Addonics Technologies RT134DAMS User manual

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v5.1.11
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T E C H N O L O G I E S
User Guide
RAID Tower XIII
(RT134DAMS)

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Screws
Removing Cover of Storage Tower
XIII
Loosen the 3 screws at the back of the tower for each
side panel using a Philips screwdriver. Push each side
panel toward the rear of the tower to disengage and
remove.
Overview
1. Front panel power switch
2. Power LED
3. Hard drive activity LEDs (each array)
4. Hard drive bay power switches (each array)
5. Audible alarm reset button (each array)
6. Fan LED (each array)
7. Temperature LED (each array)
Each of the Disk arrays in RAID Tower XIII is equipped
with an audible alarm. Should the temperature or fan
speed fall out of range, the appropriate LED will glow
amber or red and the audible alarm will sound.
Each disk array appears on the SAS connection in order
from top to bottom. The top array will appear on channel
1, the second on channel 2, third on channel 3, and the
bottom array on channel 4.
Installation
1. Be sure front and rear power switches are in the
OFF position.
2. Connect power cord to the unit.
3. Connect cable from SAS connector to host controller.
4. Turn on main power switch on the back of the unit. The
power switch on the front may be used for normal
peration.
Drive Installation
1. Mount hard disk on disk array tray.
2. Insert tray into array cabinet with lever open and eject
button side up.
3. Press the drive firmly into position, close the eject lever
and turn the lock if desired.
SAS
connector
AC input
switch Main AC switch
3
7
6
4
5
1
2

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Resetting the RAID Mode
NOTE: This procedure destroys all RAID data. It should not harm individual drives
or their contents; however, creating or running backups of all data is strongly
recommended before proceeding.
1. Power down the unit and set the dip switch to the factory default setting (all
switches OFF).
2. While holding the SET button with a ballpoint pen, turn the unit on. A long beep will
sound from the Port Multiplier. The SET button may be released once the long beep
stops.
Setting or Modifying the RAID Mode
NOTE: Setting or modifying the RAID mode destroys all data.
1. Follow the procedure for resetting the RAID Mode.
2. Power down the unit and set the dip switch to the desired RAID Mode.
3. While holding the SET button with a ballpoint pen, turn the unit on. A long beep will
sound from the Port Multiplier. The SET button may be released once the long beep
stops.
If instead of a long beep the Port Multiplier sounds a series of short beeps, an error
has occurred during configuration of the array.
Windows users may install the JMicron HW RAID Manager application located on
the SATA Controller CD. In the CD, browse to Configuration Utilities → JMB393. The
JMicron HW RAID Manager can be used to create, modify, and monitor the health
status of the RAID drives, and provide status alerts. When configuring the RAID
mode using the RAID Manager application, it is strongly recommended to leave the
dip switch in the factory default setting.
Using identical drives for all settings other than JBOD or LARGE is strongly
recommended. Creating a LARGE array using drives that have different properties
will use all space on all members, and performance will match that of the member in
use during any particular I/O operation. Creating a RAID using drives that are not all
the same size will result in all members using only as much space as the smallest
member. Creating a RAID using drives that have different performance will degrade
the overall performance of the array.

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BZS Switch (SW1:1):
The BZ switch is used to silence the audible alarm buzzer. The OFF position
permits the audible alarm, and the ON position silences the audible alarm. The BZ
switch has immediate effect.
EZ Switch (SW1:2):
The EZ (spare) switch inhibits spares when ON. When in the OFF position, all
individual drives (not defined as members of an array) are considered spare.
Should a RAID become degraded, when the EZ switch is in the OFF position a
spare drive will be used automatically to rebuild the RAID, if present. EZ mode is
determined when the unit is powered up. Changing the switch will have no effect
until the unit has been re-powered.
RAID Mode Switches M2, M1, M0 (SW1:3 – SW1-5)
The RAID Mode switches define what type of RAID will be initialized when the unit
is powered up while the RAID Mode button is held down. Each type of RAID has
different properties and requirements, as follows:
1 Audible alarm is recommended at all times.
2 EZ mode has no effect in JBOD mode.
3 Disabling EZ for RAID 0 and LARGE is strongly recommended.
Raid Mode
BZS1
EZ
M2
M1
M0
JBOD (Individual
drives)
* FACTORY DEFAULT
SETTING
OFF OFF2OFF OFF OFF
0 OFF ON
3
ON ON ON
1 or 10
OFF
OFF
ON
ON
OFF
3
OFF
OFF
ON
ON
OFF
5
OFF
OFF
OFF
ON
OFF
CLONE OFF OFF OFF
ON
ON
LARGE OFF
ON3
ON
OFF
ON

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JBOD Mode (Individual Drives)
Number of drives: at least 1
Unit capacity: N/A (100% of each individual drive)
Spares: no
Fault tolerance: none
JBOD mode offers all connected units to the host adapter, no RAID is defined at all.
NOTE: JBOD mode requires a SATA controller featuring Port Multiplier support for
eSATA connections.
NOTE: Optical drives can only be configured as JBOD using an eSATA connection.
RAID 0 (Stripe set)
Number of drives: at least 2
Unit capacity: size of each member times number of members.
Spares: no
Fault tolerance: none - if any member is lost all data is lost.
RAID 0 “stripes” the file system across the array by placing sectors of data
sequentially between drives in a specific order.
RAID 1 or 10 (Mirror set, Stripe of mirror sets)
Number of drives: 2 (RAID 1) or 4 (RAID 10).
Unit capacity: size of one member (RAID 1) or size of two members (RAID 10).
Spares: yes – if EZ mode is not disabled and 3 (RAID 1) or 5 (RAID 10) drives are
present, the array will be initialized with a spare.
Fault tolerance: RAID 1 can withstand the loss of one drive without losing data.
RAID 10 can withstand the loss of one drive from each mirror set without losing
data.
RAID 1 works by duplicating the exact same data on two drives.
RAID 10 works by using two RAID 1 sets configured as members of a RAID 0.
Disks 1 and 2 are mirrored, disks 3 and 4 are mirrored, and the two mirror sets are
striped together.

RAID 3 (Stripe set with dedicated parity)
Number of drives: at least 3
Unit capacity: size of one member times number of members minus one.
Spares: yes
Fault tolerance: can withstand the loss of one drive without losing data.
RAID 3 works by striping data for individual I/O blocks across all members except
one, which contains parity data for the stripe set computed by the Port Multiplier.
RAID 5 (Stripe set with striped parity)
Number of drives: at least 3
Unit capacity: size of one member times number of members minus one.
Spares: yes
Fault tolerance: can withstand the loss of one drive without losing data.
RAID 5 works by striping entire I/O blocks across all members of the set, with each
member taking turns carrying parity data computed by the Port Multiplier.
CLONE (Mirror set)
Number of drives: at least 2
Unit capacity: size of one member.
Spares: yes
Fault tolerance: can withstand the loss of any number of drives without losing data
as long as at least one complete member remains online.
CLONE mode works the same way as RAID 1, by maintaining a complete copy of
the entire set of data on each drive.
LARGE (Spanned set)
Number of drives: at least 2
Unit capacity: 100% of all drives together regardless of differences in size
Spares: no
Fault tolerance: cannot withstand the loss of any drives without losing data.
However, some data may be recovered as long as the drive(s) carrying the file
system data (boot record, directory, etc.) remain online.
LARGE mode is neither a RAID nor is it a JBOD. It works by declaring the sum of
all available space of the member drives as a single unit, without striping the data.
As each member is filled, new data is stored on the next.
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Notes about Spare Drives
If EZ mode is disabled (SW1:2 ON), all individual drives not configured as array
members will be offered to the host adapter as separate units.
To create an array with one or more spares, set or modify the RAID mode using
fewer than 5 members, while the spares are disconnected from the Port Multiplier.
When EZ mode is enabled, individual drives connected when an array is present
are considered spare.
Spare drives must be equal to or larger in size than the smallest member.
When any type of array is defined, individual units will be considered spare. RAID 0
and LARGE arrays are not fault-tolerant and spare drives will not be useful;
therefore, disabling EZ for these arrays is recommended.
When a spare drive is present and a fault-tolerant RAID (1, 10, 3, or 5) is defined,
EZ mode will automatically rebuild any available spares into the array.
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