Updated Mac OS X supports optimization DSS

The latest version of the Apple Mac OS X operating system supports the TRIM command, which allows systems with disk solid state (SSD) over optimally.

Apple Mac OS X 10.6 (Snow Leopard)

4.5 of 5 mice 26 Aug 2009

According to Mac rumors, Mac OS X 10.6.8 update announced last week, allows the TRIM commands to perform a function known as garbage collection, which erases the old data marked for deletion.

The command then consolidates existing on a SSD data so that it can be read sequentially and not randomly, which improves read performance.While many SSDs now contain an algorithm of vacuuming in firmware of the controller, their, it can create amplification of writing, or increased the displacement of the data on the NAND flash memory, which causes the player to wear more quickly.NAND Flash consumer, which is used to manufacture DSS for desktop and portable systems, was generally not more than 10 000 cycles of erase / write, where existing data are first erased and then re-written with new data. The cell only more expensive level (SLC) NAND, used in servers, has up to 100,000 erase / write cycles until the drive is used.The TRIM command works independently of the controller firmware, the overload of handling garbage collection.Microsoft Windows 7 also supports the TRIM command, prompting manufacturers as Intel SSD to add updates to the firmware to their products to take advantage of the command.

Apple is also one of the only companies to make portable computers that support the serial ATA 3.0 specification, which allows twice the flow of disk SATA 2.0 interfaces.For example, Apple MacBook Pro, which was published in February, has added support for SSDs with SATA 3.0 interfaces. Most SSDs manufactured today supports SATA 3.0 specifications.High-end Apple MacBook Pro now uses the specification SATA 3.0 to connect to the internal drive, which offers a speed a 6Gbps link.Apple a big bet on technology SSD, a trend confirmed by the fact it is now classified as top of the world of NAND flash memory consumers.


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