Riverbed SteelHead 80 Series Upgrade And Maintenance Manual

Riverbed SteelHead 80 Series Upgrade And Maintenance Manual

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Upgrade and Maintenance Guide
SteelHead
CX (x80 and xx80)
SteelHead Interceptor (9600, 9800)
SteelCentral AppResponse (2180, 4180, 8180)
SteelCentral Flow Gateway (2280)
SteelCentral
NetProfiler (4280, 4280-DP, 4280-EXP)
Document revision: September 16, 2021

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Summary of Contents for Riverbed SteelHead 80 Series

  • Page 1 Upgrade and Maintenance Guide SteelHead CX (x80 and xx80) ™ SteelHead Interceptor (9600, 9800) SteelCentral AppResponse (2180, 4180, 8180) SteelCentral Flow Gateway (2280) SteelCentral NetProfiler (4280, 4280-DP, 4280-EXP) ™ Document revision: September 16, 2021...
  • Page 2 © 2021 Riverbed Technology, Inc. All rights reserved. Riverbed and any Riverbed product or service name or logo used herein are trademarks of Riverbed. All other trademarks used herein belong to their respective owners. The trademarks and logos displayed herein cannot be used without the prior written consent of Riverbed or their respective owners.
  • Page 3: Table Of Contents

    Welcome..................................7 Document conventions ..........................7 Electrostatic discharge guidelines ......................7 Safety guidelines.............................8 Documentation and release notes ......................8 Contacting Riverbed ............................8 1 - Replacing 1U xx80 Components........................9 Required tools ..............................9 Appliances included in this chapter......................9 Removing the chassis cover ........................10 Removing the chassis cover on 1U CX 3080 appliances .............10...
  • Page 4 Removing the chassis cover ........................31 Removing the riser brackets and air duct in 2U appliances ..............31 Replacing the disk drives ..........................33 Before you begin...........................33 Replacing HDDs in 2U appliances .....................34 Replacing the rear SSDs in 2U appliances ..................35 Replacing power supply units in 2U appliances ..................37 Replacing memory modules in 2U appliances ..................38 Replacing fans ...............................
  • Page 5 Port locations, LEDs, and buttons ....................66 Back panel, ports, and status lights ....................67 Interceptor 9600 specifications....................... 68 Port locations, LEDs, and buttons ....................69 Back panel, ports, and status lights ....................71 B - Reference: Managing Appliances with BMC ..................... 73 Logging in to the BMC ..........................74 Viewing sensor information ........................74 Viewing the field replaceable units......................
  • Page 6 6 | Contents...
  • Page 7: Welcome

    Welcome Welcome to the Upgrade and Maintenance Guide. This guide describes how to replace and upgrade Riverbed appliance components. Document conventions This guide uses this standard set of typographical conventions: Convention Meaning italics Within text, new terms and emphasized words appear in italic typeface.
  • Page 8: Safety Guidelines

    Safety and Compliance Guide. Before you install, operate, or service the Riverbed products, you must be familiar with the safety information. Refer to the Safety and Compliance Guide if you don’t clearly understand the safety information provided in the product documentation.
  • Page 9: Replacing 1U Xx80 Components

    You need the following tools and equipment to replace appliance components: • You must use approved components for the appliance to function properly. Installation of unapproved components will result in boot failure. To order components, contact Riverbed Support at https://support.riverbed.com. •...
  • Page 10: Removing The Chassis Cover

    Removing the chassis cover Removing the chassis cover This section describes how to remove the chassis cover on the 1U CX 3080 and SteelCentral xx80 appliances. The appliance must be operated with the appliance cover in place to ensure proper cooling. It includes these sections: •...
  • Page 11: Removing The Chassis Cover On 1U Steelcentral Xx80 Appliances

    Removing the chassis cover 3. Lift the cover straight up to remove the chassis cover from the appliance. For details, see Figure 1-2. Figure 1-2. Removing the cover Removing the chassis cover on 1U SteelCentral xx80 appliances This section describes how to remove and install the chassis cover on the 1U SteelCentral xx80 appliances.
  • Page 12: Replacing Disk Drives

    • When replacing a drive, replace only one drive at a time. You must use approved disk drives. To order disk drives, contact Riverbed Support at https://support.riverbed.com. • If you need to replace an appliance, you can’t move the disks to preserve your data. Each disk is encoded with machine-level information and moving disks isn’t supported.
  • Page 13: Replacing The Hdds In 1U Cx 3080 Appliances

    Replacing disk drives • Use caution when you remove or replace components; they can become hot to the touch. Replacing the HDDs in 1U CX 3080 appliances The 1U CX 3080 appliance is equipped with replaceable, hot-swappable disk drives. Two hard disk drives are located on the back of the appliance.
  • Page 14: Replacing The Hdds In 1U Steelcentral Xx80 Appliances

    Replacing disk drives 8. Push in to secure the locking lever until it clicks into place. The disk drive LED lights green when connected. Figure 1-6. Securing the locking lever 9. To lock the drive, turn the screwhead on the drive 90 degrees to the right. Important: For SteelHead appliances, the new disk drive runs through a self-test automatically.
  • Page 15: Replacing The Ssds In 1U Cx 3080 Appliances

    Replacing disk drives For SteelHead appliances, the new disk drive runs through a self-test automatically. The disk drive automatically begins proper operation with the other disk drives. You don’t need to set up or configure the new disk drive. For SteelCentral appliances, see the user guide for the product if additional steps are necessary to run a self-test.
  • Page 16: Replacing Power Supply Units

    Replacing power supply units 4. Insert the new SSD into the pin connector. Figure 1-9. Inserting the drive into the pin connector 5. Press the SSD down and insert the locking screw. 6. Replace the chassis cover. For details, see “Removing the chassis cover”...
  • Page 17 Replacing power supply units 3. Press in on the orange lever (see Figure 1-10, letter B), and pull the power supply unit toward you (see Figure 1-10, letter C). Figure 1-10. Removing the power supply unit from the 1U CX 3080 appliance 4.
  • Page 18: Replacing Power Supply Units In 1U Steelcentral Xx80 Appliances

    Replacing memory modules Replacing power supply units in 1U SteelCentral xx80 appliances This section describes how to replace a power supply (PS) in 1U SteelCentral xx80 appliances. These appliances are equipped with replaceable, hot-swappable PS units. Facing the rear of the appliance on the 1U appliance, PS1 is on the right and power supply PS0 is on the left.
  • Page 19 Replacing memory modules The 1U CX 3080 appliance is equipped with two DIMM slots: slot 0 and slot 1. When replacing memory on the 1U CX 3080 appliance, place the new memory module in the slot from which the faulty memory module was removed.
  • Page 20 3. Press the locking clips outward to unlock them and gently pull the memory module out of the slot. Figure 1-14. Releasing the locking clips Note: Replacing the existing memory module with a module of a different size causes the appliance to fail. You must use approved memory modules. Contact Riverbed Support at https://support.riverbed.com to obtain the correct memory modules.
  • Page 21 Replacing memory modules 4. Align the memory-module edge connector and insert it into the slot. When inserted properly, the memory slot locking levers lock automatically onto the indentations at the ends of the module. Figure 1-15. Inserting the memory modules 5.
  • Page 22: Replacing Fans

    To determine fan status on 1U CX 3080 appliance 1. Connect to the CLI. For details, see the Riverbed Command-Line Interface Reference Manual. 2. At the system prompt, enter the show stats fan command. The output and number of fans vary depending on your appliance.
  • Page 23 “Removing the chassis cover” on page Note: If the Intelligent Platform Management Interface (IPMI) alarm triggers when you open the chassis cover, enter the clear hardware error-log command in the CLI to clear the alarm. For details, see the Riverbed Command-Line Interface Reference Manual.
  • Page 24: Replacing Fans In 1U Steelcentral Xx80 Appliances

    Figure 1-19. 1U SteelCentral xx80 fan layout You must use approved fans. To order fans, contact Riverbed Support at https://support.riverbed.com. Important: The fans aren’t hot swappable; you must power down the appliance before replacing the fans.
  • Page 25 Replacing fans 4. Unplug the fan cable located on the HDD backplane. Figure 1-20. Unplugging the fan cable Replacing 1U xx80 Components | 25...
  • Page 26 Replacing fans 5. To remove the fan, pull straight up on each side of the fan. The fan is removed, including the attached flat metal fan bracket. Figure 1-21. Removing the fan 26 | Replacing 1U xx80 Components...
  • Page 27 Replacing fans 6. Insert the new fan with the attached bracket into the fan slot. Figure 1-22. Inserting the new fan 7. Plug the fan cable into the HDD backplane. 8. Replace the chassis cover. Replacing 1U xx80 Components | 27...
  • Page 28 Replacing fans 28 | Replacing 1U xx80 Components...
  • Page 29: Replacing 2U Xx80 And 9800 Components

    You need the following tools and equipment to replace appliance components: • You must use approved components for the appliance to function properly. Installation of unapproved components will result in boot failure. To order components, contact Riverbed Support at https://support.riverbed.com. •...
  • Page 30: Removing The Bezel

    Removing the bezel • Use the Riverbed magnetic reversible screwdriver (that is, Phillips and flathead) enclosed with your shipment to remove screws in the appliance. The magnetic screwdriver ensures screws aren’t lost in the appliance. Removing the bezel This procedure describes how to remove and install the front bezel on 2U appliances.
  • Page 31: Removing The Chassis Cover

    Removing the chassis cover Removing the chassis cover This section describes how to remove the chassis cover on 2U xx80 and IC 9800 appliances. Important: The appliance must be operated with the appliance cover in place to ensure proper cooling. To remove the chassis cover on the 2U appliance 1.
  • Page 32 Removing the riser brackets and air duct in 2U appliances 2. Remove the two screws on the top of the riser brackets and loosen the two screws on the back of the appliance. Figure 2-3. Removing the screws from the riser brackets 3.
  • Page 33: Replacing The Disk Drives

    • When replacing a drive, replace only one drive at a time. You must use approved disk drives. To order disk drives, contact Riverbed Support at https://support.riverbed.com. • If you need to replace an appliance, you can’t move the disks to preserve your data. Each disk is encoded with machine-level information and moving disks isn’t supported.
  • Page 34: Replacing Hdds In 2U Appliances

    When replacing a drive, replace only one drive at a time. You must use approved disk drives. To order disk drives, contact Riverbed Support at https://support.riverbed.com. Note: When you replace disk drives, you must wear a grounded ESD antistatic strap to protect the hardware against electrostatic discharge.
  • Page 35: Replacing The Rear Ssds In 2U Appliances

    Replacing the disk drives 3. Press the orange locking-lever latch and pull the locking lever open. Figure 2-6. Removing the disk drive 4. Slide the faulty disk drive tray out. 5. Slide in the new disk drive until it engages with the back connectors in the chassis. 6.
  • Page 36 Replacing the disk drives 2. Press the orange locking-lever latch and pull the locking lever open. Figure 2-7. Removing the 2.5 inch SSD on the rear of the 2U appliance 3. Insert the SSD drive into the chassis. 4. Press the locking lever to secure the drive. Figure 2-8.
  • Page 37: Replacing Power Supply Units In 2U Appliances

    Replacing power supply units in 2U appliances Replacing power supply units in 2U appliances This section describes how to replace a power supply (PS) in 2U xx80 and IC 9800 appliances. These appliances are equipped with replaceable, hot-swappable PS units. The PS units are numbered, when facing the rear of the appliance on the appliance, PS0 is on the right and PS1 is on the left.
  • Page 38: Replacing Memory Modules In 2U Appliances

    Replacing memory modules in 2U appliances Caution: Put the defective power supply unit aside; wait until it cools down before touching it. 4. Press and hold the latch and push the power supply into the chassis using the handle. Figure 2-11. Inserting the power supply unit for 2U CX xx80 appliances 5.
  • Page 39 5. Press the clips outward to unlock them and gently pull the memory module out of the slot. Figure 2-13. Releasing the locking clips Note: Replacing the existing memory module with a module of a different size causes the appliance to fail. You must use approved memory modules. Contact Riverbed Support at https://support.riverbed.com to obtain the correct memory modules.
  • Page 40 Replacing memory modules in 2U appliances 6. Align the memory-module edge connector and insert it into the slot. When inserted properly, the memory slot locking levers lock automatically onto the indentations at the ends of the module. Figure 2-14. Inserting the memory modules 7.
  • Page 41: Replacing Fans

    To determine fan status on the appliance 1. Connect to the CLI. For details, see the Riverbed Command-Line Interface Reference Manual. 2. At the system prompt, enter the show stats fan command. The output and number of fans vary depending on your appliance. On appliances where each fan has two rotors, each rotor has a unique status entry.
  • Page 42: Replacing Fans In 2U Cx Xx80 And Ic 9800 Appliances

    Figure 2-16. Fan layout You must use approved fans. To order fans, contact Riverbed Support at https://support.riverbed.com. To replace the fan in the 2U appliance 1. Power down the appliance.
  • Page 43 Replacing fans 4. Disconnect the fan power cable from the backplane. Figure 2-17. Disconnecting the fan power cable 5. Press the blue button and pull the fan straight up to remove it. Figure 2-18. Removing the faulty fan Replacing 2U xx80 and 9800 Components | 43...
  • Page 44 Note: If the IPMI alarm triggers when you open the chassis cover, enter the clear hardware error-log command in the CLI to clear the alarm. For details, see the Riverbed Command-Line Interface Reference Manual. 44 | Replacing 2U xx80 and 9800 Components...
  • Page 45: Replacing 9600 Components

    You need the following tools and equipment to replace appliance components: • You must use approved components for the appliance to function properly. Installation of unapproved components will result in boot failure. To order components, contact Riverbed Support at https://support.riverbed.com. •...
  • Page 46: Replacing Disk Drives

    Replacing disk drives To remove the air duct in the 2U appliance 1. Unplug the cables on the SSD drive cables. Figure 3-1. Unplugging the SSD drive cables 2. Carefully push in the two latches on the air duct (see Figure 3-2, letter A).
  • Page 47 When replacing a drive, replace only one drive at a time. You must use approved disk drives. To order disk drives, contact Riverbed Support at https://support.riverbed.com. Note: When you replace disk drives, you must wear a grounded ESD antistatic strap to protect the hardware against electrostatic discharge.
  • Page 48 Replacing disk drives 4. Slide the faulty disk drive out of the slot (Figure 3-5, letter B). Figure 3-5. Remove the disk drive 5. Remove the four screws securing the drive from the carrier and remove the failed drive (Figure 3-6, letter C).
  • Page 49: Replacing Power Supply Units

    Replacing power supply units Make sure the drive connector matches the backplane connector. Figure 3-7. Inserting the drive in the carrier 7. Open the new disk-drive handle by pressing the release button. 8. Slide in the new disk drive until it engages with the back connectors in the chassis (see Figure 3-8, letter E).
  • Page 50 Replacing power supply units Caution: Use caution when replacing the power supply units; they can become hot to the touch. To replace the power supply unit in the 2U appliance 1. Locate the defective power supply unit and remove the power cord. 2.
  • Page 51: Replacing An Ac Power Supply With A Dc Power Supply

    Replacing memory modules Replacing an AC power supply with a DC power supply By default, the 2U appliance ships with AC power supplies. You can order DC power supplies as a replacement part for the AC power supplies in 2U appliances. To install the DC power supply 1.
  • Page 52: Replacing Fans

    5. Replace the memory module with an approved memory module of the same size. Note: Replacing the existing memory module with a module of a different size causes the appliance to fail. You must use approved memory modules. Contact Riverbed Support at https://support.riverbed.com to obtain the correct memory modules.
  • Page 53: Replacing Fans In 2U Appliances

    Replacing fans To determine fan status on a 2U appliance 1. Connect to the CLI. For details, see the Riverbed Command-Line Interface Reference Manual. 2. At the system prompt, enter the show stats fan command: amnesiac> show stats fan FanId...
  • Page 54 6. Replace the chassis cover. Note: If the IPMI alarm triggers when you open the chassis cover, enter the clear hardware error-log command in the CLI to clear the alarm. For details, see the Riverbed Command-Line Interface Reference Manual. 54 | Replacing 9600 Components...
  • Page 55: A - Reference: Appliance Specifications

    Reference: Appliance Specifications This appendix includes the technical and environmental specifications, power requirements, port locations, status lights, and button descriptions for the following appliances: • “CX 580 and CX 780 specifications” on page 55 • “CX 3080 specifications” on page 58 •...
  • Page 56 CX 580 and CX 780 specifications This table summarizes the front LEDs, ports, and buttons. Front LEDs and buttons Status Power Button LED On = Blue (system is turned on) Sleep State = Yellow (system is in S5 sleep state) Off = No light (power is off) System LEDs The combination of LED 1 and LED 2 defines the system state:...
  • Page 57: Technical Specifications

    CX 580 and CX 780 specifications This table summarizes the status lights and ID button on the back of the appliance. LED/button Description Power Supply LEDs Power on and healthy = Green Standby = 1 Hz blinks green Power Off = Off Power lost but second power supply has power = Amber Power on with warning = 1 Hz blinks amber (indicates high temperature, high power, high current, or slow fan)
  • Page 58: Environmental Specifications

    CX 3080 specifications System CX 780 PSU type 2 x 550 W AC input 120 V 240 V 99 W/VA 95.2 W/VA Power factor 75.85 VA 63.76 VA Max. volt-ampere 60.08 W 48.56 W Typical watts 204.87 BTU 165.58 BTU BTU (typical) System CX 580...
  • Page 59: Port Locations, Leds, And Buttons

    CX 3080 specifications Port locations, LEDs, and buttons This figure illustrates the front of the appliance, including LEDs and buttons. Figure A-3. CX 3080 front panel This table summarizes the LEDs and buttons on the front of the appliance. LED or button Description Power On/Off Button and On = Blue (System is turned on.)
  • Page 60: Back Panel, Ports, And Status Lights

    CX 3080 specifications LED or button Description Ports 3-6 LAN/WAN ports Left LED Link = Green Activity = Blinks green Bypass/Disconnect = Yellow Right LED 10 Mbps data rate = No light (with link on left LED) 100 Mbps data rate = Green 1000 Mbps/1 Gbps = Yellow Ports 7-8 (on-board) Not used.
  • Page 61: Power Requirements And Consumption

    CX 3080 specifications Specification CX 3080 1x 32 GB (for boot) 400 GB Data store 15.25 x 17.24 x1.73 in (387.35 x 483 x 44 mm) Dimensions (LxWxH) 27 lb (12.25 kg) Weight (without packaging) 70 W Power (Typical) 100–240 V Voltage 2 x hot-swappable/redundant, 550 W W = 100- 240 VAC/ 7.1/3.4 A, 47-63 Hz...
  • Page 62: Cx 5080 And Cx 7080 Specifications

    CX 5080 and CX 7080 specifications Specification CX 3080 Temperature (storage) -40° to 149°F (-40° to 65°C) Relative humidity 20% to 80%, noncondensing (Operating) 10% to 95%, noncondensing (Storage) CX 5080 and CX 7080 specifications This section describes the ports, LEDs, and technical and environmental specifications for the 2U SteelHead CX 5080 and CX 7080 appliances.
  • Page 63: Back Panel, Ports, And Status Lights

    Press the system ID button when the system AC (alternating current) is on. The system ID LED indicates the system is identified with a blue light. Users from a remote site can activate the ID LED by inputting commands in IPMI. For details, contact Riverbed Support. 6, 7 USB Ports v2.0...
  • Page 64: Technical Specifications

    ID LED indicates the system is identified with a blue light. Users from a remote site can activate the ID LED by inputting commands in IPMI. For details, contact Riverbed Support at https://support.riverbed.com. Primary and AUX Port LEDs Left LED...
  • Page 65: Power Requirements And Consumption

    CX 5080 and CX 7080 specifications Specification CX 5080 CX 7080 6 x 240 GB B010 = 6 x 480 GB B020 = 8 x 480 GB B030 = 8 x 960 GB 1.4 TB B010 = 2.8 TB Data store B020 = 3.8 TB B030 = 7.6 TB 27.56 x 17.32 x 3.43 in.
  • Page 66: Environmental Specifications

    Interceptor 9800 specifications Environmental specifications This table summarizes the environmental requirements for the systems. Specification CX 5080 CX 7080 Operating acoustic 56 dB (typical) 56 dB (typical) Temperature (operating) 32° to 104°F (0° to 40°C) 32° to 104°F (0° to 40°C) Temperature (storage) -40°...
  • Page 67: Back Panel, Ports, And Status Lights

    Current) is on. The system ID LED indicates the system is identified with a blue light. Users from a remote site can activate the ID LED by inputting commands in IPMI. For details, contact Riverbed Support at https://support.riverbed.com. 6, 7 USB Ports v2.0...
  • Page 68: Interceptor 9600 Specifications

    ID LED indicates the system is identified with a blue light. Users from a remote site can activate the ID LED by inputting commands in IPMI. For details, contact Riverbed Support at https://support.riverbed.com. Primary and AUX Port LEDs Left LED...
  • Page 69: Port Locations, Leds, And Buttons

    Interceptor 9600 specifications Port locations, LEDs, and buttons This figure illustrates the front of the appliance, including LEDs and buttons. Figure A-9. IC 9600 front panel This table summarizes the appliance LEDs and buttons on the Interceptor 9600 appliance. Reference LED/button Description Maintenance = Blue...
  • Page 70 Interceptor 9600 specifications Reference LED/button Description Pressing this button reboots the appliance. System Cold Reset Button The System Status LED shows the current health of the server system. System Status LED Healthy = Green Degraded = Yellow Critical = Blinks yellow System on = Green Power Button with System off = No light...
  • Page 71: Back Panel, Ports, And Status Lights

    Interceptor 9600 specifications Back panel, ports, and status lights This figure illustrates the back of the appliance, including the ports. Figure A-10. IC 9600 back panel Note: By default, the SteelHead Interceptor 9600 ships with a bypass card in slot 1. The default interface names are LAN1_0, WAN1_0, LAN1_1, and WAN1_1.
  • Page 72 Interceptor 9600 specifications 72 | Reference: Appliance Specifications...
  • Page 73: B - Reference: Managing Appliances With Bmc

    Reference: Managing Appliances with BMC The SteelHead CX xx80 and Interceptor (IC) 9800 appliances include Baseboard Management Controller (BMC) support. The BMC monitors the physical state of the appliance, it tracks system and network watchdogs, error logs, and sensors. The sensors of a BMC measure internal physical variables such as temperature, power settings, voltage levels, and fan speeds.
  • Page 74: Logging In To The Bmc

    Logging in to the BMC Logging in to the BMC The BMC provides a web interface for monitoring and management. You can access this interface through HTTPS. Note: This appendix describes some of the key features of the BMC. For complete details about each page, log in to the BMC and click the Help icon in the upper-right corner.
  • Page 75 Viewing sensor information The Sensor Reading page refreshes automatically with live data retrieved from the database. There might be some delay in retrieving the live data. Figure B-2. Sensor Reading page Reference: Managing Appliances with BMC | 75...
  • Page 76 Viewing sensor information To view sensor details and events and changing threshold settings 1. Select the sensor name to display the Sensor detail page. This page displays information, events, and thresholds. The graph is a live representation of the sensor readings. Figure B-3.
  • Page 77: Viewing The Field Replaceable Units

    Viewing the field replaceable units 4. To change sensor thresholds (if supported on the sensor), click Change Thresholds to display the Thresholds Sensor page. Note: The Change Thresholds button is enabled only for administrator or operator privilege users. For other users, this option is disabled.
  • Page 78: Viewing Logs And Reports

    Viewing logs and reports • Product Information - Displays format version, language, manufacturer, name, version, serial number, asset tag, file ID, and add-ons. Figure B-5. FRU Information page Viewing logs and reports Choose Logs & Reports > <report name> to view IPMI logs, event logs, and system logs: 78 | Reference: Managing Appliances with BMC...
  • Page 79 Viewing logs and reports • IPMI Event Log page - Displays a list of events from the sensor event logs for the appliance. You can filter by date, event type, and sensor component. You can clear and download event logs. Mouse over the graph to view the number of events by date.
  • Page 80: Viewing And Modifying Settings

    Viewing and modifying settings • Audit logs - Displays audit events for this device (if configured). To configure audit logs, choose Settings > Log Settings > Advanced Log Settings. Figure B-8. Audit Logs page Viewing and modifying settings You can view and modify these settings on the Settings page: •...
  • Page 81: Enabling Image Redirection

    Enabling image redirection • Choose Remote Control, and click Activate to launch a remote session for the appliance. Figure B-9. Remote Control page Enabling image redirection Choose Image Redirection to emulate CD/DVD/HDD images in the network to host as media through BMC.
  • Page 82: Maintenance

    Maintenance • Power Off - Immediately power off the appliance. • Power On - Powers off and then reboots the system (cold boot). • Power Cycle - Reboots the appliance without powering off (warm boot). • Hard Reset - Initiates operating system shutdown prior to the shutdown. •...

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