No you won't get the two full 2 terabytes if you just replace the
original drive and rebuild the raid array a second time. All it will do
is replicate what's on the existing drive, at best, and if the hardware
isn't identical, which of course it isn't, maybe not even that. You
really need to build a new array using the two new drives and then copy
all the files on the existing drive to the new raid array.
On 6/25/2015 10:19 PM, John wrote:
Question for the network admin gurus here on the list.
I have a NAS box with two Seagate ST31500341 1.5TB SATA drives in a
Raid-1 (Mirror) configuration. One of the drives failed.
The best value replacement I found is a 2TB Seagate NAS HDD (hard-drive
specifically manufactured for NAS).
I purchased two identical 2TB drives. The two NAS drives cost less than
the cost of a single *refurbished* Seagate ST31500341 1.5TB SATA drive
(no longer available new & the price point for new 1.5TB drives was even
higher).
The RAID will finish rebuilding in about 4 hours, but if I understand
how these things work, I will only be able to use 1.5TB of the 2TB drive.
Should I go ahead and swap out the other 1.5TB drive & rebuild the RAID
a second time?
If I do so, will I get full use of the 2TB drives or are they going to be
limited by the original 1.5TB RAID Mirror size?
I've been using PCs & building my own since 1980. I've had some external
USB drives that wouldn't work after sitting for a while & I've had
internal drives that failed after sitting on a shelf, but this is the
first hard-drive I've had fail in use.
(Not including when I worked at the IBM PC Company integrated software
sub-systems lab & the programmers abused the shit out of the hardware. I
was always replacing drives, motherboards, adapter cards, etc that they'd
burned up hot swapping stuff that wasn't intended to be hot swapped. But
that's another story.)
--
I don't want to achieve immortality through my work; I want to achieve
immortality through not dying.
-- Woody Allen
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