05-12-2006
I think that you are right. Raid 1+0 will be a stripe of mirrors. So you carry out mirroring for the two disks and you need atleast two more disks to carry out the striping.
Here's a link that discusses Raid 1+0 versus Raid 0+1. Also check
this page. Says very clearly that Raid 1+0 requires a min of four disks to implement.
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LEARN ABOUT DEBIAN
raidfile.conf
RAIDFILE.CONF(5) Box Backup RAIDFILE.CONF(5)
NAME
raidfile.conf - Userland RAID for Box Backup
SYNOPSIS
/etc/box/raidfile.conf
DESCRIPTION
The raidfile.conf is usually generated by raidfile-config(8) but may be manually edited if the store locations move or if more than one
disc set is required.
discX
Specifies a set of discs.
SetNumber
The set number of the RAID disc, referenced by each account.
BlockSize
The block size of the file system (usually 2048). Under BSD with FFS, set this to your file system's fragment size (most likely an
8th of the block size).
Dir0
The first directory in the RAID array.
Dir1
The second directory in the RAID array. If you do not wish to use the built-in RAID functionality, this field should be set to the
same as Dir0. You should not use the built-in RAID if you have a hardware RAID solution or if you're using another type of software
RAID (like md on Linux).
Dir2
The third directory in the RAID array. The same notes that apply to Dir2 also apply to Dir3.
FILES
/etc/box/raidfile.conf
SEE ALSO
raidfile-config(8), bbstored.conf(5)
AUTHORS
Ben Summers
Per Thomsen
James O'Gorman
Box Backup 0.11 10/28/2011 RAIDFILE.CONF(5)