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Dell SC5020 Storage System
Owner’s Manual
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Notes, Cautions, and Warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Copyright © 2017 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its
subsidiaries. Other trademarks may be trademarks of their respective owners.
2017 - 06
Rev. A
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Contents
About This Manual............................................................................................................. 5
Revision History..................................................................................................................................................................5
Audience............................................................................................................................................................................ 5
Contacting Dell...................................................................................................................................................................5
1 SC5020 Storage System Hardware................................................................................. 6
SC5020 Storage System Front-Panel Features and Indicators........................................................................................... 6
SC5020 Storage System Back-Panel Features and Indicators............................................................................................ 7
SC5020 Storage System Drives......................................................................................................................................... 8
SC5020 Storage System Drive Numbering.........................................................................................................................8
SC5020 Storage Controller Features and Indicators .......................................................................................................... 9
SC5020 Storage Controller.......................................................................................................................................... 9
2 Replacing SC5020 Storage System Components.......................................................... 12
Safety Precautions............................................................................................................................................................12
Installation Safety Precautions.................................................................................................................................... 12
Electrical Safety Precautions.......................................................................................................................................12
Electrostatic Discharge Precautions............................................................................................................................13
General Safety Precautions.........................................................................................................................................13
Bezel.................................................................................................................................................................................13
Remove the Front Bezel..............................................................................................................................................13
Install the Front Bezel..................................................................................................................................................14
Hard Drives ...................................................................................................................................................................... 14
Identify the Failed Drive...............................................................................................................................................14
Remove the Failed Drive............................................................................................................................................. 15
Install the Replacement Drive......................................................................................................................................15
Power Supply/Cooling Fan Modules................................................................................................................................. 15
Identify the Failed Power Supply.................................................................................................................................15
Identify the Failed Cooling Fan.................................................................................................................................... 16
Replace a Power Supply/Cooling Fan Module.............................................................................................................16
Storage Controllers............................................................................................................................................................17
Before Working Inside an SC5020 Storage Controller................................................................................................. 18
Storage Controller Service Bae................................................................................................................................ 18
Storage Controller.......................................................................................................................................................19
Storage Controller Cover.............................................................................................................................................21
Battery Backup Unit...................................................................................................................................................23
Riser 1.........................................................................................................................................................................24
I/O Card.....................................................................................................................................................................26
Mezzanine Card......................................................................................................................................................... 29
Rack Rails.........................................................................................................................................................................32
Remove the Rack Rails...............................................................................................................................................32
Install the Rack Rails...................................................................................................................................................32
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Power Up the Storage Center Hardware.......................................................................................................................... 33
3 SC5020 Storage System Technical Specications........................................................ 34
Technical Specications....................................................................................................................................................34
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About This Manual
This manual describes the features and technical specications of an SC5020 storage system.
Revision History
Document Number: 680-138-001
Revision Date Description
A June 2017 Initial release
Audience
The information provided in this manual is intended for use by Dell end users.
Contacting Dell
Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some
services might not be available in your area.
To contact Dell for sales, technical support, or customer service issues, go to www.dell.com/support.
• For customized support, type your system service tag on the support page and click Submit.
• For general support, browse the product list on the support page and select your product.
About This Manual
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1
SC5020 Storage System Hardware
The SC5020 storage system ships with Dell Enterprise drives, two redundant power supply/cooling fan modules, and two redundant
storage controllers.
Each storage controller contains the front-end, back-end, and management communication ports of the storage system.
SC5020 Storage System Front-Panel Features and Indicators
The front panel of the SC5020 contains power and status indicators, and a system identication button.
In addition, the hard drives are installed and removed through the front of the storage system chassis.
Figure 1. SC5020 Storage System Front-Panel View
Item
1 Power indicator Lights when the storage system power is on
2 Status indicator Lights when at least one power supply is supplying power to the storage
3 Identication button Blinking blue continuously – A user sent a command to the storage system to
6
Name Icon Description
• O – No power
• On steady green – At least one power supply is providing power to the
storage system
system
• O – No power
• On steady blue – Power is on and rmware is running
• Blinking amber – Fault detected
make the LED blink so that the user can identify the storage system in the
rack.
• The identication LED blinks on the control panel of the chassis, to allow
users to nd the storage system when looking at the front of the rack.
SC5020 Storage System Hardware
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Item Name Icon Description
• The identication LEDs on the storage controllers also blink, which allows
users to nd the storage system when looking at the back of the rack.
4 Hard drives — Can have up to 30 internal 2.5-inch SAS hard drives
SC5020 Storage System Back-Panel Features and Indicators
The back panel of the SC5020 contains the storage controller indicators and power supply indicators.
Figure 2. SC5020 Storage System Back-Panel View
Item
1 Power supply/cooling
2 Storage controller (2) — Each storage controller contains:
Name Icon Description
Contains a 1485 W power supply and fans that provide cooling for the storage
fan module (2)
system, with AC input to the power supply of 200–240 V. In Dell Storage
Manager, the power supply/cooling fan module on the left side of the back
panel is Power Supply 1 and power supply/cooling fan module on the right side
of the back panel is Power Supply 2.
An LED behind the LED handle indicates whether the power supply has AC/
input power.
• Green – A valid power source is connected to the power supply and the
power supply is operational.
• Not lit – The power supply is o or the power source has a fault.
• Mezzanine card with four SFP+ ports or four RJ45 10GBASE-T ports
• One expansion slot a front-end I/O card:
– Fibre Channel
– iSCSI
– SAS
• SAS expansion ports – Two 12 Gbps SAS ports for back-end connectivity
to expansion enclosures
• USB port – Single USB 2.0 port
• MGMT port – Embedded Ethernet port for system management
• Serial port – Micro-USB serial port used for an alternative initial
conguration and support-only functions
3 Power switch (2) — Controls power for the storage system. Each power supply/cooling fan module
has one power switch.
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Item Name Icon Description
4 Power supply/cooling
fan module LED handle
5 Power socket (2) — Accepts the following standard computer power cords:
—
The handle of the power supply/cooling fan module indicates the DC power
status of the power supply and the fans.
• Not lit – No power
• Solid green – Power supply has valid power source and is operational
• Blinking amber – Error condition in the power supply
• Blinking green – Firmware is being updated.
• Blinking green then o – Power supply mismatch
• IEC320-C13 for deployments worldwide
• IEC60320-C19 for deployments in Japan
SC5020 Storage System Drives
The SC5020 storage system supports Dell Enterprise Plus Premium drives.
The drives in the SC5020 storage system are installed horizontally. The indicators on the drives provide status and activity
information.
Figure 3. SC5020 Storage System Drive Indicators
Item
1 Drive activity indicator
2 Drive status indicator
Control/Feature Indicator Code
• Blinking green – Drive has I/O activity
• Steady green – Drive is detected and has no faults
• Steady green – Normal operation
• Blinking green – A command was sent by Dell Storage Manager to the drive to make
the LED blink so that users can identify the drive in the rack.
• Blinking amber – Hardware or rmware fault
SC5020 Storage System Drive Numbering
An SC5020 holds up to 30 drives, which are numbered from left to right in rows starting from 0 at the top-left drive. Drive numbers
increment from left to right, and then top to bottom such that the rst row of drives is numbered from 0 to 4 from left to right, and
the second row of drives is numbered from 5 to 9 from left to right.
The Dell Storage Manager identies drives as XX-YY, where XX is the number of the unit ID of the storage system and YY is the
drive position inside the storage system.
Figure 4. SC5020 Drive Numbering
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SC5020 Storage System Hardware
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SC5020 Storage Controller Features and Indicators
The SC5020 storage system includes two storage controllers in two interface slots.
SC5020 Storage Controller
The following gure shows the features and indicators on an SC5020 storage controller.
Figure 5. SC5020 Storage Controller
Item Control/Feature Icon Description
1 I/O card slot
Fibre Channel I/O card – Ports are numbered 1 to 4 from left to right
• The LEDs on the 16 Gb Fibre Channel ports have the following meanings:
– All o – No power
– All on – Booting up
– Blinking amber – 4 Gbps activity
– Blinking green – 8 Gbps activity
– Blinking yellow – 16 Gbps activity
– Blinking amber and yellow – Beacon
– All blinking (simultaneous) – Firmware initialized
– All blinking (alternating) – Firmware fault
• The LEDs on the 32 Gb Fibre Channel ports have the following meanings:
– All o – No power
– All on – Booting up
– Blinking amber – 8 Gbps activity
– Blinking green – 16 Gbps activity
– Blinking yellow – 32 Gbps activity
– Blinking amber and yellow – Beacon
– All blinking (simultaneous) – Firmware initialized
– All blinking (alternating) – Firmware fault
iSCSI I/O card – Ports are numbered 1 to 4 from left to right
NOTE: The iSCSI I/O card supports Data Center Bridging (DCB), but
the mezzanine card does not support DCB.
• The LEDs on the iSCSI ports have the following meanings:
– O – No power
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Item Control/Feature Icon Description
– Steady Amber – Link
– Blinking Green – Activity
SAS I/O card – Ports are numbered 1 to 4 from left to right
The SAS ports on SAS I/O cards do not have LEDs.
2 Identication LED Blinking blue continuously – A command was sent by Dell Storage Manager to
the storage system to make the LED blink so that users can identify the
storage system in the rack.
The identication LED blinks on the control panel of the chassis, which allows
users to nd the storage system when looking at the front of the rack.
The identication LEDs on the storage controllers also blink, which allows
users to nd the storage system when looking at the back of the rack.
3 Cache to Flash (C2F)
• O – Running normally
• Blinking green – Running on battery
4 Health status
• O – Unpowered
• Amber – Powering up
• Blinking amber
– Slow blinking amber (2s on, 1s o) – Controller hardware fault was
detected. Use Dell Storage Manager to view specic details about the
hardware fault.
– Fast blinking amber (4x per second) – Power good and the pre-
operating system is booting
• Blinking green
– Slow blinking green (2s on, 1s o) – Operating system is booting
– Blinking green (1s on, 1s o) – System is in safe mode
– Fast blinking green (4x per second) – Firmware is updating
• Solid green – Running normal operation
5 Serial port (micro USB) Used under the supervision of Dell Technical Support to troubleshoot and
support systems.
6 MGMT port — Ethernet port used for storage system management and access to Dell
Storage Manager.
Two LEDs with the port indicate link status (left LED) and activity status
(right LED):
• Link and activity indicators are o – Not connected to the network
• Link indicator is green – The NIC is connected to a valid network at its
maximum port speed.
• Link indicator is amber – The NIC is connected to a valid network at less
than its maximum port speed.
• Activity indicator is blinking green – Network data is being sent or
received.
7 USB port One USB 2.0 connector that is used for SupportAssist diagnostic les when
the storage system is not connected to the Internet.
8 Mini-SAS port B (ports 1
and 2)
Back-end expansion ports 1 and 2. LEDs with the ports indicate connectivity
information between the storage controller and the expansion enclosure:
• Steady green indicates the SAS connection is working properly.
• Steady yellow indicates the SAS connection is not working properly.
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Item Control/Feature Icon Description
9 Mezzanine card
The iSCSI ports on the mezzanine card are either 10 GbE SFP+ ports or 1
GbE/10 GbE RJ45 ports.
The LEDs on the iSCSI ports have the following meanings:
• O – No connectivity
• Steady green, left LED – Link (full speed)
• Steady amber, left LED – Link (degraded speed)
• Blinking green, right LED – Activity
NOTE: The mezzanine card does not support DCB.
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2
Replacing SC5020 Storage System Components
This chapter describes how to remove and install components of the SC5020 storage system.
This information assumes that you have received the replacement component and are ready to install it.
Safety Precautions
Always follow these safety precautions to avoid injury and damage to Storage Center equipment.
If equipment described in this section is used in a manner not specied by Dell, the protection provided by the equipment could be
impaired. For your safety and protection, observe the rules described in the following sections.
NOTE: See the safety and regulatory information that shipped with each Storage Center component. Warranty
information is included within this document or as a separate document.
Installation Safety Precautions
Follow these safety precautions:
• Dell recommends that only individuals with rack-mounting experience install the SC5020 in a rack.
• You need at least two people to lift the storage system chassis from the shipping box and to install it in the rack.
• Make sure the storage system is always fully grounded to prevent damage from electrostatic discharge.
• When handling the storage system hardware, use an electrostatic wrist guard (not included) or a similar form of protection.
The chassis must be mounted in a rack. The following safety requirements must be considered when the chassis is being mounted:
• The rack construction must be capable of supporting the total weight of the installed chassis. The design should incorporate
stabilizing features suitable to prevent the rack from tipping or being pushed over during installation or in normal use.
• When installing multiple chassis in a rack, ll from the bottom up and empty from the top down.
• To avoid danger of the rack toppling over, slide only one chassis out of the rack at a time.
Electrical Safety Precautions
Always follow electrical safety precautions to avoid injury and damage to Storage Center equipment.
• Provide a suitable power source with electrical overload protection. All Storage Center components must be grounded before
applying power. Make sure that a safe electrical earth connection can be made to power supply cords. Check the grounding
before applying power.
• The plugs on the power supply cords are used as the main disconnect device. Make sure that the socket outlets are located near
the equipment and are easily accessible.
• Know the locations of the equipment power switches and the room's emergency power-o switch, disconnection switch, or
electrical outlet.
• Do not work alone when working with high-voltage components.
• Use rubber mats specically designed as electrical insulators.
• Do not remove covers from the power supply unit. Disconnect the power connection before removing a power supply from the
storage system.
• Do not remove a faulty power supply unless you have a replacement model of the correct type ready for insertion. A faulty power
supply must be replaced with a fully operational module power supply within 24 hours.
• Unplug the storage system chassis before you move it or if you think it has become damaged in any way. When powered by
multiple AC sources, disconnect all power sources for complete isolation.
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Electrostatic Discharge Precautions
Always follow electrostatic discharge (ESD) precautions to avoid injury and damage to Storage Center equipment.
Electrostatic discharge (ESD) is generated by two objects with dierent electrical charges coming into contact with each other. The
resulting electrical discharge can damage electronic components and printed circuit boards. Follow these guidelines to protect your
equipment from ESD:
• Dell recommends that you always use a static mat and static strap while working on components in the interior of the chassis.
• Observe all conventional ESD precautions when handling plug-in modules and components.
• Use a suitable ESD wrist or ankle strap.
• Avoid contact with backplane components and module connectors.
• Keep all components and printed circuit boards (PCBs) in their antistatic bags until ready for use.
General Safety Precautions
Always follow general safety precautions to avoid injury and damage to Storage Center equipment.
• Keep the area around the storage system chassis clean and free of clutter.
• Place any system components that have been removed away from the storage system chassis or on a table so that they are not
in the way of other people.
• While working on the storage system chassis, do not wear loose clothing such as neckties and unbuttoned shirt sleeves. These
items can come into contact with electrical circuits or be pulled into a cooling fan.
• Remove any jewelry or metal objects from your body. These items are excellent metal conductors that can create short circuits
and harm you if they come into contact with printed circuit boards or areas where power is present.
• Do not lift the storage system chassis by the handles of the power supply units (PSUs). They are not designed to hold the
weight of the entire chassis, and the chassis cover could become bent.
• Before moving the storage system chassis, remove the PSUs to minimize weight.
• Do not remove drives until you are ready to replace them.
NOTE: To ensure proper storage system cooling, hard drive blanks must be installed in any hard drive slot that is not
occupied.
Bezel
The front bezel is a cover for the front panel of the SC5020 storage system.
Remove the Front Bezel
Before you remove or install hard drives in the storage system, remove the front bezel.
1. Use the system key to unlock the keylock at the left end of the bezel.
2. Lift the release latch next to the keylock.
3. Rotate the left end of the bezel away from the front panel.
4. Unhook the right end of the bezel and pull the bezel away from the storage system.
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Figure 6. Installing and Removing the Bezel
1. Keylock 2. Front bezel
Install the Front Bezel
To secure the storage system, install the front bezel.
1. Hook the right end of the replacement bezel onto the front panel of the storage system.
2. Insert the left end of the bezel into the securing slot until the release latch locks into place.
3. Secure the bezel with the keylock.
Hard Drives
The SC5020 storage system supports hot-swappable hard drives.
A minimum of 4 SSDs or 7 drives must be installed in the chassis or in an expansion enclosure. The SC5020 storage system supports
a maximum of 30 drives installed in the chassis. The drives are installed from left to right, and then top to bottom. The rst row of
drives are numbered from 0–4 from left to right, the second row of drives are numbered from 5–9 from left to right, and so on.
The Dell Storage Manager identies drives as XX-YY, where XX is the number of the unit ID of the storage system and YY is the
drive position inside the
storage system.
Figure 7. SC5020 Drive Numbering
Identify the Failed Drive
To determine which drive failed, use the Dell Storage Manager.
1. Click the Hardware tab.
2. In the Hardware tab navigation pane, select the Enclosures node.
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3. Click the Disks tab.
4. Find the drive with the status of Down.
5. Record the location of the drive from the Name column.
Remove the Failed Drive
Use this procedure to remove a failed drive from the SC5020 storage system.
Prerequisites
Before removing the drive, make sure that the following alert is displayed in the Alerts tab of Dell Storage Manager:
Drive # is ready to be removed., where # is the drive position in the storage system.
Steps
1. Remove the front bezel from the storage system.
2. Locate the failed hard drive in the storage system.
3. Press the release button to open the hard drive carrier release handle.
4. Slide the hard drive carrier out of the hard drive slot.
Install the Replacement Drive
Use this procedure to install a drive in the SC5020 storage system.
Steps
1. Open the release handle on the drive carrier and insert the hard drive carrier into the open drive slot.
2. Slide the drive into the slot until the drive carrier contacts the midplane.
3. Close the drive carrier handle to lock the drive in place.
4. Continue to push rmly until you hear a click and the drive carrier handle fully engages.
5. Clear the drive swap status from the Hardware tab in Dell Storage Manager.
For instructions, see the Dell Dell Storage Manager Administrator’s Guide.
Next steps
Install the front bezel on the storage system.
Power Supply/Cooling Fan Modules
The SC5020 storage system supports two hot-swappable power supply/cooling fan modules.
The cooling fans that cool the storage system and the power supplies are integrated into the power supply/cooling fan module and
cannot be replaced separately. If one power supply/cooling fan module fails, the second module continues to provide power to the
storage system.
NOTE: When a power supply/cooling fan module fails, the cooling fan speed in the remaining module increases
signicantly to provide adequate cooling. The cooling fan speed decreases gradually when a new power supply/cooling
fan module is installed.
CAUTION: A single power supply/cooling fan module can be removed from a powered-on storage system for no more
than 90 seconds. If a power supply/cooling fan module is removed for longer than 90 seconds, the storage system might
shut down automatically to prevent damage.
Identify the Failed Power Supply
To determine which power supply failed, use the Dell Storage Manager.
1. Click the Hardware tab.
2. In the Hardware tab navigation pane, click Power Supply.
3. Find the power supply with a status of Down.
4. Record the location of the failed power supply.
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Identify the Failed Cooling Fan
To determine which cooling fan failed, use the Dell Storage Manager.
1. Click the Hardware tab.
2. Click the Fan Sensor node.
3. Find the fan with a status of Down.
4. Record the location of the power supply in which the fan has failed.
Replace a Power Supply/Cooling Fan Module
Use this procedure to replace failed a power supply/cooling fan module.
Prerequisites
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support. For more information, see the Dell Dell
Storage Manager Administrator’s Guide.
2. Contact Dell Technical Support to let them know that you are performing a repair.
About this task
You can replace power supply/cooling fan modules one at a time without shutting down the storage system.
Steps
1. Press the power switch on the power supply/cooling fan module to turn it o.
To prevent the module from overheating, replace it within 3 minutes.
2. Remove the hook-and-loop strap that secures the power cable to the LED handle and disconnect the power cable from the
power supply/cooling fan module.
Figure 8. Removing the Hook and Loop Strap from the Power Cable
3. Push the release tab on the power supply/cooling fan module to the right and use the handle to slide the module out of the
chassis.
CAUTION: The power supply/cooling fan modules are heavy. To avoid injury, use both hands while removing the
module.
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Figure 9. Removing a Power Supply/Cooling Fan Module
1. Power supply/cooling fan module 2. Power socket
3. Release tab 4. Power supply/cooling fan module LED handle
5. Power switch
4. Slide the replacement power supply/cooling fan module into the chassis until it is fully seated and the release tab clicks into
place.
5. Connect the power cable to the power supply/cooling fan module and make sure the cable is plugged into a power outlet.
6. Secure the power cable using the hook-and-loop strap.
7. Press the power switch on the power supply/cooling fan module to turn it on.
NOTE: Allow several seconds for the storage system to recognize the power supply/cooling fan module and
determine its status. When the power supply/cooling fan module is functioning properly, the AC power status
indicator turns green and the power supply/cooling fan status indicator is o.
8. In Dell Storage Manager, make sure that the replacement power supply is recognized and shows as up and running.
Next steps
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support
2. Contact Dell Technical Support to let them know that you have completed a repair.
Storage Controllers
Use this procedure to remove a storage controller from the chassis.
Remove a storage controller if it fails or if a component inside the storage controller fails.
CAUTION: A label on the cover of each storage controller indicates the slot in which the storage controller is to be
installed. Storage controller 1 must be installed in the top slot. Storage controller 2 must be installed in the bottom slot. If
you install a storage controller into the wrong slot, the Storage Center will not function.
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Before Working Inside an SC5020 Storage Controller
Perform the following steps before working inside a storage controller.
1. Use Dell Storage Manager to edit the Storage Center settings and set the operation mode of the Storage Center to
Maintenance mode.
2. Use Dell Storage Manager to shut down the storage controller.
3. Remove the storage controller from the chassis.
4. Install the service bae into the empty slot of the chassis immediately after removing the storage controller.
CAUTION: To prevent a thermal shutdown of the storage system, the service bae must be installed within three
minutes of removing the storage controller.
5. Remove the cover of the storage controller.
Storage Controller Service Bae
The service bae is installed in an empty storage controller slot to prevent a thermal shutdown of an SC5020 storage system.
Install the Service Bae
You might need to remove a storage controller from the SC5020 storage system for repairs.
About this task
Install the service bae into the open slot within 3 minutes of removing the storage controller from the storage system chassis.
NOTE: The service bae is included with your shipment.
Steps
1. Place one hand inside the bottom of the bae.
2. Pull the top ap toward you to unfold the bae.
The bae looks like a box with an opening on each side and a ap on the top front.
3. Hold the ap of the bae and slide it into the storage controller slot up to the dotted line.
4. Leave the bae in place until you are ready to replace it with a storage controller.
Figure 10. Installing the Service Bae
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Storage Controller
Each storage controller contains the front-end, back-end, and management communication ports of the storage system.
Remove a Storage Controller
Use this procedure to remove a storage controller from the chassis.
Prerequisites
1. Locate the storage controller service bae.
CAUTION: To prevent a thermal shutdown of the storage system, the service bae must be installed within three
minutes of removing the storage controller.
2. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support. For more information, see the Dell Dell
Storage Manager Administrator’s Guide.
3. Contact Dell Technical Support to let them know that you are performing a repair.
About this task
You can replace storage controllers one at a time without shutting down the storage system.
Steps
1. Shut down the storage controller using Dell Storage Manager.
2. Make sure that all cables plugged into the storage controller are labeled.
3. Disconnect all the cables from the storage controller that was shut down.
4. Press the release tab on the storage controller.
5. Rotate the release lever away from the storage controller.
6. Grasp the release lever, and pull the storage controller part way out of the chassis.
7. Use both hands to grasp the storage controller on both sides and pull the storage controller fully out of the chassis.
Figure 11. Removing and Installing a Storage Controller
SC5020 storage system chassis 2. Storage controller
1.
3. Release lever
8. Install the service bae into the empty slot in the storage system chassis.
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Install a Storage Controller
Install the storage controller into the storage system chassis.
About this task
The cover of the storage controller indicates which slot the storage controller operates in.
• Storage controller 1 goes into the top slot.
• Storage controller 2 goes into the bottom slot.
Steps
1. Remove the service bae from the slot in the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the storage controller must be installed within
three minutes of removing the service bae.
2. Use both hands to grasp both sides of the storage controller and position it into the open slot on the chassis.
3. Push the storage controller into the slot.
4. Push the release lever toward the chassis until the storage controller clicks into place.
The storage controller is powered on and boots up.
NOTE: If the Storage Center software on the storage controller is older than the software on the existing storage
controller, the storage system updates the storage controller with the software version on the existing storage
controller. The Storage Center software update on the storage controller could take 15 to 45 minutes to complete.
5. Reconnect all the cables to the storage controller.
6. Use Dell Storage Manager to make sure that the storage controller is recognized and shows as up and running.
7. Clear the storage controller swap status from the Hardware tab in Dell Storage Manager.
For instructions, see the Dell Dell Storage Manager Administrator’s Guide.
Next steps
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support.
2. Contact Dell Technical Support to let them know that you have completed a repair.
Replace a Failed Storage Controller
Replace a failed storage controller with a replacement storage controller.
Prerequisites
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support.
2. Contact Dell Technical Support to let them know that you are performing a repair.
CAUTION: Do not power down both storage controllers. The other storage controller continues to operate when the
failed storage controller is powered down. If both storage controllers are mistakenly powered down, restart the SC5020
storage system
Steps
1. Make sure that all cables plugged into the storage controller are labeled.
2. Disconnect the cables from the failed storage controller.
3. Remove the failed storage controller from the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the service bae must be installed within three
minutes of removing the storage controller.
4. Install the service bae into the empty slot in the chassis.
5. Perform the following on the failed storage controller:
a. Remove the cover from the storage controller, and set it aside.
The label on the cover identies the chassis slot from which the failed storage controller was removed.
b. Remove the I/O card, mezzanine card, and battery backup unit from the failed storage controller.
before replacing the failed storage controller.
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The I/O card, mezzanine card, and battery backup unit are reinstalled in the replacement storage controller.
6. Perform the following on the replacement storage controller:
a. Remove the cover from the storage controller.
b. Insert the I/O card, the mezzanine card, and battery backup unit into the storage controller.
7. Take the cover from the failed storage controller, and install it on the replacement storage controller.
The label on the cover identies the correct chassis slot for the replacement storage controller.
8. Remove the service bae from the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the storage controller must be installed within
three minutes of removing the service bae.
9. Install the replacement storage controller in the chassis.
10. Reconnect the cables to the storage controller.
The storage system reads conguration information from the disks, and the storage controller is updated to the same version of
software that is running on the existing storage controller.
11. Clear the storage controller swap status from the Hardware tab in Dell Storage Manager.
For instructions, see the Dell Dell Storage Manager Administrator’s Guide.
Next steps
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support
2. Contact Dell Technical Support to let them know that you have completed a repair.
Storage Controller Cover
The storage controller cover protects the internal components of the storage controller.
Remove the Storage Controller Cover
Remove the cover of the storage controller to access the components inside.
1. Press the blue touchpoint on the storage controller cover and slide the cover back.
2. Grasp the cover on both sides, and carefully lift the cover away from the storage controller.
CAUTION: Do not operate the storage controller without the cover. Do not slide the storage controller back into the
chassis with the cover open.
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Figure 12. Remove and Install Storage Controller Cover
1.
Storage controller cover 2. Storage controller latch touch point
3. Storage controller
Replace the Storage Controller Cover
Replace the cover of the storage controller before reinserting it into the storage system chassis.
1. Place the cover on top of the storage controller.
2. Slide the cover towards the back of the storage controller until it locks in place..
CAUTION: Do not operate the storage controller without the cover.
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Figure 13. Remove the Storage Controller Cover
1.
Storage controller cover 2. Storage controller latch touch point
3. Storage controller
Battery Backup Unit
Write cache is mirrored between the two storage controllers. If a power failure occurs, the battery backup unit provides power to the
storage controller so that the write cache can be saved to an SSD within the storage controller.
Replace the battery backup unit if it begins to fail.
Remove the Battery Backup Unit
Use this procedure to remove the battery backup unit.
Prerequisites
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support. For more information, see the Dell Dell
Storage Manager Administrator’s Guide
2. Contact Dell Technical Support to let them know that you are performing a repair.
Steps
1. Shut down the storage controller using Dell Storage Manager.
2. Make sure that all cables plugged into the storage controller are labeled.
3. Disconnect the cables from the storage controller that was shut down.
4. Remove the storage controller from the chassis
CAUTION: To prevent a thermal shutdown of the storage system, the service bae must be installed within three
minutes of removing the storage controller.
5. Install the service bae into the empty slot in the chassis.
6. Verify that the battery LED on the storage controller is o. It might take a few seconds for the LED to turn o.
7. Remove the cover from the storage controller.
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8. Lift up the handle from the battery backup unit. The battery slides away from the cage connector.
Figure 14. Remove the Battery Backup Unit
1.
Battery backup unit 2. Battery cage
3. Cage battery connector
Install the Battery Backup Unit
Use this procedure to install the battery backup unit.
Steps
1. Place the battery backup unit over the battery cage in the storage controller.
2. Lower the handle until it is ush with the battery.
The battery slides into the cage connector.
3. Remove the service bae from the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the storage controller must be installed within
three minutes of removing the service bae.
4. Install the storage controller into the chassis.
5. Reconnect the cables to the storage controller.
6. Clear the storage controller swap status from the Hardware tab in Dell Storage Manager.
For instructions, see the Dell Dell Storage Manager Administrator’s Guide.
Next steps
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support.
2. Contact Dell Technical Support to let them know that you have completed a repair.
Riser 1
You might need to remove a riser when replacing some of the components of an SC5020 storage system.
Observe proper electrostatic discharge precautions when replacing a riser.
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Remove Riser 1
Use this procedure to remove riser 1.
Prerequisites
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support. For more information, see the Dell Dell
Storage Manager Administrator’s Guide
2. Contact Dell Technical Support to let them know that you are performing a repair.
Steps
1. Shut down the storage controller using Dell Storage Manager.
2. Make sure that all cables plugged into the storage controller are labeled.
3. Disconnect the cables from the storage controller that was shut down.
4. Remove the storage controller from the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the service bae must be installed within three
minutes of removing the storage controller.
5. Install the service bae into the empty slot in the chassis.
6. Remove the cover of the storage controller.
7. Lift the blue latch that secures the riser to the storage controller.
8. Grasp the touch points of the riser.
9. Lift the riser from the riser connector on the system board.
10. Remove the I/O card installed in the riser and set it aside.
Figure 15. Removing Riser 1
Riser 1 2. Alignment pin casings (2)
1.
3. Alignment pins (2)
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Install Riser 1
Use this procedure to install riser 1.
Prerequisites
Install the I/O card into the riser.
Steps
1. Use the alignment pegs on the board and the alignment casings on the riser to position the riser over the connector.
2. Lower the riser into place until the riser is fully seated in the connector.
3. Lower the blue latch to secure the riser to the chassis.
4. Replace the cover on the storage controller.
5. Remove the service bae from the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the storage controller must be installed within
three minutes of removing the service bae.
6. Install the storage controller into the chassis.
7. Reconnect the cables to the storage controller.
8. Clear the storage controller swap status from the Hardware tab in Dell Storage Manager.
For instructions, see the Dell Dell Storage Manager Administrator’s Guide.
Next steps
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support
2. Contact Dell Technical Support to let them know that you have completed a repair.
I/O Card
The storage controller supports a single I/O card in one PCI slot.
The following types of I/O cards can be used for front-end connectivity:
• Fibre Channel
• iSCSI
• SAS
Remove an I/O Card From Riser 1
Use this procedure to remove an I/O card from riser 1.
Prerequisites
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support. For more information, see the Dell Dell
Storage Manager Administrator’s Guide
2. Contact Dell Technical Support to let them know that you are performing a repair.
Steps
1. Shut down the storage controller using the Dell Storage Manager.
2. Make sure that all cables plugged into the storage controller are labeled.
3. Disconnect the cables from the storage controller that was shut down.
4. Remove the storage controller from the chassis
CAUTION: To prevent a thermal shutdown of the storage system, the service bae must be installed within three
minutes of removing the storage controller.
5. Install the service bae into the empty slot in the chassis.
6. Remove the cover of the storage controller.
7. Lift the blue latch that secures the riser to the side of the storage controller.
8. Rotate the latch toward the outside of the storage controller.
9. Remove the riser that holds the I/O card in the storage controller.
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10. Loosen the blue thumbscrew that holds the I/O card retainer against the back of the I/O card.
11. Rotate the I/O retainer away from the I/O card.
12. Grasp the I/O card by its edges, and remove it from the I/O card slot.
Figure 16. Removing I/O Card From Riser 1
1.
I/O card 2. Latch
3. Thumbscrew 4. Retainer
Install an I/O Card in Riser 1
Use this procedure to install an I/O card in riser 1.
Steps
1. Unpack the replacement I/O card, and prepare it for installation. For instructions, see the documentation accompanying the I/O
card.
2. Holding the I/O card by its edges, position the card so that the card‐edge connector aligns with the I/O card connector on the
riser.
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Figure 17. I/O Card Connector Location on Riser 1
1. Card connector
3. Insert the card‐edge connector rmly into the I/O card connector until the card is fully seated.
CAUTION: Make sure that the I/O card is fully seated in the I/O card connector. An I/O card that is not in full
contact with the connector might cause unpredictable failures in the SC5020 storage system.
4. Swing the I/O card retainer so that the retainer is ush with the back of the I/O card.
Figure 18. Installing an I/O Card in Riser 1
I/O card 2. Latch
1.
3. Thumbscrew 4. Retainer
5. Close the I/O card latch.
6. Tighten the blue thumbscrew on the back of the retainer to hold the I/O card in place.
7. Insert the riser into the storage controller.
8. Lower the latch to hold the riser in place.
9. Replace the cover on the storage controller.
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10. Remove the service bae from the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the storage controller must be installed within
three minutes of removing the service bae.
11. Install the storage controller into the chassis.
12. Reconnect the cables to the storage controller.
13. Clear the storage controller swap status from the Hardware tab in Dell Storage Manager.
For instructions, see the Dell Dell Storage Manager Administrator’s Guide.
Next steps
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support
2. Contact Dell Technical Support to let them know that you have completed a repair.
Mezzanine Card
You might need to replace a mezzanine card if it fails. Observe proper electrostatic discharge precautions when replacing a
mezzanine card.
Remove the Mezzanine Card
Use this procedure to remove the mezzanine card.
Prerequisites
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support. For more information, see the Dell Dell
Storage Manager Administrator’s Guide
2. Contact Dell Technical Support to let them know that you are performing a repair.
Steps
1. Shut down the storage controller using Dell Storage Manager.
2. Make sure that all cables plugged into the storage controller are labeled.
3. Disconnect the cables from the storage controller that was shut down.
4. Remove the storage controller from the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the service bae must be installed within three
minutes of removing the storage controller.
5. Install the service bae into the empty slot in the chassis.
6. Remove the cover of the storage controller.
7. Remove riser 1 from the storage controller.
8. Remove the screw that holds the mezzanine card in place.
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Figure 19. Remove Mezzanine Card
1.
Mezzanine card 2. Screw
3. Touch point 4. Connector
5. Release latch
9. Press the release latch and lift the back end of the mezzanine card until it becomes free of the connector.
10. Remove the mezzanine card from the storage controller.
Install the Mezzanine Card
Use this procedure to install a mezzanine card.
Steps
1. Angle the front of the mezzanine card into the slot on the front of the storage controller.
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Figure 20. Install the Mezzanine Card
1.
Mezzanine card 2. Screw
3. Touchpoint (blue dot) 4. Connector
5. Release latch
2. Press down simultaneously on the release latch and the blue dot on the rear of the mezzanine card until the card is secure in the
connector.
3. Insert and tighten the screw that secures the mezzanine card to the storage controller.
4. Replace riser 1 in the storage controller.
5. Replace the cover on the storage controller.
6. Remove the service bae from the chassis.
CAUTION: To prevent a thermal shutdown of the storage system, the storage controller must be installed within
three minutes of removing the service bae.
7. Install the storage controller in the chassis.
8. Reconnect the cables to the storage controller.
9. Clear the storage controller swap status from the Hardware tab in Dell Storage Manager.
For instructions, see the Dell Dell Storage Manager Administrator’s Guide.
Next steps
1. Use Dell Storage Manager to send SupportAssist information to Dell Technical Support
2. Contact Dell Technical Support to let them know that you have completed a repair.
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Rack Rails
Rack rails are used to install the storage controller into a rack.
Remove the Rack Rails
Prerequisites
1. Use SupportAssist to send diagnostic data to Dell Technical Support.
2. Shut down the storage system using the Dell Storage Manager Client.
About this task
NOTE: Replacing rack rails must be performed during a scheduled maintenance window when the Storage Center system
is unavailable to the network.
Steps
1. Make sure all the cables are labeled.
2. Disconnect all of the cables from the storage system.
3. Loosen the screws in the chassis ears that secure the chassis to the rack.
Figure 21. Loosen the Screws
4. Remove the storage system from the rack.
5. Remove the rack rails from the rack.
Install the Rack Rails
Perform the following steps to install rack rails for an SC5020 storage system.
Steps
1. Install the replacement rack rails in the rack.
2. Install the storage system in the rack.
3. Tighten the screws in the chassis ears that secure the chassis to the rack.
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Replacing SC5020 Storage System Components
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Figure 22. Tighten the Screws
4. Reconnect the cables to the storage system.
5. Start up the storage system.
Next steps
Use SupportAssist to send diagnostic data to Dell Technical Support.
Power Up the Storage Center Hardware
Perform these steps to power up the Storage Center hardware after powering o the hardware or after a power outage.
About this task
If the Storage Center hardware includes expansion enclosures, turn on the expansion enclosures rst, then turn on the storage
.
system
Steps
1. Connect the storage system and any expansion enclosures to a power source.
2. Turn on any expansion enclosures attached to the Storage Center.
NOTE: After an expansion enclosure is powered on, its ID number is displayed on the back panel. If you want the
expansion enclosures IDs to appear in sequential order, turn on each expansion enclosure one at a time, in the order
that you want the IDs to appear.
a. Press both power switches on the back of the expansion enclosure at the same time to turn on the expansion enclosure.
The status indicator on the front of the expansion enclosure turns blue when the expansion enclosure is powered up and
operational.
b. Power on any additional expansion enclosures attached to the Storage Center, waiting for each expansion enclosure to
become operational before turning on the next expansion enclosure.
3. After all the expansion enclosures are powered on, turn on the storage system by pressing both power switches on the back of
the chassis.
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SC5020 Storage System Technical Specications
This appendix contains the technical specications for the SC5020 storage system.
Technical Specications
The technical specications of the SC5020 storage systems are displayed in the following tables.
Drives
SAS hard drives
Storage Controllers
Storage controllers
Storage Connectivity
Congurations
Up to 30 2.5-in. SAS hot-swappable hard drives (12 Gb SAS)
Two hot-swappable storage controllers with one I/O card slot and one optional
mezzanine card per storage controller.
Each storage controller has an internal battery backup unit. Write cache is
mirrored between the two storage controllers. If a power failure occurs, the
battery backup unit provides power to the storage controller so that the write
cache can be saved to an SSD within the storage controller.
Supports a total of 222 drives and up to 192 drives on a single SAS chain. The
SAS chain supports up to sixteen SC400 expansion enclosures or eight SC420
expansion enclosures.
3
Redundant Array of Independent Disks (RAID)
Controller Two hot-swappable storage controllers
Management RAID management using the Dell Storage Manager
Back-Panel Ports Connectors (per Storage Controller)
Fibre Channel, iSCSI, or SAS front-end
connectors
Ethernet connectors MGMT – 1 Gbps or 10 Gbps embedded Ethernet port used for Storage Center
SAS back-end connectors 12 Gb SAS ports for connections to expansion enclosures
Serial connector (micro USB) Used for initial conguration and support-only functions
LED Indicators
Front panel
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SC5020 Storage System Technical Specications
Connection to a Fiber Channel fabric, iSCSI network, or a direct connection to
servers with SAS HBAs
management
NOTE: SAS connectors are SFF-8644 compliant.
• One dual-color LED indicator for system status
• One single-color LED indicator for power status
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LED Indicators
• Identication button with a single-color LED
Hard drive carrier
• One single-color activity LED
• One dual-color LED status indicator per drive
Storage controller
• Two single-color LEDs per Ethernet port indicating activity and link speed
• One dual-color LED per SAS connector indicating port activity and status
• One single-color LED indicating status
• One single-color LED indicating system faults
• One single-color LED for system identication
Power supply/cooling fan One dual-color LED handle indicating power supply and cooling fan status
Power Supply Units (PSU)
AC power supply (per power supply) PSU Type 1 PSU Type 2 (Japan Only)
Maximum output power 1485 W 1485 W
Maximum input power 1688 W 1707 W
Maximum input current 8.8 A 17.5 A
Maximum inrush current 55 A for 10 ms or less 55 A for 10 ms or less
Nominal input voltage operating range 200–240 VAC 100–240 VAC
Nominal input frequency 50/60 Hz 50/60 Hz
Thermal output/heat dissipation 693 BTU per hour 757 BTU per hour
Available Hard Drive Power (Per Slot)
Supported hard drive power consumption
(continuous)
Up to 1.2 A at +5 V
Up to 0.5 A at +12 V
Physical
Height 13.34 cm (5.25 in.)
Width 44.50 cm (17.5 in.)
Depth 78.27 cm (31 in.)
Approximate weight (maximum conguration) 43 kg (95 lb)
Approximate weight without drives 32.5 kg (72 lb)
Environmental
For additional information about environmental measurements for specic storage system congurations, see dell.com/
environmental_datasheets.
Temperature
Operating 10°C (50°F) to 35°C (95°F) with a maximum temperature gradation of 20°C/
hour (36°F/hour)
Operating above 35°C could result in data loss
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Environmental
Storage –40° to 65°C (–40° to 149°F) at a maximum altitude of 12,000 m (39,370 ft)
Relative humidity
Operating 10% to 80% (noncondensing) with 29°C (84.2°F) maximum dew point
Storage 5% to 95% (noncondensing) with 33°C (91°F) maximum dew point
Maximum vibration
Operating 0.21 G at 5–500 Hz for 15 min
Storage 1.04 G at 2–200 Hz for 15 min
Maximum shock
Operating 31 G +/- 5% with pulse duration of 2.6 ms +/- 10% (equivalent to 20 in./sec [51
cm/sec])
Storage 71 G +/- 5% with pulse duration of 2 ms +/- 10% (equivalent to 35 in./sec [89
cm/sec])
Altitude
Operating 3,048 m (10,000 ft)
≤35°C (95°F) Maximum Rating – Maximum temperature is reduced by
1°C/300 m (1°F/547 ft) above 950 m (3,117 ft)
Storage 12,000 m (39,370 ft)
Airborne Contaminant Level
Class G1 or lower as dened by ISA-S71.04-1985
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SC5020 Storage System Technical Specications
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