By: Bret Gibbs, Product Marketing Manager, Hewlett-Packard Company, SCSI Trade Association
SCSI Express is an emerging storage interface that runs Small Computer System Interface (SCSI) commands over a PCI Express (PCIe) link. It combines the enterprise-proven SCSI command set with the low latency of PCIe to create a powerful enterprise-class interface for the high-performance capabilities of SSD/flash storage.
Author: Jeremiah Tussey, PMC Senior Applications Engineer
Today's challenging datacenter environments demand flexible switching and connection capabilities for storage scalability. SAS storage architectures allow for extensible configurations by providing incremental connectivity solutions: passive copper cables, active copper cables, and active optical cables. The fundamental basis driving these solutions is the necessity for a variety of cabling options; depending on a SAS topology's needs for tiered interconnectivity, segregation, and failover capabilities. Figure 1 shows these different available options and how they might be used.
(by: Cameron Brett, former Manager, Alliances Marketing at PMC-Sierra, Inc.)
Tiered storage can have many meanings. It can mean the time-based movement of data from primary storage to an archive, as in hierarchical storage management (HSM). It can be interpreted as ensuring mission critical data is stored on the most protected storage volumes while less important data is stored on less protected storage. Today, it is commonly referred to as the caching or movement of data to flash-based storage for the fastest access of the most frequently accessed data so systems can perform at their optimal capability.
