PCI Express dual port interposer card
Responding to increased demands for more PCI Express (PCIe) based analysis products Teledyne Lecroy engineers developed the SFF-8639 dual port interposer card for analysis of dual ported solid state drives (SSDs). When used with Summit Protocol Analyzers it enables PCIe bus traffic between a host backplane and dual port SSD device to be monitored, captured, and recorded for protocol analysis. The product supports lane widths of x2 per port, PCIe host interfaces such as NVM Express (NMVe) and SCSI Express (SOP/PQI), and protocols at data rates from 2.5 GTps as fast as 8 GTps.
The card supports SSD monitoring for each individual A or B port and also when both ports are active at the same time, as in a dual port mode configuration test setup. The dual port interposer provides connectivity and monitoring capability for dual ported SSDs targeted at enterprise storage equipment that use the SFF-8639 connector. The Teledyne Lecroy solution can be used with 2 1/2” or 3” drives. The drive is then inserted into a drive tray on the interposer that supports an electrical and mechanical connection to an SFF-8639 connector. The interposer taps all PCIe protocol traffic between the host backplane and the storage device and records it on two PCIe protocol analyzers with each port data time synchronized, where protocol issues and performance metrics can be further analyzed and debugged. The interposer enables accurate simultaneous monitoring of both data port paths during interoperability test and system development.