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RAID Setting
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RAID Descriptions
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JBOD (Non-RAID): The two physical disks read as two independent hard drives in a single housing, so that two logical volumes mount on the desktop. Therefore, the computer will show two separate drives.
Note: The failure of one disk will not affect the other disk. Therefore, the data on the working drive will be intact and functioning. The system must support port multiplier to recognize both two drives of JBOD setting for eSATA connection. If not, only drive 1 will be recognized. |
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BIG (Concatenation): The two physical drives are combined so that one single yet larger logical volume mounts on the desktop, offering maximum possible capacity (the available capacities of each disk are combined).
Note: If one physical disk fails, the data on both disks will become inaccessible. If you are concerned about data security, we highly recommend using Safe configuration (RAID 1 mode). |
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Fast (RAID 0 Mode): The two physical drives are stripped together so that one larger logical volume mounts on the desktop, offering the maximum possible capacity like in Big mode (the available capacities of each disk are combined) yet with greater speed than the Big mode (the speed of each disk runs faster to a certain level).
Note: If one drive fails, the data on both disks will become inaccessible. |
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Safe (RAID 1 Mode): The two physical drives are “mirrored” (RAID 1) so that one single logical volume mounts on the desktop. All of the data on one drive will be recoverable from the other drive (the available capacity of one drive cannot exceed the available capacity of the other drive).
Note: If one physical disk fails, the data can be immediately recovered from the second disk. No data will be lost if one drive fails. |
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Safe33: This setting will configure 33% of two identical capacity drives as RAID 1 SAFE and the rest of the drives space will be combined as BIG configuration. If the capacity of two drives is not identical, then 33% of the smaller drive capacity will be set for RAID 1 SAFE while allocating that same capacity to the other drive. The rest of the capacities on both drives will be combined as BIG configurations.
Note: The system will recognize both RAID 1 SAFE and BIG configuration using USB connection. The system must support port multiplier to recognize both RAID 1 and BIG for eSATA connection. If not, only RAID 1 will be recognized. |
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Safe50: This setting will configure 50% of two identical capacity drives as RAID 1 SAFE and the rest of the drives space will be combined as BIG configuration. If the capacity of two drives is not identical, then 50% of the smaller drive capacity will be set for RAID 1 SAFE while allocating that same capacity to the other drive. The rest of the capacities on both drives will be combined as BIG configurations.
Note: The system will recognize both RAID 1 SAFE and BIG configuration using USB connection. The system must support port multiplier to recognize both RAID 1 and BIG for eSATA connection. If not, only RAID 1 will be recognized. |
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Other information
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* MB662US-2S Reset: Press the Reset button to reset the RAID Level. The LED light will remain off
during the reset process and the blue LED will turn on after the reset is completed.
* For eSATA connection, port multiplier function required for 2 RAID volumes (JBOD, SAFE33 and
SAFE50). eSATA without port multiplier function will only see the first volume.
* For eSATA connection, when changing RAID configurations using the dip switch. Drives needs to be
re-partitioned in windows.
* It is better to use the same hard drive brand and memory capacity to use the RAID functions.
* It takes about an hour to rebuild a 100GB hard drive.
* Western Digital desktop edition HDD does not fully support RAID function; only RAID (Enterprise)
edition HDD can fully operate with the RAID faction. Click HERE to see the detail information.
Caution: Changing the RAID mode destroys data stored on the MB662 series. If you have saved data on the drives, back up data before following these steps. |
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RAID Configuration Manager
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Download the configuration manager here for Windows 7 64-bit.
Download the configuration manager here for Windows XP SP2, Vista, and 2003 Server.
Download the configuration manager here for Mac OS X Leopard 10.5.2 or later.
Download the configuration manager here for Mac OS X Tiger 10.4.x.
Download the configuration manager here for Linux 32-bit / 64-bit.
Unzip the file, select Set-up file to install. After install the configuration manager you will be able to view Drive capacity, Rebuilding status and Verifying status. |
