AC&NC JetStor 742F User manual

742F Service Manual

Service Manual
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Table of Contents
Section: Page:
1. How to Replace the RAID Controller (ARC8006) ......................................13
2. How to Replace the Power Supply Fan Module (PSFM) ..................................23
3. How to Replace the Turbo Fan (Fan 06-1) .......................................... 28
4. How to Replace/Install HDD ............................................................... 31

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NOTE: When replacing parts, make sure to handle the parts
carefully. It is necessary to use anti-static hand gloves or
a wrist strap when handling sensitive parts, such as circuit
boards or PCBA.
Make sure that somebody is around to provide help when
needed, such as when moving the whole enclosure.
Place the screws in a proper place, so they won’t be lost or
mixed up during servicing.
When servicing, some parts need to be replaced in power-
off state. Please see table below.
Hot-Swappable Parts
(Can be replaced while online)
Not Hot-Swappable Parts
(Need to power off RAID
subsystem)
Disk Drives/Disk Trays
LCD Front Panel Module
Power Supply
-replacing one of the failed Power
Supply Module
Cache Memory Module
-upgrading memory module
in both RAID controllers
Turbo Fan (Fan 06-1)
FC Daughter Board
(single controller mode)
Expander Modules
(single or dual controller)
Bottom Boards
Middle Backplane Board

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IMPORTANT:
(1.) When the subsystem is online and a Power Supply fails,
and the replacement Power Supply module is not yet
available, don’t remove or disconnect the failed Power
Supply module. This is to maintain proper airflow within the
enclosure, since the fans will still be working.
(2.) When the subsystem (redundant controller mode) is
online and a component, such as RAID Controller module or
Expander module, fails and the replacement is not yet
available, in order to maintain proper airflow within the
enclosure, the failed module can be disconnected just about
an inch but not entirely removed from the slot. Another
option is to use a cover plate to temporarily cover the slot of
the removed module. This is needed to maintain proper
airflow within the enclosure.
(3.) When replacing a failed component online, it is not
recommended to remove the failed component for a long
period of time; proper air flow within the enclosure might
fail causing high controller / disk drive temperature.
Single Controller RAID Subsystem

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Dual Controller RAID Subsystem
NOTE: Each Power Supply Fan Module has 1 Power Supply and 5
Fans.
For the purpose of hardware monitoring, the RAID
enclosure is logically divided into two enclosures.
The functions of the Expander Modules are as follows:
Module: Function/Description:
Expander Module 1-1
(for Controller 1)
Monitors Enclosure 1 (Disk slots 1 to
21, Power Supply 01-1, Fans 01-1,
02-1, 03-1, 04-1, and 05-1, and
Turbo Fan 06-1).
Note: “-1” means enclosure 1.
Expander Module 2-1
(for Controller 2) Same function as Expander 1-1
Expander Module 1-2
(for Controller 1)
Monitors Enclosure 2 (Disk slots 22
to 42, Power Supply 01-2, Fans 01-
2, 02-2, 03-2, 04-2, and 05-2.
Note: “-2” means enclosure 2.
Expander Module 2-2
(for Controller 2) Same function as Expander 1-2

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Before servicing the RAID subsystem, please see the following table for
additional information about specific problem and what to replace.
Problem What to do / What to Replace
The LCD Display Panel does
not show any character. No
light in LCD Display Panel.
1. Check first if the LCD cable is properly
connected to the LED front panel module
and LCD display module. Refer to Section
2 step F and J.
2. Try to replace the LCD cable. Refer to
Section 2 Step J.
3. If the LCD cable is properly connected or
already replaced but the problem still
exists, replace the LCD display module.
Refer to Section 2.
The LCD Display Panel has
blue background light but
does not show any character.
1. Check first if the RAID controller(s) can
start-up normally (not hang). If
controller(s) cannot boot-up normally,
check the RAID controller(s) or expander
module(s).
2. If the RAID controller(s) can start-up
normally, check if the LCD cable is
properly connected to the LED front panel
module and LCD display module. Refer to
Section 2 step F and J.
3. Try to replace the LCD cable. Refer to
Section 2 Step J.
4. If there is still problem after checking or
replacing the LCD cable, replace the LCD
display module (PRO-275-G). Refer to
Section 2.

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Problem What to do / What to Replace
Some or all HDD LEDs
(Activity LEDs and Power
On/Fail LED) on front panel do
not light up after power on.
1. Check first if the RAID controller(s) can
start-up normally (not hang). If
controller(s) cannot boot-up normally,
check the RAID controller(s).
2. Make sure all expander modules are
working fine. If there is a failed
expander module, check or replace it
first. Refer to Section 10.
3. If the RAID controller(s) can start-up
normally, check if the switch cable and
LCD cable are properly connected to the
LED front panel module. Refer to
Section 1 step E and F.
4. Check if there disk drive in the
particular slot in which HDD LED does
not light up. Try to move the disk drive
in another slot and see if the HDD LED
will light up. And try another disk drive
in the particular slot with HDD LED not
working.
5. If the disk drive is detected in RAID
Manager GUI in the particular slot, but
the HDD LED still has problem, replace
the LED front panel module. Refer to
Section 1.

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Problem What to do / What to Replace
The RAID subsystem does not
start up properly. Both RAID
controllers are in Faulty state
(Fault LED is blinking red).
1. Check the cable of Switch Mechanism in
both RAID controllers, if cable is properly
connected. Refer to Section 4 Step D.
2. To verify if the 2 RAID controllers are
working fine, power off the enclosure,
disconnect the cable of Switch Mechanism
in both RAID controllers, and then power
on the enclosure. If both controllers are
working fine, then the problem is in the
Switch Mechanism. Refer to Section 6 on
how to replace the switch mechanism.
3. Make sure none of the 4 expander
modules are failed (when Fault LED is
red). If so, check or replace the failed
expander module. Refer to Section 10.
4. If all 4 expander modules are good, verify
if each individual RAID controller is
working fine. Power off the enclosure,
remove one RAID controller and the
corresponding 2 expander modules, power
on, and check if the single RAID controller
can work fine. Then repeat the test to
check the other RAID controller in single
controller mode. If both RAID controllers
can work in single controller mode, then
the problem could be with the switch
mechanism. Check or replace the switch
mechanism. Refer to Section 6.
5. If switch mechanism has been replaced
but controller still fails, remove and
reinsert the RAM module, or try to replace
with a new one. Refer to Section 5.
6. If the cable of switch mechanism are
disconnected in both RAID controllers, all
4 expander modules are good, and one or
both RAID controllers fail, replace the
failed RAID controller(s). Refer to Section
4.

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Problem What to do / What to Replace
One RAID controller does not
start up properly. The FLT
LED is blinking red.
1. Check the cable of Switch Mechanism in
the faulty RAID controller, if cable is
properly connected to the RAID controller.
Refer to Section 4 Step D.
2. Remove and reinsert the RAM module
(cache memory) in the faulty RAID
controller. Refer to Section 5 how to
remove and reinsert the RAM module.
3. Make sure none of the 4 expander
modules are failed (when Fault LED is
red). If so, check or replace the failed
expander module. Refer to Section 10.
4. If problem still exist, replace the faulty
RAID controller. Refer to Section 4.
Problem What to do / What to Replace
The Volume Sets (LUNs) are
not detected in one Fibre port
or both Fibre ports (host
channels).
1. Make sure that the Fibre cable(s) is/are
properly connected to the Fibre HBA and
to the Fibre host port(s).
2. Make sure the Fibre HBA and SFP
module(s) are working fine.
3. Verify Fibre Channel Config in Raid
Manager GUI -> System Controls, if
Channel 0 (or 1) Speed – Current Speed
shows “Unknown”, and Channel 0 (or 1)
Topology – Current Topology shows
“None”, then there is no Fibre connectivity
on that particular Fibre host port or
channel. Try to change both the FC Speed
and Topology settings to “Auto”, and then
verify if it helps.
4. Make sure that the LUN host channel
mapping on Fibre port is correct. Verify
this in Volume Set Information -> Fibre
Ch/Lun. Fibre Ch 0 means channel 0.
5. If channel mapping is correct but the
problem still exists, try mapping the LUN
to the other Fibre port (example: from
Fibre Ch 0 to Fibre Ch 1). If one Fibre port
works, while the other does not, replace
the daughter board. Refer to Section 7.
6. If both Fibre ports do not work, replace
the daughter board. Refer to Section 7.

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Problem What to do / What to Replace
When the main Power
Switch is turned on, the
enclosure does not power
on.
1.Make sure that the power cords are
connected to the 2 PSFM (Power Supply fan
Module), and that the power on switch of the
2 PSFM are turned on. Verify that the Power
Status LED becomes red when the power
cable is inserted in the AC input power
socket.
2. If the power cords have power from power
source and are properly connected, but the
PSFM Power On/Fail LED shows red after
turning on the main Power Switch, try to
swap the PSFM with the other PSFM.
3. If both the Power On/Fail LEDs of 2 PSFM
shows red when power cords are connected,
but the enclosure still does not power on,
check the main power switch cable if properly
connected. Refer to Section 3 step E.
4. If the main power switch cable if properly
connected but enclosure still does not power
on, replace the main power switch. Refer to
Section 3.
One Power Supply failed.
The alarm beeper sounds,
the controller log shows
“Ex Power 01-x Failed”,
and the Hardware Monitor
shows “Power 01-x
Failed”. The Power Status
LED on the PSFM is red.
1. Make sure that the power cord connected to
the PSFM is good. Check that there is power
from power source (where power cord gets
its power). Verify that the Power Status LED
becomes red when the power cord is inserted
in the AC input power socket.
2. Try to remove and reinsert the PSFM (wait for
several seconds before reinserting).
3. If the power supply on the PSFM still fails,
replace the PSFM. Refer to Section 8.
One fan in the PSFM is not
working. The alarm beeper
sounds, the Hardware
Monitor shows the Fan
RPM is 0 (zero). The Fan
Fail LED on the PSFM is
red.
1. Check which PSFM the Fan Fail LED is red, or
check which “Enclosure” the failed fan is
located. Then replace the PSFM where the
failed fan is located. Refer to Section 8.

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Problem What to do / What to Replace
One or more disk drives
is/are not detected on one
or more slots.
1. Make sure the disk drive (SATA or SAS) is
good. Verify that the Power On/Fail LED is
green (good). If LED is red, try the disk drive
in another disk slot.
2. If disk drive is SATA and RAID subsystem is
in dual controller mode, check or replace the
dongle board connected to the SATA disk
drive. Make sure the dongle board is working
fine. Swap with another dongle board, if
possible, and try again the disk drive in
another slot.
3. Make sure the firmware version of Expander
modules and RAID controller expander are all
the same. If not, upgrade each expander to
the same (common) version.
4. Try to replace the suspected Expander
module (see Section 10) or RAID controller
(see Section 4).
5. If the disk drive is good, the dongle board is
good, and Expander firmware are all same,
and Expander module and RAID controller
have been checked/replaced, but a disk drive
is always not detected on the same slot but
works in another slot, replace the bottom
board. Refer to Section 9. And take note
which disk slot have problem and replace the
corresponding bottom board. See the second
picture in Section 9 step G.

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Problem What to do / What to Replace
The Turbo Fan (Fan 06-1)
is failed. The Hardware
Monitor shows the Fan
RPM is 0 (zero). The Turbo
Fan Status LED is red.
1. Check fan cable inside the Turbo Fan, if
properly connected. Refer to Section 11 step
C.
2. Try to replace the Fan Board, or replace the
Turbo Fan. Refer to Section 11 step C.
3. If a replacement Turbo Fan module is
available, replace the Turbo Fan module.
Refer to Section 11.
One or both RAID
controllers and one or both
power supply modules are
not detected in the
controller slot or power
supply slot.
1. Make sure the RAID controller(s) or power
supply module(s) are good. Try the controller
or power supply in another enclosure.
2. If the controller and power supply are good
but cannot be detected in same controller or
power supply slot, replace the middle
backplane board. See Section 12.

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1. How to Replace the RAID Controller (ARC8006)
A. When a RAID controller fails, the FLT LED will be blinking red indicating
controller failure Shutdown the Raid System. Loosen the thumbscrews on
the sides of the failed RAID controller.
Loosen the 2 thumbscrews on both sides of the failed controller.
B. Remove all cables from the panel of the failed RAID controller.
The cables from the Failed Controller are removed.

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C. Pull the handle bar of the controller drawer about 90°, and then remove
the controller drawer from the slot.
(NOTE: The picture is not from actual machine model but from similar RAID series)

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S. Insert the controller drawer into the controller slot. The FLT LED will still
be blinking red. NOTE: Don’t tighten yet the 2 thumbscrews.
The replacement Controller is inserted
(NOTE: The picture is not from actual machine model but from similar RAID series)

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T.Reconnect all cables.
All cables on the replacement Controller are reconnected / reinserted.
(NOTE: The picture is not from actual machine model but from similar RAID series)
U. Press the handle bar towards the side of the controller drawer and make
sure the handle bar is well attached to the controller drawer side. And
then properly tighten the 2 thumbscrews.
NOTE: When the thumbscrews are tightened, the FLT LED will be
off and one short beep will be heard. This means the controller
status is OK.
An alarm will still sound. In this time, the new/replacement
controller will take over the original IO jobs of the failed controller.

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IMPORTANT: The thumbscrews must be properly tightened so that the
FLT LED will be off and the controller status will become
OK.
V. After the inserted controller has taken over the original IO jobs of
the failed controller, the alarm sound will be off. B controllers will be
back to normal operational mode.
NOTE: To verify the status of the 2 RAID controllers, login to the
Raid Manager GUI on one of the RAID controller and check in
System Information the Dual Controller State; it should be “Dual
Operational”.

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2. How to Replace the Power Supply Fan Module (PSFM)
NOTE: Each Power Supply Fan Module (PSFM) has one Power Supply and
five Fans. PSFM 1 has Power 01-1, Fan 01-1, Fan 02-1, Fan
03-1, Fan 04-1, and Fan 05-1, and PSFM 2 has Power 01-2,
Fan 01-2, Fan 02-2, Fan 03-2, Fan 04-2, and Fan 05-2.

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Power 01-1 and Fan 01-1 to 05-1
NOTE: Fan 06-1 is included in fans being monitored in Enclosure #1

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Power 01-2 and Fan 01-2 to 05-2
IMPORTANT:
When the Power Supply of a PSFM fails, the PSFM need not be removed
from the slot if replacement is not yet available. The fans will still
work and provide necessary airflow inside the enclosure.
After replacing the Power Supply Fan Module and turning on the
Power On/Off Switch of the PSFM, the Power Supply will not
power on immediately. The Fans in the PSFM will spin-up until the
RPM becomes stable. When Fan RPM is already stable, the RAID
controller will then power on the Power Supply. This process takes
more or less 30 seconds. This safety measure helps prevent
possible Power Supply overheating when the Fans cannot work.
NOTE: If a Fan fails, the whole PSFM module can be replaced.
The PSFM, with failed Fan, can be checked or repaired via
RMA.
NOTE: Before replacing a PSFM, turn off the PSFM switch and disconnect the
power cable from the AC Power Input Socket.