Practical file system size question

[Robert Bennett]

We have been running our Storage on XFS for over three years now and are
extremely happy.  We are running each file system on LSI Hardware Raid with
3 RAID groups of 12+2 with 3 Hot Spares, and 8 file systems per Head Node.
These are running on 2TB SAS HDDs.  The individual file system size is 66TB
in this configuration.  The time has come to look into moving to 3TB SAS
HDDs.  With very rudimentary math, this should move us to the neighborhood
of 99TB per file system.  Our OS is linux 2.6.32-279.11.1.el6.x86_64.

The question is - does anyone have experience with this type of
configuration and in particular with 3TB HDDs and a file system size of
99TB?  The rebuild time with 2TB drives is ~ 24 hours.  Should I expect the
rebuild time for the 3TB drives to be ~ 36 hours?

Thanks for all the hard work all of you do on a file system that continues
to dazzle.

-bob
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