Next Generation High Speed ​​SSDs

Not so long ago, new SSD-drives with SAS-3 interface (12 Gb / s) of HGST company, a leading manufacturer of enterprise-class solid-state SAS / FC-drives, went on sale. The company, which was founded by pioneers in the hard drive industry, continues its history of innovation, and is now the first supplier to offer SSDs with this high-speed interface to the market. These high-speed devices provide read speeds of up to 1200 MB / s and write speeds of up to 750 MB / s.
Before we examine in detail the characteristics of the new drives, let's talk about the advantages of the SAS-3 interface.
Firstly, its maximum bandwidth - 12 Gbit / s - is twice as much as that of its predecessor. The maximum exchange rate with SSD-drives connected via a 6-gigabit interface is 550-550 MB per second.
Secondly, the interface implements a mechanism for automatically adjusting the parameters of the transmitter based on information received from the receiver. The high signal quality provided by this and other mechanisms allows the use of cables up to 10 meters long (passive copper cable), 25 meters (active copper cable) and 100 meters (optical cable).
In addition, SAS-3 is an effective solution for use in SANs. Outperforming the 8-gigabyte FC in performance and only slightly inferior to the 16-gigabyte, the 12-gigabit SAS is at the same time significantly cheaper than the latter. However, it provides the same level of reliability.
Finally, the backward compatibility of SAS-3 drives with the SAS-2 interface allows them to be used in the existing storage infrastructure in order to fully unleash their potential after the upgrade.

Ultrastar SSD800MH
The eldest model of the new family - Ultrastar SSD800MH, when connected via the 12 Gb SAS interface, provides the following characteristics: read speed up to 1200 MB / s, write up to 750 MB / s. The I / O speed is as follows: up to 145,000 consecutive read operations and up to 100,000 consecutive write operations per second (arbitrary blocks). This is more than 100 times faster than hard drives and twice as much as that of solid-state drives with a 6-gigabyte interface. As for the service life of the device (memory type - MLC NAND), the modification with a capacity of 800 GB allows a total of 36.5 PB of data, or 20 TB per day. This means that the disc can be rewritten 25 times a day for 5 years. The warranty period for these devices is 5 years or is determined by the maximum amount of recorded data. Предлагаются также устройства аналогичного класса емкостью 400 и 200 Гбайт.
Areas of application Ultrastar SSD800MH - high-frequency trading, online transaction processing, data analysis and other tasks requiring intensive exchange with external memory and at the same time high speed.

Ultrastar SSD800MM
This model, which is also available in 800, 400 and 200 GB versions, is slightly inferior to the previous one, mainly in terms of the number of recording cycles. The device can be completely rewritten 10 times a day. The maximum read speed is 1150 MB / s, write - 700 MB / s. Maximum I / O Frequency: 145,000 consecutive reads and up to 70,000 consecutive writes per second (arbitrary blocks). Type of memory used: MLC. The maximum amount of recording: 14.6 PB, or 8 TB per day for 5 years.
Recommended applications are the zero tier of multi-tiered (tiered) data storage systems, high-performance computing systems, video processing systems, etc.
Ultrastar SSD1000MR
These drives, manufactured in versions of 250, 500 and 1000 GB, are designed primarily for use in read-oriented applications data. The maximum read speed is 1200 MB / s, write - 700 MB / s. Limit read frequency: 145,000 operations per second, write - 20,000 operations per second. The 1000-gigabyte model allows you to record a total of 3.7 PB of data, which is equivalent to 2 TB per day for 5 years. In other words, during five-year operation, the disc can be rewritten completely twice a day.
Recommended areas of application are the zero tier of data reading of high-performance storage systems, high-speed computing systems, video processing systems, cloud computing services, compact systems and low-power systems.

All drives are available in 2.5-inch form factor, in versions with power consumption (during input-output) 9 or 11 watts. The maximum time between failures is 2 million hours.