dual-port

High Availability in an m.2 Format

Photo of finger pusing on hinge in center of m.2 HA SSDThe m.2 SSD format has become wildly successful in the data center for use as a boot drive and even in SSD arrays.  The m.2 format supports either the SATA or the NVMe interface,  Something that has been missing, however, is a version of this format for high-availability (HA) systems.  These are mission-critical systems that cannot fail, no matter what.

Until today HA systems had to use the SAS interface which supports two independent ports, or the new dual-port NVMe SSDs that come in either a 2.5″ U.2 or the AIC format.  Both of these offer redundant ports but, unfortunately, both U.2 and AIC SSDs are considerably larger than the m.2 format.

Despite its small size m.2 has so far not been considered as a candidate for dual-port SSDs.  This is because the m.2 format uses a card edge connection it must be inserted by sliding the narrow end of the card into the socket.  A dual-port version needs to have connectors at both narrow ends, making it impossible to plug the SSD into a pair of board-mounted sockets.

Today a revolutionary new company called Kowabunga Data is introducing its ingenious solution to the problem.  Yes, it is indeed an Continue reading