Seagate preparing 3TB drives with no 32-bit support

Seagate plans to release a 3TB hard drive before the end of 2010, but it will only be compatible with 64-bit operating systems, the company confirmed.

The new 3.5-inch Constellation ES drive needs a 64-bit OS since PCs and servers will need to be able to support drives 2.1TB or higher.  The 2.1GB cap is an older standard related to an industry-wide decision to reduce the logical block address (LBA) used on HDDs.

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The LBA range support is available through Microsoft Windows 7 and 64-bit Windows Vista, but the long address cannot be read by any 32-bit OSes.  It's a shame that XP looks like it will miss out on the long LBA addressing, according to sources, since XP will be able to access just one-third of the drive.

The drive will be available in SAS and SATA versions, but there are still significant concerns related to the larger drives.

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"If high capacities are in your future, I highly recommend you check with your software and hardware suppliers on their plans for implementing Long LBAs today," noted Barbara Craig, Seagate senior product marketing manager, in a blog post.

In the future, manufacturers will need to pay attention to long-term LBAs.  I expect other manufacturers -- including Seagate, which will wait to see how this turns out -- to learn from any issues that arise with this new capacity.

Seagate is marketing this new drive for use by the enterprise, but a consumer option is currently in development.  The smaller 2.5-inch drive can be used in notebooks, but the company hasn't said when the drive will be released.

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I'm enjoying the new change in the PC industry at the moment now that the Universal Extensible Firmware Interface (UEFI) standard has been created by manufacturers.

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