Hello, I've read many articles about PERC 5/E and after last article from Dell's website I am totally confused. I do not have much experience with these things.
http://www.dell.com/downloads/global/power/ps3q07-20070368-Olivarez-OE.pdf
My question is: If I daisy chain 3x MD1000 and connect them to one port, what is the maximum throughput? How could I hit 1GBps? Is 300MBps maximum per port (wide port?) or per PERC 5/E? How could I go above this?
(on link provided at the top) "The PERC 5 is connected to the server through an x8 PCI Express slot rated at 2 GB/sec (although some systems may utilize an x4 PCI Express slot, rated at 1 GB/sec). The PERC 5 has two SAS wide ports to connect the controller to expanders. Each wide port is a combination of four SAS ports rated at 300 MB/sec each, providing a throughput of 1,200 MB/sec per expander, or 2,400 MB/sec total."
I understand wide ports, but what do they exactly mean by "four SAS ports" ?
Do they mean that each physical port is somehow 4 SAS ports? So it has dual x4 SAS? Then each port has throughput of 1.2GBps? Did I understand it correctly?
Please explain someone simply. Thanks in advance!