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Quick Start Guide
Dual-Bay Dock
1. Flip the switches to set the mode.
2. Insert 2.5” or 3.5” SATA drives into the dock.
One or two drives can be accessed in JBOD mode. RAID 0 and RAID 1 require two identical drives
(same model and capacity) for optimum performance. JBOD and Spanning can use any combina-
tion of drives.
1.
2.
3. 4.
Contact Us
Call: 800.238.4453 (toll-free, USA only)
805.426.1000
Email: customer support@cavalrystorage.com
Website: www.cavalry storage.com
5. 6.
1. Power light
2. Drive activity lights
3. USB 2.0
4. Mode conguration switches
5. Power
6. Power button
Caution: When using hard drives in the dock after being previously setup, make sure the mode of the dock is set to the same
mode of the hard drive as when the drives were initially set up. Insert the drives in the same order and same bay as during the
initial setup. Switching modes or bays might result in data loss.
For example, if a pair of hard drives was initially set up as RAID 0, make sure the dock is in RAID 0 mode before inserting the
hard drives again. Also, if a particular drive was in Bay-1 during the initial setup, Bay-1 must be used again for this particular
drive and vice versa.
Model#
EN-CAHDD2B-D
Windows XP (32-bit)*
000 JBOD
100 RAID 0
010 RAID 1
110 Spanning
Windows XP (64-bit)
Vista / 7 / Mac OS X 10.4+
001 JBOD
101 RAID 0
011 RAID 1
111 Spanning
= 0, = 1
Example:
0 1 0 1 0 1
*Due to operating system limitations, Windows XP (32-bit )can only access up to 2TB, even if the actual total
capacity is greater. These switch congurations will allow the computer to access up to 2TB on drives or
combinations of drives with a usable capacity greater than 2TB. DO NOT insert hard drives if the existing data totals
more than 2TB as Windows XP might overwrite or delete it.
Note: Depending on the
drives used, when
powering on, allow up to
30 seconds for both drives
to spin up to speed.
Note: Ensure a proper connection
when inserting a drive by putting it
straight down and not tilting it. If a
drive is not being detected, turn o
the dock then remove and re-insert
the drive.
3. Connect the USB and power cables then turn the dock on with the power button. Wait until
your computer detects the dock then begin transferring les. New hard drives need to be
initialized and formatted.
Caution: Removing the hard drives from the dock while it is on may result in data loss. Before turning o the dock, make
sure the hard drives are not busy as indicated by the solid green “Hard Disk Access” lights on the front of the dock.
Modes
JBOD
Accesses the two hard drives separately as “Just a Bunch Of Disks” so that two individual drives will
appear on the computer. Use this mode if accessing single drives. Usable capacity is the sum of the
drives.
RAID 0
Increases data transfer speeds as both drives are used simultaneously. A single le is “striped” or
split up and written across both drives. Both drives will be displayed as a single unit on the
computer. Usable capacity is the sum of the drives.
RAID 1
Clones or “mirrors” the same data onto both drives simultaneously so only half the total capacity of
both drives are utilized. If one drive should fail, the surviving drive will have a backup of the data
from the failed drive. The usable capacity is half the sum of the drives.
Spanning
Combines the capacity of both drives, similar to RAID 0, but instead lls up one disk rst before
lling the second disk. Usable capacity is the sum of the drives.
LED Light Guide
Disconnected Mode
If the dock is disconnected from the computer or the computer is turned o, only 1 green light will
be on and the drives are spun down. In order for the dock to be active, it needs to be connected to
a running computer.
RAID 1 – Already mirrored / synchronized
If both hard drives are already mirrored with the same data, then both LED lights will be a steady
green. When data is being transferred to the drives, then both the lights will icker.
RAID 1 – Rebuilding
If one drive is the source (original) drive, and the other is incomplete (dierent or missing les from
the source drive), then the dock will attempt to rebuild the second incomplete drive. A blinking
green light indicates which drive is the source drive during synchronization. A blinking red light
indicates which drive is the incomplete drive during synchronization. When the dock nishes
synchronizing (now mirrored), then both lights should stop blinking and stay a steady green.
RAID 1 – One-drive
With only one drive inserted, it becomes the source drive when the dock is turned on. At this point,
without a second drive inserted, the light for the inserted drive will stay a steady green. The other
slot will have a blinking red light, indicating there is no drive inserted.
Troubleshooting
I can’t see the hard drives.
Make sure the power is on and the SATA hard drives have been inserted straight in and not tilted.
Also check all the connection points as well as the USB ports on the computer as they may be
defective.
One of the drives failed in RAID 1, how do I recover my data?
When one of the drives in RAID 1 fails, you can either (A) switch the dock to JBOD mode to recover
the data from the surviving drive or (B) insert a new identical hard drive (same model and capacity)
into the other bay and it will automatically be rebuilt from the data located on the surviving drive.
Option B is recommended and will allow you to always have two copies of the data. Do not power
o the dock until rebuilding has been complete.
How do I initialize / format the hard drives?
Hard drives that have not been initialized may not show up on the computer. Go to Disk
Management (Windows) or Disk Utility (Mac) and follow the instructions to initialize and/or format
the hard drives.