Addonics Technologies RT93SNDHMS User manual

Technical Support
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v5.1.11
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T E C H N O L O G I E S
RAID Tower IX
(RT93SNDHMS)
User Guide

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Removing Cover of RAID Tower
IX
Loosen the 5 screws at the back of the tower for
the cover using a Philips screwdriver. Lift the
cover and pull slightly toward the rear of the tower
to disengage and remove.
Power LED: lit when RAID Tower is on.
Host LED: lit when array group is connected, blinks
during array activity.
Error LED: lit when array group has a problem, blinks
if a redundant array is rebuilding.
Back
Mini SAS
Connector
Array 1
Array 2
Array 3
Array 1 Host
Array 1 Error
Array 2 Host
Array 2 Error
Array 3 Host
Array 3 Error
Power LED

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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.
Installing drives into the
RAID Tower XIII
1. Be sure the lock on each drive doors
is in an unlock position. If not use the key
that comes with the Disk Array to unlock the
drive door. Pull on the door lever to swing
open the drive door all the way.
2. Slide a 3.5” SATA hard drive into the
drive slot with the drive connector side
facing in. Be sure to orient the hard drive
correctly as shown in the yellow label on the
inside of the drive door – with drive door
swing open at the bottom, the top of the hard
drive should face to the right. The drive
should slide all the way into the slot with
very little resistance. Forcing the drive into
the slot will cause the drive damage or
permanent damage to the Disk Array.
3. Once the drive is all the way into the
driver slot, close the door all the way until
the drive door latches securely. This will
engage power and data connection with the
hard drive. The LED light for the drive slot
should light if the Disk Array already is
powered on. You may lock the drive door
with the key.
4. To remove the hard drive from the
Disk Array, simply follow the steps 2-3 in
reverse.
Door lock
Individual Drive
Bay Door
Drive power and
LED activity
for each Drive bay
Insert Hard Drives
with top facing
right

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.

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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.
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.
Dipswitch Posion 1 2 3 4 5
Raid Mode
BZS
1
EZ
M2
M1
M0
JBOD (Individual
drives)
* FACTORY DEFAULT
SETTING
OFF OFF2OFF OFF OFF
0
OFF
ON3
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
ON
ON
OFF
ON

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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.
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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