As per the title, are the two versions compatible?
Best Answer
The designers of SATA intended for backwards and forwards compatibility, however, there are some SATA 1 controllers that don't support SATA 2 drives. For this reason, some HD manufacturers added a SATA1/2 mode jumper so that the drives would work with the affected controllers.
See this section of the Wikipedia article for relevant chipset info. From that section, affected chipsets are motherboard host controllers using the VIA and SIS chipsets VT8237, VT8237R, VT6420, VT6421L, SIS760, SIS964 found on the ECS 755-A2 manufactured in 2003.
You should be ok using SATA 1 drives with SATA 2 controllers. (At least, I didn't find any contradictory information).
Check what PCI adapters are installed. The way how to do it depends on your operating system, e.g. Device Manager in windows or lspci output in linux. If your computer is a PC, you should check the BIOS messages during the boot process.
Speed negotiation is part of the SATA initialization protocol. Any controller worth it's weight properly implements this. Some early VIA and SiS chipsets were known to fail at this, but I would expect better from the SAS 5i/R (LSI, I believe?)
Best Answer
The designers of SATA intended for backwards and forwards compatibility, however, there are some SATA 1 controllers that don't support SATA 2 drives. For this reason, some HD manufacturers added a SATA1/2 mode jumper so that the drives would work with the affected controllers.
See this section of the Wikipedia article for relevant chipset info. From that section, affected chipsets are motherboard host controllers using the VIA and SIS chipsets VT8237, VT8237R, VT6420, VT6421L, SIS760, SIS964 found on the ECS 755-A2 manufactured in 2003.
You should be ok using SATA 1 drives with SATA 2 controllers. (At least, I didn't find any contradictory information).