Cavalry CAND Series, Руководство пользователя

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RAID Setting
In this section you can manage the RAID array and set up your drives. The Dual Giga NAS
supports RAID 0 and RAID 1. Two hard drives of identical capacity and make are required. If
only one drive is installed, the RAID configuration will not be available.
-RAID 0: Used where speed is the primary objective, RAID Level 0 (also called "striping") is
not redundant. This form of array splits each piece of data across both of the drives in
segments; since data is written without any form of parity data-checking, it allows for the
fastest data transfer compared to the other setups. However, if one drive becomes damaged,
the whole array can become corrupted.
-RAID 1: This mode requires 2 identical drives to implement. A RAID 1 creates an exact copy
(or mirror) of a set of data on the second drive. This is useful when reliability and backup are
more important than data capacity. The available capacity to the user will only be as large as
a single drive but when one of the hard drives fails, it can be replaced and the data rebuilt on
the new drive. To perform, RAID 1 would require several hours depending on the capacity of
the hard drive.
e.g.: 100GB requires 1 hour
500GB requires 5 hours
-JBOD: Used to combine two hard drives of different capacity and create one single larger
hard drive. If you are using two identical drives, we recommend using RAID 0 instead.
Note: Creating a RAID system will require several hours, depending on HDD capacity. Do not
turn off the power or interrupt the system in any other way during this process. We
recommend using the EXT3 file system for optimum performance and functionality.
Changing the RAID setup will require you to re-format the drives. Make sure you backup all
data before doing so.