Seagate Cheetah Hard drive sizes
Posted on 2009-05-10
I am running a Dell server with RAID 1 (mirror) configuration which has three logical drives set up ( 6 hard drives in all )
One of the HDDs failed so I needed to swap it out. All the hard drives are Seagate Cheetah 36.7GB. Luckily I had a Seagate Cheetah 36.7GB HDD and swapped out the failing drive, but when I attempted to rebuild it within the Perc 3D RAID controller console it informed me that it couldn't use it as the new drive was too small !
Further details viewed through the console revealed that all 6 original drives were 34,938 MB and the new drive was 34,678 MB !
The original drives are ST336754LC models and the new drive was a ST336753LC.
As they are both described by Seagate as 36.7 GB HDDs I called their technical support for advice. - unfortunately the guy was completely useless but the upshot was that I had to use the exact same model.
Thus I purchased a new Seagate Cheetah 36.7 GB drive same model type ST336754LC and guess what it shows up in the Perc 3D RAID controller as too small and displays the exact same size as the original 3LC spare we had which is 34,678 MB !! - which is exactly 260 MB less in each case ??
Any ideas anyone on what's going on ?
Thanks in advance.