438, \u0430 \u0443\u0434\u0432\u043e\u0438\u0442\u044c \u043e\u0431\u044a\u0435\u043c 3,5-\u0434\u044e\u0439\u043c\u043e\u0432\u043e\u0433\u043e \u0436\u0435\u0441\u0442\u043a\u043e\u0433\u043e \u0434\u0438\u0441\u043a\u0430 \u0435\u0449\u0435 \u0440\u0430\u0437 \u0443\u0434\u0430\u043b\u043e\u0441\u044c \u043b\u0438\u0448\u044c \u0437\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":27857,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-37155","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t