3 ms·
not these USB 3.0 ports. Connected with shared 4 Gbps, they only run at 4/5th, 1/2 or less of the full 5 Gbps speed.
by morphle 7y ago
not these USB 3.0 ports. Connected with shared 4 Gbps, they only run at 4/5th, 1/2 or less of the full 5 Gbps speed.
- tmikaeld 7y agoWhich means, 2 ports and two drives (not ssd) should give at least 100MB/s each. Maybe I wasn't clear enough on that. - 1Gbit ethernet - 1Gbit USB 3.0 port 1 - 1Gbit USB 3.0 Port 2 Total: 3Gbit of 4Gbit, having some margin to spare.
- fanf2 7y agoThe Ethernet is directly connected to the SoC, it doesn't share the 4Gbit PCIe with the USB ports
- dotancohen 7y agoOn the older RPIs the ethernet was connected via the USB ports, so I understand GP's stance.
- morphle 7y agoIt has: 1 Gbit Ethernet over RGMII 4 Gbit PCIe Gen 2 shared by 2 USB 3.0 (so 1x 4 gbps max or 2 x 2 Gbps shared) Total: 5 Gbits, no margin to spare
- kllrnohj 7y ago> or 2 x 2 Gbps shared Only if both drives are saturated at the same time. But since the context here is a NAS usage, there's a max 1gbps upstream/downstream in the first place so you could comfortably do a 4 drive mirror NAS off of this and not have any bottlenecks on the USB 3.0 -> SATA side of things.