I got a new server with four 80 GB disks. I create hardware raid 1
(mirroring) on first two disks. Then I created raid 1 (mirroring) on
second two disks. I installed Fedora 5 default install. After
installation from the command prompt, when I typed df -k I see a total
space of about 300 GB. How is that possible?
The OS should see only 160 GB right because the first disk is mirrored
to 2 disk and third disk is mirrored to fourth disk.
While booting up the the message does show two volume groups with 73 GB
each.
Please help.
Thanks,

ipy2006 wrote:
> I got a new server with four 80 GB disks. I create hardware raid 1
> (mirroring) on first two disks. Then I created raid 1 (mirroring) on
> second two disks. I installed Fedora 5 default install. After
> installation from the command prompt, when I typed df -k I see a total
> space of about 300 GB. How is that possible?
> The OS should see only 160 GB right because the first disk is mirrored
> to 2 disk and third disk is mirrored to fourth disk.
> While booting up the the message does show two volume groups with 73 GB
> each.

Volume groups are not raid arrays. What does the message actually say?
If you created two volume groups, then all you did was turn your first
two disks into one logical disk and the same for the last two.

Allen Kistler <ackistler@oohay.moc> did eloquently scribble:
> ipy2006 wrote:
>> I got a new server with four 80 GB disks. I create hardware raid 1
>> (mirroring) on first two disks. Then I created raid 1 (mirroring) on
>> second two disks. I installed Fedora 5 default install. After
>> installation from the command prompt, when I typed df -k I see a total
>> space of about 300 GB. How is that possible?
>> The OS should see only 160 GB right because the first disk is mirrored
>> to 2 disk and third disk is mirrored to fourth disk.
>> While booting up the the message does show two volume groups with 73 GB
>> each.

> Volume groups are not raid arrays. What does the message actually say?
> If you created two volume groups, then all you did was turn your first
> two disks into one logical disk and the same for the last two.

He said hardware RAID 1.
So, I think he's probably got a promise card.
The crappy ones that aren't supported by the latest kernels as anything but
disk controllers. Cos if he's got a REAL hardware raid card, the operating
system should've only been presented with 160gigs worth of hard disk space.

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