Establish rapid connectivity between two machines
Establish rapid connectivity between two machines
I discovered this cable: https://www.ebay.co.uk/itm/5m-OM4-Aqua-F...2755179454
And the card I found: https://www.ebay.co.uk/itm/IBM-Emulex-10...3043446024
SFP supports 1gbps, SFP+ for 10gbps. If your switch only has an SFP port, it will limit performance to 1 gbps. For 10gbps, you can link a NAS or similar device to the switch and achieve up to 10gbps between PC and switch. Each connected device can then transfer data at a maximum of 1 gbps. I’m not sure if an Infinityband card works directly with switches; I’d need to enable Ethernet mode on the cards or adjust settings in Windows for proper operation.
Hi, thanks for info. Because the cards have two ports each, could I transfer 20gbps if I use both ports at the same time. Also 8gb hardware is significantly cheaper then the 10gb and there is only two gb difference, would it be better to use 8gb instead https://www.ebay.co.uk/itm/HP-8GB-Dual-P...3964587495 https://www.ebay.co.uk/itm/HP-AJ718A-8Gb...2993065603 https://www.ebay.co.uk/itm/5m-OM4-Aqua-F...SZH-Cable/
Research the setup options for the 8 GB Fiber Channel card. Consider it more like a SATA controller using fiber instead of traditional SATA. If you enable ethernet mode, you'll get two ports likely operating at 3.2 or 6.4 Gbps speeds. The encoding method (8:10) means each 8 bits include error correction data, reducing the effective speed to around 32 Gbps in ethernet mode for a 40 Gbps card. You can probably run both ports simultaneously, but they won't operate together by default—only one port is active at a time unless you initiate a file copy. Compatibility varies; some systems support it with specific versions of Windows or server software. Be aware that certain implementations restrict one thread per port, so parallel transfers require separate ports. It might not be worth the effort unless you're on a tight budget, as more common cards offer better support and documentation.
Hello, thank you for your message. Appreciate the details. I also have a follow-up inquiry. They’re working with a non-profit and currently use 100MB switches to share an SMB drive. We’ve upgraded to 1GB switches, but the issue remains: there’s a single 1GB link between the server and a PC. When one device accesses the drive, it slows down the next. I’m wondering what type of fiber connection would be most suitable for this setup. They have a HP server with five 250GB SSDs in RAID. How can we increase the switch’s bandwidth? Should we add more Ethernet cables since the server only has four ports, or should we install an SFP switch and connect it via fiber between the PC and the server? You mentioned they default to SATA mode, so would I need to change it to an Ethernet card? I found a budget-friendly 40Gbps InfiniBand card and a compatible cable that converts InfiniBand to SFP. Can I use this to give the switch a 40Gbps link? Also, regarding performance: does using IPoIB still affect speed, even if it’s only a slight reduction? Losing a bit of performance is acceptable since 20GB is better than what they currently have.
When multiple users download files from the server, their transfer rates should balance over time. Instead of one user receiving a high speed and another a low one, both would experience roughly half the rate—like a short transfer period. To achieve this, consider using a switch with gigabit ports and SFP+ connectors, supporting speeds up to 10 Gbps. Connect the NAS/server to the switch via a 10 Gbps link, either through a DAC cable or by using two transceivers plus fiber or an optical RJ45 adapter to the server. The server already offers a 10 Gbps connection to the switch. Each user would then have about 1 Gbps to the switch, allowing transfers around 120 MB/s or roughly 1 Gbps. It's important to note that SFP and SFP+ are different technologies; SFP supports up to 1 Gbps while SFP+ can reach 10 Gbps. A switch with only SFP+ ports would limit performance to 1 Gbps. The recommended cable should handle the signal conversion needed for proper operation, or you may face compatibility challenges. For cost efficiency, opt for a standard 10 Gbps SFP+ card rather than trying to stretch the budget with expensive gear. Purchasing a switch with 1 or 2 10 Gbps SFP+ ports is a practical solution, and there are affordable options available if needed.