Microchip is now making the push into 24G SAS with new Tri-mode RAID and HBA adapters. While RAID and HBAs are likely well-known to STH readers, tri-mode and 24G SAS may be new. For those who hear the term “tri-mode” and are a bit perplexed, the concept is to have SATA, SAS, and NVMe on a single controller. 24G SAS is the next-generation SAS interface replacing 12G SAS. While the SSD market is making it clear NVMe is the path forward, traditional disks and SSDs on existing dual-port HA storage controllers are still relevant for the legacy market, and that is what Microchip is focused on.
With this generation, we get PCIe Gen4 as well as the 24G SAS4. The faster host interface is actually a key component of the new solution as it allows for the higher data rates.
Interestingly, Adaptec branding is still being used. While a few years ago it was common to see PCIe x8 RAID adapters and HBAs. These days SSD performance has made x16 controllers more common, even with doubling the PCIe Gen4 bus.