Novell NETWARE 6-DOCUMENTATION Manual page 780

In the following illustration, several smaller disks are mirrored to partitions on
one larger disk.
Mirrored to
Disk 3
partition 3
Mirrored to
Disk 2
partition 2
Mirrored to
Disk 1
partition 1
Mirrored to
Disk 0
partition 0
To mirror partitions you must enable Hot Fix. For information about Hot Fix,
see "Redirecting Bad Blocks" on page
With Hot Fix enabled, a section of the partition is set aside as the Hot Fix/
Mirror object, which holds data tables for both Hot Fix and mirroring. The
tables store information about which data blocks are bad, which blocks have
been redirected, which partitions are mirrored, and whether the partitions are
synchronized or not.
Setting up Hot Fix is much easier when you create the partition. To add Hot
Fix after you create a partition and add volumes, you must delete the volumes
from the partition, add Hot Fix, then restore the volumes from a backup. When
you restore volumes from a backup, make sure you have enough space on the
partition to accommodate the volumes after you add Hot Fix to the data area.
The following are important concepts for mirroring partitions:
Mirrored partitions must have the same partition type of mirror group as
the group you assign it to. This means that NSS partitions can be mirrored
only to other NSS partitions. The same criteria applies to traditional
partitions.
Mirrored partitions must be compatible in data area size. This means the
new partition must be at least the same size or slightly larger than the
other partitions in the group. The physical size (combined data and Hot
Fix size) of the partition must be at least 100 KB, but no more than 120
MB larger than the data size of the existing partitions in the mirror
group.(Note: The file system adjusts the Hot Fix size within the legal
Disk 4
18.
Overview of Server Disks and Storage Devices
NetWare
Partition 3
NetWare
Partition 2
NetWare
Partition 1
NetWare
Partition 0
17