External Hard Drive Grayed Out?

External hard drive (Lacie) will not mount on finder. It shows up in Disc Utility, but the name is grayed out and when I click on "mount" nothing happens.
Is there any hope of getting that data back?
Thanks!

Click on the Repair Disk button with that disk selected in the Disk Utility; if the Disk Utility cannot repair it, an utility such as TechTool Pro or DiskWarrior might be able to, or you can try using Data Rescue to recover data from the drive without repairing any errors.
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