WD 128GB SSD combines with 4TB HDD and PCI-E interface




Western Digital has shown a hybrid drive in which a hard disk 4TB combined with a 128GB sdd. The prototype of the hybrid drive uses a PCI-E 2.0 x2 interface via an express sata connector.

Hybrid test drive WD is seen at CES position of the company. Despite the use of a PCI-E 2.0 x2 interface limits the use JMicron SATA-600 controller, the maximum throughput of about 550MB / s. Two hybrid drives in a RAID 0 array to combine throughput of approximately 1GB / s.

According to Anandtech, the SSD and hard drive can only be accessed as separate storage volumes. WD would work on a mechanism whereby the 128GB SSD for caching purposes is to use. It is still unclear whether and when WD will bring hybrid drives based on the prototype to market. It is also conceivable that Western Digital finally chooses a native PCI-E controller chip, so that higher speeds are possible.


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