Hitachi Global Storage Technologies, the company (Hitachi GST) and Anobit provide new solid-state disks (SSDs) used in servers for the front. The Ultrastar SSD400S Hitachi GST is 100, 200 or 400 GB capacity, and in two models available with: either the "non-mobile" 2.5-inch format with 15 mm height and SAS 6G interface or a Fibre Channel ( FC-4G) version in the 3.5-inch format. The SAS version is faster and is intended for sequential reading of 64-KByte blocks 535 MByte / s reach, writing succeeds depends on the capacity of 400 or 500 MByte / s. For randomly distributed access to 4-KByte blocks called Hitachi GST up to 46 000 operations per second (IOPS) and 13,000 when writing.

Because single-level cell (SLC) NAND flash memory chips write cycles use more as a multi-level cell (MLC) devices, equipped Hitachi GST, the Ultrastar SSD400S with SLC Flash, with special "Ultra -Endurance"chips from the 34-nm technology from Intel or the IM Flash joint venture of Intel and Micron. SLC Flash works but also faster than MLC flash.

Anobit The Israeli company takes a different approach: it optimizes the controller, so that cheaper MLC chips with the requirements of enterprise servers will be realized. According Anobit it tolerates the 200 or 400 GByte capacity available with Genesis, long day with their capacity to describe data to be ten times five years, ie with 2 or 4 TB.As interfaces are Serial ATA (3Gb / s), SAS or FC to choose from, the data transfer rate when reading and writing to and 180 MByte / s. 220th 30 000 20 000 or call Anobit IOPS when reading and writing.

For NAND flash memory built solid-state disks (SSDs) with fast controllers conventional magnetic hard drives, especially on randomly distributed accesses are vastly superior, the latter depending on speed and power to create design-around 150-450 IOPS per second. Therefore, the semiconductor mass memory, despite their high prices you pay per gigabyte for speedy SATA SSDs at least 30 times, as in typical 1-TB plates - in demand. Some server applications, especially databases, they can significantly speed up - and we need also of much less energy than a comparable high-performance storage subsystem magnetic disks.