4TB HGST SATA drive only shows 1.62 TB in Windows Server 2012

Posted by user136085 on Server Fault See other posts from Server Fault or by user136085
Published on 2012-09-16T14:44:20Z Indexed on 2012/09/16 15:40 UTC
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I'm using a Supermicro X9SRE-3F motherboard with the latest BIOS and 2x 4TB drives connected to the on-board SATA controller.

If I set the BIOS to RAID and create a RAID 1 array, the array shows up in the BIOS as 3.6TB. However when I boot Windows (on a separate RAID 1 array), the 4TB drives show up individually in disk manager as 2x 1.62TB drives.

I could use Windows 2012 to set up software RAID 1, but when I set the BIOS back to 2x individual drives, they still show up in Windows as 2x 1.62TB drives.

How do I access the full capacity of these drives?

Thanks, Brian Bulaw

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