SAN JOSE – The HGST division of Western Digital demonstrated a solid-state disk drive with a 12 Gbit/second Serial Attached SCSI interface working with chips from LSI and PMC-Sierra. The tech demo represents another milestone in the roll out of the next generation storage interface.
The demo is an effort to get ahead of a Silicon Valley event next week where members of the SCSI Trade Association will publically show 12G SAS and other products. The fast SAS interface will compete with NVMe, a PCI Express interface expected to be used on a wide range of flash drives and components from vendors to emerge later this year.
HGST (formerly Hitachi Global Storage Technologies and now a Western Digital company) said its 12G SAS flash drive delivers twice the throughput of today’s 6G SAS products. Because SAS drives support two ports, the new product can deliver a total of 4.8GBytes/s per drive, the company said.
The demo showed the flash drive working with expanders from both LSI and PMC-Sierra. The STA expects this year to be one where initial 12G SAS products are launched with market adoption coming in 2013.
All the major storage interfaces, including SAS and serial ATA, are migrating to PCI Express transport in the future.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.