SAS vs. SATA hard drive not recognized via USB

steve54321 · May 16, 2015

This sounds a very basic concept but I am really confused. I have an SAS hard drive from Seagate:

http://www.amazon.com/Seagate-Cheetah-15000RPM-Internal-ST3600057SS/dp/B002P4J3YI

The hard drive has a SAS-to-SATA adapter than converts SAS to SATA format already:

http://www.amazon.com/SAS-to-SATA-Hdd-adapter/dp/B001JDLQM8/ref=sr_1_2?ie=UTF8&qid=1431832181&sr=8-2&keywords=sas+hdd+adapter

Then I have a SATA-to-USB 2.0 adapter connected to the SATA port. The USB port of course connects to PC directly. But the hard drive seems not recognized. I checked some PC models that uses this SAS HDD and it appears to me SAS controller is needed.

So I am confused: how do I connect to this SAS hard drive? Isn't the SATA-to-USB adapter supposed to convert to USB signal? If I do need SAS controller, where to put this controller?

Thanks

Phillip Corcoran · May 17, 2015

where to put this controller?

You can buy & install an SAS controller card which fits in to a PCIe slot.
Then you connect the SAS drive to that card (with the drive fitted in to an internal drive bay).

There may be some method for external connection but you'll need to ask someone else about that.
I've only ever used SAS drives internally as they were designed to be used.

steve54321 · May 17, 2015

Thanks Philip. I assume, from Philip's answer, SAS HDD can't be put into a mobile enclosure (like IDE and SATA ones) as I don't know any enclosure is PCIe based. But it sounds there may be other methods can try?

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SAS vs. SATA hard drive not recognized via USB

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