Excito B3, User Manual

Page: 96 / 154

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RAID
raid
The RAID function in B3 combines the /home partition and one external hard
disk into a single logical unit.
B3 supports RAID 1 that duplicates data across the internal disk and one eSATA
disk, providing full redundancy. The /home partition and the external hard disk
each store exactly the same data, at the same time, and at all times. Data is not
lost as long as one disk survives a disk failure. Notice that a RAID system does
not save unintentionally deleted files. If this is the type of security you are look-
ing for, please use the integrated backup function instead: read chapter “Back-
up” on page 107. For maximum security: combine RAID and a frequent backup
job!
At any given moment, the contents of /home partition on B3 and the external
hard disk in the array are identical to the content of the other disk in the array.
Important
• To get out the most of your disks, use an external disk in the same size as
your internal disk in B3.
• Total capacity of the array equals the capacity of the smallest disk in the ar-
ray.
• It will take some time to create or restore a RAID array. For a 1TB disk it will
take about 4 hours. This is handheld in the background of the B3 system
and will not be indicated to the user.
• To reuse your B3 standalone without the RAID setup you have to reinstall
your B3 system.
Warning
An old RAID disk will automatically be connected and included into the B3
system upon boot, even though you have not set up your B3 for a RAID exten-
sion. It is impossible to remove the extension without reinstallation. To format
an old external RAID extended disk, connect the disk to a already running B3.
Then choose ‘Format’ in the ‘Disk -> Information’ menu.