Dear all, I'm a newbie on the RAID system. I just read something on
wiki and on other website.
Since my external USB HD is getting full, I wanted to integrate it
with a NAS.
Let's assume I buy a 4 bays NAS with 2 500 GB HD mounted. Then I will
add an old 180 GB HD.
Now the questions:

1) Can I create 2 volumes (if volume is the right word) one 3x180 GB
RAID 5 for 360 GB of space (more or less) and the other 2x320 GB RAID
1/5 for additional 320 GB (Total 680 GB out of 1180)?

2) If later I add a 4th HD, for example a 750 GB HD, can I upgrade the
system without losing data and without doing any external backup to a
2 volumes systems with one 4x180 GB RAID 5 for 540 GB of space and the
other 3x320 GB RAID 5 for additional 640 GB and eventually a volume
single HD of 250 GB (TOTAL 1430 GB out of 1930)

Previously Mao wrote:

If it is Linux software-RAID based an you do not fear partitioning
and configuring the RAID arrays yourself, this is possible and I have
done similar things in the past. The trick is not to use full
disks as basis, but partitions. Linux software RAID supports that.
Out of the box or with a hardware controller, you can typically
only do full-disk RAID.

On 28 Feb 2008 03:40:39 GMT, Arno Wagner privacy.net> wrote:

That's good. I also read that flex-raid technology in RND4250 could
allow this operation

Previously Mao wrote:

On 29 Feb 2008 15:40:58 GMT, Arno Wagner privacy.net> wrote:

Thanks a lot

Bye Maurizio

You might read up on ZFS & RAIDZ. It's kicking ass in a number of areas.

<http://en.wikipedia.org/wiki/Zfs>

I suspect you'd need to use it a networked file server, or run M$ as a
virtual machine.

On Mon, 3 Mar 2008 17:18:37 +0000 (UTC), David Lesher
panix.com> wrote:

Thanks for the link.

Now I have to decide if save time and go for a ready made solution
like Acer Aspire Easy Store or save money but invest lot of time and
go for a home made solution