HOME > Support & Downloads > Knowledge Base/FAQ > ICYRaid MB662 Series FAQ
 
Date Subject
Aug-04-11 ICYRaid MB662 Series FAQ

General

Notes:

Do NOT change the RAID mode when troubleshooting the enclosure doing so will erase the data on the drives for the MB662USEB-2S-1.

Please do not exchange any hard drives between the various MB662 model as they are not compatible with each other. If you have specific questions regarding this, please contact us.

Q   Enclosure stops functioning, displays only 8GB or the enclosure does not start rebuild (MB662US-2S, MB662USEB-2S-1, MB662U3-2S Only).

o    With the power on press and hold the reset button. This will refresh the enclosure and will not affect the RAID array or data. 

Q   RAID 0 versus BIG.

o    RAID 0 will provide the greatest capacity and the best performance. Two drives are striped together for double the capacity and increased transfer rates. If the drives are different, the lower of the two drives will be doubled. For example, a 1TB and a 2TB drive in RAID 0 will provide a volume with a 2TB capacity.

o    BIG mode will provide extra capacity and flexibility, but lacks any increase in transfer rates. Similarly to RAID 0, it combines drives of any size into a single volume. For example, a 1TB and a 2TB drive in BIG will provide a volume with a 3TB capacity. However, unlike RAID 0, no performance increase will happen.

Q   RAID 1 drive failure.

o    When using RAID 1 mode, the two drives will be mirrored to each other so that if one drive files, the volume will still appear to be normal, but one of the physical drives in the MB662 will non-functional. When the drive fails, the LED for that drive will blink blue and red on the front of the enclosure. Shut off the enclosure,  remove the drive and replace it with a new drive. The replacement drive should be the same capacity, brand, and revision of the failed drive to ensure the rebuilding process goes smoothly. Once the drive is inserted, close the door and the enclosure will automatically begin to rebuild the RAID array on the new drive. At this point, the LED for the new drive will begin to show purple because it is the target drive.

o    For the eSATA/USB version (MB662US-2S), the rebuild process will go at a rate of approximately 100GB per hour. So a 1TB drive should take about 10 hours. This is the same as when the unit was initially set up for RAID 1.

o    For the Firewire 400/800 & USB version, the rebuild process will also go at a rate of approximately 100GB per hour. So a 1TB drive should take about 10 hours. This will be different than the initial set up where it should have taken minutes, not hours.

Q   Recommended fan speed settings.

o    The optimal fan setting will be determined by the type of load the drives will see on a regular basis. For basic file storage and incremental back ups, a lower speed setting can be used to keep the drives running cool. For intense applications such as media editing, large back ups, or use with a server, a high setting would be recommended to make sure the drives have enough airflow. In any case, the fan should be quiet enough to not be bothersome. If the fan is extremely loud or noisy, please contact us for assistance.

 

USB 3.0 Version (MB662U3S-2S)

Q   Maximum drive capacity.

o    The MB662U3S-2S can handle up to 4TB drives in each slot, however the maximum size volume the device can handle is 8TB. Please see below for clarification on each RAID mode.

o    RAID0 & BIG: MB662U3S-2S - Maximum drive size is 4TB per slot, a total of 8TB.

o    RAID1: For the MB662U3S-2S, the same example with 4TB hard drives will appear as a 4TB volume on the system.

 

Q   How to read the RAID switches in the product manual.

o    The product manual can be confusing as to which color indicates the position of the switch. To be clear, the black space in the diagram indicates where the switch needs to be. For example, to set the unit in JBOD, switch 1 will show a black space facing down, switch 2 will show a black space facing down, and switch 3 will show a black space facing up.

Q   I am having issues formatting my 3 or 4TB hard drive.

o    You must use the DiscWizard (Seagate) / Advanced Format Utility (WD) in order to correctly use the drive with this device.

 

eSATA Version (MB662US-2S)

Q   Maximum drive capacity.

o    The MB662US-2S can handle up to 4TB drives in each slot, however the maximum size volume the device can handle is 8TB. Please see below for clarification on each RAID mode.

o    RAID0 & BIG: MB662US-2S - Maximum drive size is 4TB per slot, a total of 8TB.

o    RAID1: For the MB662US-2S, the same example with 4TB hard drives will appear as a 4TB volume on the system.

 

Q   How to read the RAID switches in the product manual.

o    The product manual can be confusing as to which color indicates the position of the switch. To be clear, the black space in the diagram indicates where the switch needs to be. For example, to set the unit in JBOD, switch 1 will show a black space facing down, switch 2 will show a black space facing down, and switch 3 will show a black space facing up.

Q   Only one drive appears when connected via eSATA.

o    If the device is configured for JBOD, this means that the eSATA port the device is connected to does not support port multiplication. Due to the lack of support, only a single drive will appear on the desktop, specifically the drive in the right side (when looking at the front of the device).

o    If the device is not configured in JBOD, check to see which mode it is in. For RAID modes 0, 1, and BIG, the drive will appear as a single volume on the system. This is because the drives have been combined (as seen in RAID 0 and BIG), or mirrored (as seen in RAID 1).

o    If neither scenario fits your situation, please connect the device via USB to make sure that both drives are functioning correctly.

o    If further assistance is needed, please contact us for technical support.

 

MB662UEAB-2S / MB662USEB-2S / MB662USEB-2S-1

Q   Will my hard drive data be erased while switching from JBOD to RAID 1 on the MB662USEB-2S-1

o    If you are to switch from a previously set RAID 1 to JBOD mode, and then switch back, please be aware that the MB662USEB-2S-1 will erase your hard drive's data.

Q   Maximum drive capacity.

o    The MB662UEAB-2S can handle up to 2TB drives in each slot, however the maximum size volume the device can handle is 2TB. Please see below for clarification on each RAID mode. 

o    The MB662USEB-2S can handle up to 3TB drives in each slot, however the maximum size volume the device can handle is 6TB. Please see below for clarification on each RAID mode.

o    The MB662USEB-2S-1 can handle up to 3TB drives in each slot, however the maximum size volume the device can handle is 6TB. Please see below for clarification on each RAID mode.

o    JBOD: 2TB drives can be used in each slot, since each individual volume will be a maximum of 2TB. For MB662US-2S, MB662USEB-2S (-1), the sizes are 3TB in each slot and maximum of 6TB.

o    RAID 0 & BIG: 2TB drives can be used in each slot, since each individual volume will be a maximum of 2TB. For MB662US-2S, MB662USEB-2S (-1), the sizes are 3TB in each slot and maximum of 6TB.

o    MB662UEAB-2S - Maximum drive size is 1TB. Drives over 1TB in RAID 0 will only appear as a 2TB volume on the system. 

o    RAID 1: The MB662UEAB-2S can use 2 x 2TB drives in each slot. Since the drives are mirrored, the volume is half of the total drive capacity. Example: 2 x 2TB drives in RAID 1 will appear as a 2TB volume on the system.  The MB662USEB-2S & MB662USEB-2S-1 will reference the lower size of the two hard drives and use as the volume size. Example: 1 x 1TB & 1 x 750GB will appear as 750GB volume on the system.

Q   How to use the daisy chain feature.

o   To utilize the daisy chain feature, use either port to connect the first unit to the system. Then the remaining port can be used to connect another Firewire device. For the hub function to work, the first unit must be turned on. If it is not turned off, the hub chipset does not receive power, therefore rendering it useless.

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