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NetApp DiskShelf14mk2 FC, Hardware And Service Manual

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68

Recommended AC power line sizes

Recommended AC power line sizes

About AC power 
feeds

Longer AC power feeds need to be properly designed to preserve voltage levels 
to the equipment. The wiring from the breaker panel to the power strip, which 
supplies power to the system and disk shelves, can often exceed 50 feet. 

Note

Total AC wire length = breaker to wall or ceiling  extension cable or 
ceiling drop.

The following table lists the recommended conductor size for 2% voltage drop 
for a particular distance in feet (taken from the Radio Engineer’s Handbook). 

The following table list the approximate equivalent wire gauge (American Wire 
Gauge (AWG) to Harmonized Cordage).

110V, single-phase

20A 
circuit 

30A 
circuit

40A 
circuit

50A 
circuit

25 feet

12 AWG

10 AWG

8 AWG

8 AWG

50 feet

8 AWG

6 AWG

6 AWG

4 AWG

75 feet

6 AWG

4 AWG

4 AWG

2 AWG

220V, single-phase

20A 
circuit 

30A 
circuit

40A 
circuit

50A 
circuit

25 feet

14 AWG

12 AWG

12 AWG

10 AWG

50 feet

12 AWG

10 AWG

8 AWG

8 AWG

75 feet

10 AWG

8 AWG

6 AWG

6 AWG

AWG

8

10

12

Harmonized, mm-mm

mm-mm = millimeter 
squared

4.0

2.5

1.5

Summary of Contents for DiskShelf14mk2 FC

Page 1: ...rvice Guide NetApp Inc 495 East Java Drive Sunnyvale CA 94089 U S A Telephone 1 408 822 6000 Fax 1 408 822 4501 Support telephone 1 888 4 NETAPP Documentation comments doccomments netapp com Information Web www netapp com Part number 210 01431_D0 April 2011 ...

Page 2: ...exCache FlexClone FlexScale FlexShare FlexSuite FlexVol FPolicy GetSuccessful gFiler Go further faster Imagine Virtually Anything Lifetime Key Management LockVault Manage ONTAP MetroCluster MultiStore NearStore NetCache NOW NetApp on the Web ONTAPI OpenKey RAID DP ReplicatorX SANscreen SecureAdmin SecureShare Select Shadow Tape Simulate ONTAP SnapCopy SnapDirector SnapDrive SnapFilter SnapLock Sna...

Page 3: ... Channel disk 28 Chapter 3 Replacing Disk Shelf Devices 31 Replacing a disk shelf 32 Removing a disk shelf from a single disk shelf configuration 34 Removing a disk shelf from a loop 36 Installing a disk shelf in a rack 38 Replacing a disk in a disk shelf 40 Replacing a power supply in a disk shelf 44 Replacing an ESH2 ESH4 module 48 Removing a module 49 Installing a module 51 Hot swapping a modul...

Page 4: ...ntents Recommended AC power line sizes 68 Calculating the length of DC wires 69 Appendix C Feature Update Record 75 Appendix D Communications Regulations 77 Regulatory notices 78 Declaration of Conformity 80 Index 81 ...

Page 5: ... the two input power terminals for the DC power supply must be connected to separate isolated branch circuits To reduce the risk of personal injury or equipment damage allow internal components time to cool before touching them and ensure that the equipment is properly supported or braced when installing options This equipment is designed for connection to a grounded outlet The grounding type plug...

Page 6: ...iert sein und die beiden Eingangsstromklemmen für das Gleichstrom Netzteil müssen an separate und isolierte Abzweigleitungen angeschlossen sein Zum Schutz vor Körperverletzung oder Sachschäden am Gerät lassen Sie die inneren Bauteile stets vor dem Berühren abkühlen Sorgen Sie dafür dass das Gerät richtig abgestützt ist oder fest aufrecht steht bevor Sie neues Zubehör einbauen Dieses Gerät ist für ...

Page 7: ...s chapter This chapter provides a roadmap for installing the DS14mk2 FC and DS14mk4 FC disk shelf Topics in this chapter This chapter discusses the following topics Differences between the various disk shelf models on page 2 Before you begin your installation on page 4 The installation process on page 9 ...

Page 8: ...d switch The 1 Gb loop speed setting must be used if the disk shelf is connected to the FAS270 The 2 Gb loop speed setting must be used if there is any component on any part of the loop that is only capable of 2 Gb operation Examples of these components are this disk shelf model SFPs or HBAs Front Drive bays are keyed to prevent the use of unsupported drives Back Power supply bays are keyed to pre...

Page 9: ... shelf models Power supplies Power supplies are keyed and can be used with all shelf models Power supplies are keyed and can be used with all shelf models ESH4 ESH4 functions at 1 Gb or 2 Gb loop speed depending on the system configuration Does not have a terminate switch ESH4 functions at 1 Gb 2 Gb or 4 Gb loop speed depending on the system configuration Does not have a terminate switch ESH2 ESH2...

Page 10: ...1 The ID of a single disk shelf must be 1 Each disk shelf is shipped with its assigned ID set on its back panel You must ensure that the disk shelf has the correct ID number on the label The ID label is on the right side of the disk shelf as shown in the following illustration NetApp sets the disk shelf IDs at the factory on configured systems using an ID switch on the back panel If you order addi...

Page 11: ...h The example in the following illustration shows a DS14mk2 FC with the disk shelf ID set to 1 Loop IDs In addition to identifying the disk shelf ID and the direction of the drive bays the ID label on the right side of the disk shelf includes the loop ID The loop ID identifies the disks in the disk shelf The last sheets of the quick reference cards that come with your disk shelf shows the seven di...

Page 12: ...6 Before you begin your installation For DS14mk2 FC ...

Page 13: ... more information on supported drives and platforms Drive bay requirements For enclosure services monitoring to work drive bays 0 and 1 must contain a disk This requirement is posted on the label on the left flange of the disk shelf The 14 drive bays in the disk shelf are numbered 0 through 13 from right to left as shown in the following illustration ...

Page 14: ...e What it does 1 System Uses a subset of SCSI 3 commands to monitor the disk shelf for data related to disk presence temperature power supply units and fan status 2 System Sends the commands through its Fibre Channel interface to drive bays 0 and 1 on the disk shelf 3 Drive bays 0 and 1 Communicate the request to the ESH2 or ESH4 module and send the data to the system ESH2 or ESH4 module Collects ...

Page 15: ...the disk shelf to the system Only in the following scenarios If the disk shelf installation is part of a new system installation Installation and Setup Instructions for your system If the disk shelf is the first in an additional loop to your existing system Hot adding a disk shelf to an existing adapter in your system on page 62 4 Connect the disk shelves Only in the following scenarios If the new...

Page 16: ...A Hot adding a Disk Shelf to an Existing System on page 55 If the system was shipped in a system cabinet you must connect the system cabinet to a power source See the System Cabinet Guide 7 Configure the system Yes if the disk shelf installation is part of a new system installation See the Data ONTAP Software Setup Guide Stage Procedure Is the procedure required For instructions go to ...

Page 17: ...f the various LEDs on the disk shelf Note The quick reference cards in the slide out tray at the base of the disk shelf describe the functions of each LED on the disk shelf and the suggested course of action Topics in this chapter This chapter discusses the following topics Monitoring the front operation panel on page 12 Monitoring the ESH2 or ESH4 modules on page 15 Monitoring the ESH2 ESH4 on pa...

Page 18: ...ed on your system console Location of LEDs The following illustration shows the location of the disk shelf ID display and the front panel LEDs Note The Fault and System LEDs are amber The other three LEDs are green See LED status on the front operation panel on page 13 for an illustrated explanation of how the LEDs function Monitoring the disk shelf ID When you use the thumbwheel switch on the bac...

Page 19: ... the front operation panel The following illustrations are of the first sheets of the quick reference cards that come with your disk shelf They shows the normal and fault conditions that the LEDs indicate and recommends a corrective action For DS14mk2 FC ...

Page 20: ...see Replacing a disk shelf on page 32 Error message Action required Temperature sensor Element 1 failed The temperature sensor on the front operation panel failed Contact technical support to replace the disk shelf Alarm Element 1 failed The alarm on the front operation panel failed Contact technical support to replace the disk shelf Display Element 1 failed The alarm on the front operation panel ...

Page 21: ...opriate loop speed LED lights up to indicate the speed of operation You can also identify any hardware failure associated with the module from the error messages displayed on your system console This section also describes the different types of messages that appear on the system console in response to a command monitoring the ESH2 or ESH4 Location of the module LEDs The modules are in the middle ...

Page 22: ... of the LEDs for an ESH4 The LED for ELP is for future functionality LED status on the modules The following illustrations are of the second sheets of the quick reference cards that come with your disk shelf The rest of the second sheet of the quick reference card identifies the LED status conditions for the power supply and the integrated fan module ELP ...

Page 23: ...Chapter 2 Monitoring the Disk Shelf 17 For DS14mk2 FC ...

Page 24: ...lement on the module fails For information about replacing the module see Replacing an ESH2 ESH4 module on page 48 Error message Action required SES electronics Element 1 component is from a different product family Module A was replaced and the shelf has the unsupported configuration of ESH2 and ESH4 This error message occurs during the process of hot upgrading ...

Page 25: ...tact technical support to replace the ESH2 ESH4 Temperature sensor Element 3 not installed or failed Communication was possible with the temperature sensor on ESH2 ESH4 module B at one point but it is not possible now Even if traffic is flowing through the Fibre Channel loop contact technical support to replace the ESH2 ESH4 SES electronics Element 1 not installed or failed Communication was possi...

Page 26: ...he ESH2 ESH4 does not have a terminate switch If the disk shelf connects to a Use the commands System with Data ONTAP 7 x or earlier installed storage show hub environ shelf System with Data ONTAP 10 x installed storage show hub environ shelf But you must do the following before you can use the above commands 1 Log into the system and enter the following command at the console to go to the shell c...

Page 27: ...4 45 0 1 2 3 4 5 6 7 8 9 10 11 12 13 OK TERM OK OK OK OK OK OK OK OK BYP TBI OK OK EMPTY OK OK 8 8 10 8 10 10 10 10 10 10 10 8 8 8 8 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 0 8 8 0 0 16 0 16 0 8 0 0 8 16 20 6 6 9 6 8 9 7 6 16 8 6 6 15 4 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Shelf state Description ONLINE She...

Page 28: ... is connected to another DS14mk2 FC in the loop TERM Terminate switch is in the On position This DS14mk2 FC is the last shelf in the loop TERM ERR Forced terminate event The terminate switch is in the On position even though this DS14mk2 FC is connected to another DS14mk2 FC in the loop The output port LED flashes to indicate this configuration error AUTO TERM Terminate switch is in the Off positi...

Page 29: ...ypassed due to excessive word errors BYP CRC Port bypassed due to excessive CRC errors BYP CLK Port bypassed due to excessive clock delta BYP MIR Port bypassed due to cluster mirror bit being set check partner BYP LIPF7 Port bypassed due to drive transmitting LIP F7s BYP GEN Port bypassed due to a generic error BYP MAN Port was manually bypassed Manufacturing test only BYP LIP Port bypassed due to...

Page 30: ...Yes if drive was bypassed Invalid Word Count Number of times this port saw invalid FC AL words transmitted Is zero under normal operation Removal and addition of disks and a reset of the adapter might generate some word errors Word errors on a port pinpoint the failure location Excessive word errors for a continuous time period causes the ESH2 ESH4 firmware to bypass this port Yes if drive was byp...

Page 31: ... bypass this port Yes if drive was bypassed Utilization Relative use of this port versus other ports in the ESH2 ESH4 This value does not reflect the real time use of what the ports are currently achieving and is only obtained when extended status is available from the ESH ESH2 It indicates the relative use from the last time extended status was available No LIP Count Number of loop initialization...

Page 32: ... associated with the power supplies from the error messages displayed on your system console Location of LEDs Each power supply which contains two LEDs is encased in a device carrier and housed at the rear of the disk shelf The following illustration shows the location of the power supply LEDs Note The PSU status LED is green The other three LEDs are amber See LED status on the modules on page 16 ...

Page 33: ...sk shelf failed Contact technical support to replace the power supply Power supply Element 2 failed The power supply unit on the right at the back of the disk shelf failed Contact technical support to replace the power supply Cooling element Element 1 failed The integrated fan module in the power supply unit on the left at the back of the disk shelf failed Contact technical support to replace the ...

Page 34: ...ng the Fibre Channel disk The Fibre Channel disk has two LEDs The LEDs indicate whether the disk is functioning normally or there are problems with the hardware Location of LEDs The following illustration shows the Fibre Channel disk which has two LED indicators on the front LED 1 LED 2 ...

Page 35: ...the LEDs pulsing every half second For DS14mk2 FC The following illustration is a correction of the third sheet of the quick reference cards that come with your disk shelf Reinsert drive Replace drive Check console messages SES device fault bit set SES device fault bit set Find a physical drive identified by software SES device identification set SES device identification set Disk port is bypassed...

Page 36: ...30 Monitoring the Fibre Channel disk For DS14mk4 FC ...

Page 37: ... how to replace disk shelves in a rack disks in a disk shelf and other devices Topics in this chapter This chapter discusses the following topics Replacing a disk shelf on page 32 Replacing a disk in a disk shelf on page 40 Replacing a power supply in a disk shelf on page 44 Replacing an ESH2 ESH4 module on page 48 ...

Page 38: ...ix A Hot adding a Disk Shelf to an Existing System on page 55 Attention Hot removal of disk shelves is not supported Shutdown of system is required to remove shelves from system Disk shelf cabling requirements The following table lists the cabling requirements for the disk shelves Cable type and connector Where used Additional requirements LC to LC To connect system optical adapters to the ESH2 or...

Page 39: ...om a rack see the following topics Removing a disk shelf from a single disk shelf configuration on page 34 Removing a disk shelf from a loop on page 36 Installing a disk shelf in a rack on page 38 SFP to SFP To connect disk shelves with ESH2 and ESH4 modules None Cable type and connector Where used Additional requirements ...

Page 40: ...with Data ONTAP 7 x or earlier installed Shut down the system by entering the following command at the console halt Attention Always use the halt command to perform a clean shutdown System with Data ONTAP 10 x installed 1 Log into the system and enter the following command at the console to go to the shell command mode ngsh 2 Enter the following command at the console to go to the command line int...

Page 41: ...t the two disk shelf power cords from the disk shelf 6 Disconnect the Fibre Channel cable connecting the disk shelf and system 7 Disconnect the grounding strap connecting the disk shelf and system 8 Use a Phillips screwdriver to remove the screws securing the disk shelf to the telco tray the mid mount bracket or the four post rack 9 With the help of another person remove the disk shelf from the ra...

Page 42: ...TAP 7 x or earlier installed Shut down the system by entering the following command at the console halt Attention Always use the halt command to perform a clean shutdown System with Data ONTAP 10 x installed 1 Log into the system and enter the following command at the console to go to the shell command mode ngsh 2 Enter the following command at the console to go to the command line interface dblad...

Page 43: ...connecting the disk shelf to the other disk shelves or the system 8 Use a Phillips screwdriver to remove the screws from the flanges of the disk shelf retention bracket 9 With the help of another person remove the disk shelf from the rack CAUTION Because the disk shelf is very heavy when fully loaded it is advised that at least two people remove the disk shelf 10 If you are Then Not installing a r...

Page 44: ...ify that you received the envelope with the disk shelf ID labels 3 Ground yourself to the system chassis using the grounding leash 4 Use the rail kit installation flyer in the rail kit box to install the appropriate rail kits on the rack 5 Install and secure the disk shelf onto the support brackets and rack 6 Change the disk shelf ID with the following procedure 1 Press the thumbwheel switch on th...

Page 45: ...ed all components on any part of the loop must be of 4 Gb capable Examples of these components are this disk shelf model SFPs HBAs or drives Attention An incorrectly set loop speed causes the system to panic 9 Use the appropriate cable to connect both modules of the disk shelf to the other disk shelves or to your system See Disk shelf cabling requirements on page 32 for additional requirements 10 ...

Page 46: ...pport warning message is then sent DISK FAIL Bypassed by ESH Preparing to replace a disk Before you replace a disk in a disk shelf you must first check the disk shelf to ensure that after you remove the disk you still have enough disks installed to meet the enclosure services requirements For information about these requirements see Drive bay requirements on page 7 About replacing a disk in a disk...

Page 47: ...lled If you are removing disk that is a member of a volume enter disk fail disk_name Or If you are removing disk that is a spare disk enter disk remove disk_name Either command causes the amber fault LED on the disk to illuminate For more information about LEDs see Monitoring the Fibre Channel disk on page 28 For more information about disk commands see the Data ONTAP System Administrator s Guide ...

Page 48: ... Either command causes the amber fault LED on the disk to illuminate For more information about LEDs see Monitoring the Fibre Channel disk on page 28 2 Put on the antistatic wrist strap and grounding leash 3 To remove the disk press down on its release mechanism with one hand while grasping the top flange of the disk shelf with the other hand 4 Gently slide the disk until it disengages Wait 30 sec...

Page 49: ...so that the release mechanism is at the top 3 Insert the device carrier into the guide slot in the disk shelf and firmly push it in until it engages the backplane and you see the release mechanism click into place Attention Do not slam the device carrier into place 4 If you are installing another disk repeat Step 1 through Step 3 5 Make sure that disks are installed in drive bays 0 and 1 for Enclo...

Page 50: ...own the disk shelf Removing a power supply To remove a power supply complete the following steps Step Action 1 Put on the antistatic wrist strap and grounding leash 2 If you have a disk shelf with Then An AC power supply 1 Turn off the switch on the power supply that you are replacing 2 Lift up the clip lock and unplug the power cord from the system power supply A DC power supply 1 Turn off and un...

Page 51: ...sm levers in the middle of the power supply to release it The following figure shows how to release the CAM mechanism At the top of the rear of the unit Using your thumb and index finger press the CAM mechanism levers toward each other to release the power supply handle The following figure shows how to press the levers on the CAM mechanism and release the power supply handle Step Action OPEN OPEN...

Page 52: ... hands to support its weight Step Action Step Action 1 Put on the antistatic wrist strap and grounding leash 2 If the power supply CAM mechanism is Then slide the power supply in the power supply bay In the middle of the rear of the unit And push the CAM mechanism levers into place At the top of the rear of the unit 1 Until you hear the power supply connect with the connector inside the disk shelf...

Page 53: ...er supply 1 Plug the power cord into the power receptacle and fasten it with the clamp 2 Plug the other end of the power cord into a grounded AC power source A DC power supply 1 Connect the positive negative and ground wires to the power supply 2 Plug the other end of each power cord into a power source 4 Turn on the power switch Step Action ...

Page 54: ...annel B Note The Input and Output ports on module A on the disk shelves are inverted from module B Connectors in a module The modules have the following connectors For detailed information This section provides information about the following topics Removing a module on page 49 Installing a module on page 51 Hot swapping a module on page 52 Hot adding a Disk Shelf to an Existing System on page 55 ...

Page 55: ...th connection It is not in a cluster It does not use synchronous mirroring Removing a module To remove a module that is connected to the Fibre Channel loop complete the following steps Step Action 1 Put on the antistatic wrist strap and grounding leash 2 If the disk shelf connects to a Then System with Data ONTAP 7 x or earlier installed Shut down the system by entering the following command at th...

Page 56: ... system by entering the following command at the console halt Attention Always use the halt command to perform a clean shutdown 3 Verify that the LCD display at the front of your system displays the following message Halted 4 Disconnect the module from the Fibre Channel cabling 5 Using the thumb and index finger of both hands press the levers on the CAM mechanism on the module to release it 6 Pull...

Page 57: ...irements to support the disk shelf and module combination See the System Configuration Guide at http now netapp com for more information 2 Put on the antistatic wrist strap and grounding leash 3 Push apart the levers on the CAM mechanism and slide the module into the slot at the rear of the disk shelf then push the levers of the CAM mechanism into place Attention Do not use excessive force when sl...

Page 58: ... and their position in the loop you might need to order additional cables appropriate to the modules See Disk shelf cabling requirements on page 32 for additional requirements Attention If you attempt to hot swap the module on a disk shelf that does not have multipath connections you lose all access to the drives on this disk shelf as well as those below it Hot swapping a module To hot swap a modu...

Page 59: ...decli 3 Enter the following command to disable the loop in which the failed module is a connection storage disable adapter adaptername 4 If you are hot swapping like modules disconnect the module that you are removing from the Fibre Channel cabling 5 Using the thumb and index finger of both hands press the levers on the CAM mechanism on the module to release it and pull it out of the disk shelf 6 ...

Page 60: ... enable adapter adaptername System with Data ONTAP 10 x installed 1 Log into the system and enter the following command at the console to go to the shell command mode ngsh 2 Enter the following command at the console to go to the command line interface dbladecli 3 Enter the following command to enable the loop in which the replacement module is a connection storage enable adapter adaptername 9 Rep...

Page 61: ...ormation For detailed information about hot adding a disk shelf see the following topics Hot adding a disk shelf to an existing loop on page 57 Error message Explanation Speed mismatch termination The modules on the disk shelf detected a speed mismatch between the preceding disk shelf and this disk shelf and is reporting them as automatic terminate errors Open loop panic One of three reasons cause...

Page 62: ...56 Hot adding a Disk Shelf to an Existing System Hot adding a disk shelf to an existing adapter in your system on page 62 ...

Page 63: ...d module combination See the System Configuration Guide at http now netapp com for more information 2 Verify that you received the envelope with the disk shelf ID labels 3 Ground yourself to the system chassis using the grounding leash 4 Use the rail kit installation flyer in the rail kit box to install the appropriate rail kits on the rack 5 Install and secure the disk shelf onto the support brac...

Page 64: ...s of these components are the DS14mk2FC SFPs HBAs or drives For the 4 Gb loop speed setting to be used all components on any part of the loop must be of 4 Gb capable Examples of these components are this disk shelf model SFPs HBAs or drives Attention An incorrectly set loop speed causes the system to panic 9 Connect the two disk shelf power cords of each disk shelf that you are adding to a power s...

Page 65: ... in the loop by entering the following command at the console fcstat device_map adaptername Attention An invalid disk shelf ID causes the system to panic 2 Press the thumbwheel switch on the rear of the disk shelf and use the button to raise the number and the button to lower the number to a valid ID from 1 through 7 3 Select the correct label from the envelope identified in Step 2 and attach it t...

Page 66: ...humbwheel switch on the rear of the disk shelf and use the button to raise the number and the button to lower the number to a valid ID from 1 through 7 5 Select the correct label from the envelope identified in Step 2 and attach it to the right flange of the new disk shelf 11 Turn on the power to the disk shelf and you must wait 30 seconds for the shelf electronics to finish initializing 12 Connec...

Page 67: ... other end of the cable to the module B Input on the new disk shelf 16 Verify that all the cables are securely fastened Attention Poorly secured cables cause the system to panic over an open loop Result In 60 seconds the system recognizes the hot added disk shelf Step Action ...

Page 68: ... a disk shelf to an existing adapter To hot add a disk shelf to an existing loop complete the following steps Note To hot add disk shelves to a High availability or Active active configuration see the High Availability Configuration Guide or the Active Active Configuration Guide Step Action 1 Verify that your system meets the minimum software requirements to support the disk shelf and module combi...

Page 69: ... components are this disk shelf model SFPs HBAs or drives Attention An incorrectly set loop speed causes the system to panic 9 If the disk shelf connects to a Then change the disk shelf ID with the following procedure System with Data ONTAP 7 x or earlier installed 1 Verify that the disk shelf ID is not being used in the loop by entering the following command at the console fcstat device_map adapt...

Page 70: ...lf ID causes the system to panic 4 Press the thumbwheel switch on the rear of the disk shelf and use the button to raise the number and the button to lower the number to a valid ID from 1 through 7 5 Select the correct label from the envelope identified in Step 2 and attach it to the right flange of the new disk shelf 10 Turn on the power to the disk shelf and you must wait 30 seconds for the shel...

Page 71: ... other end of the cable to the module B Input on the new disk shelf 15 Verify that all the cables are securely fastened Attention Poorly secured cables cause the system to panic over an open loop Result In 60 seconds the system recognizes the hot added disk shelf Step Action ...

Page 72: ...66 Hot adding a disk shelf to an existing adapter in your system ...

Page 73: ...his appendix This appendix describes how to determine the power line lengths running from the system to the power source Topics in this appendix This appendix discusses the following information Recommended AC power line sizes on page 68 Calculating the length of DC wires on page 69 ...

Page 74: ...the recommended conductor size for 2 voltage drop for a particular distance in feet taken from the Radio Engineer s Handbook The following table list the approximate equivalent wire gauge American Wire Gauge AWG to Harmonized Cordage 110V single phase 20A circuit 30A circuit 40A circuit 50A circuit 25 feet 12 AWG 10 AWG 8 AWG 8 AWG 50 feet 8 AWG 6 AWG 6 AWG 4 AWG 75 feet 6 AWG 4 AWG 4 AWG 2 AWG 22...

Page 75: ...ositive and negative wires that connect the DC power supply to the DC source Example 1 This example uses the following given values VSOURCE Voltage across the internal source resistance VOC Voltage across an open circuit of the input source VLOAD Voltage across a load RTEST connected to the input source RTEST Test resistor of known value that is 10Ω at 300W RCABLE DC resistance of the cable at a g...

Page 76: ...g the length of DC wires Given VDROP 2V Maximum voltage drop through input source and cable VMIN 40V Minimum input voltage IMAX 8 6V Maximum input current at 40V VOC 48V Measured VLOAD 47 5V Measured RTEST 10Ω 300W ...

Page 77: ...e the following calculation VLOAD I RTEST I VLOAD RTEST VOC VSOURCE VLOAD VOC IRS VLOAD RS VOC VLOAD I RS VOC VLOAD VLOAD RTEST RS VOC VLOAD VLOAD 48V 47 5V 47 5V 0 105Ω RTOTAL RCABLE RSOURCE RCABLE RTOTAL RSOURCE RCABLE 0 233Ω 0 105Ω 0 128Ω Solution VDROP IMAXRTOTAL 2 8 6 RTOTAL RTOTAL 2 8 6 RTOTAL 233Ω x RTEST x 10Ω ...

Page 78: ... 7 20 0015 0018 85 71 12 19 25 0017 0020 75 64 12 65 30 0018 0022 71 58 12 165 34 0016 0019 80 67 1 Data from Alpha Wire wire manufacturer 2 Combined positive and negative run Total cable length Total cable length 75 ft RCABLE DC resis 1 128Ω 0017Ω ft Given VDROP 2V Maximum voltage drop through input source and cable VMIN 40V Minimum input voltage IMAX 8 6V Maximum input current at 40V RSOURCE 0 ...

Page 79: ...le length2 ft 25 C 75 C 25 C 75 C 12 Solid 0017 0020 136 116 12 7 20 0015 0018 155 129 12 19 25 0017 0020 136 116 12 65 30 0018 0022 129 105 12 165 34 0016 0019 145 122 Solution VDROP IMAXRTOTAL RTOTAL VDROP IMAX RTOTAL 2 8 6 RTOTAL 0 233Ω RTOTAL RSOURCE RCABLE RCABLE RTOTAL RSOURCE RCABLE 0 233 0 RCABLE 0 233 Total cable length Total cable length 136 ft RCABLE DC resis 1 233Ω 0017Ω ft ...

Page 80: ...onger run for your combined positive and negative DC wires choose a wire with a lower resistance and calculate the total cable length For example a solid 10 AWG has a lower DC resistance than a solid 12 AWG 1 Data from Alpha Wire wire manufacturer 2 Combined positive and negative run ...

Page 81: ... 6 1 1 July 2001 Update to include hot adding of disk shelves to NetCache appliances NetCache 5 2 August 2001 Update to include FAS900 series Data ONTAP 6 3 August 2002 Update to include DS14mk2FC Update to include ESH Data ONTAP 6 4 1 Data ONTAP 6 2 May 2003 Update to specify ESH support for C6200 Address BURT on hot adding disk shelves NetCache 5 5 Data ONTAP 6 5 December 2003 Update to include ...

Page 82: ...the System Configuration Guide at http now netapp com for information May 2007 Update to include support for FlexCache appliances Data ONTAP 7 2 5 1 and later November 2008 Update to include support for V30xx V31xx and V60xx systems Data ONTAP 7 3 and later for selected platforms Update to include Data ONTAP 10 0 x commands for procedures Data ONTAP 10 0 x and later for selected platforms Update t...

Page 83: ...endix D Communications Regulations 77 D Communications Regulations About this appendix This appendix lists the regulatory notices you need to be aware of when installing and operating your NetApp equipment ...

Page 84: ...ith Part 15 of CFR 47 This equipment has been tested and found compliant with Part 15 of the CFR 47 rules for Class A digital devices These rules are designed to provide reasonable protection from interference to electronics equipment operated in a commercial environment Operation of this device is subject to the following two conditions This device cannot cause harmful interference This device mu...

Page 85: ...n a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures Voluntary Control Council for Interference by Information Technology Equipment VCCI Japan Translation of the VCCI A notice This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information Technology Equipment VCCI If thi...

Page 86: ...ng standards EN 60950 2002 Information Technology Equipment Safety EN 55022 1998 Emissions Requirements for Information Technology Equipment EN 50024 1998 Immunity Requirements for Information Technology Equipment EN 60825 1 Safety of Laser LED Equipment EN 61000 3 2 2002 Limits for Harmonic Current Emissions EN 61000 3 3 1995 A1 2001 Limitation of Voltage Fluctuations and Flicker in Low Voltage S...

Page 87: ...ies 3 shelf chassis 2 disk drive compatibility 7 disk shelf ID 4 disk shelves installing 38 removing from a single configuration 34 replacing 32 disks location of LEDs 28 reasons to replace 40 replacing 40 drive bay requirements 7 DS14 and DS14mk2 FC differences 2 E element 18 Enclosure Services drive bays required for 7 ESH ESH2 error messages SES electronics element 1 and 2 18 19 Temperature sen...

Page 88: ... BYP GEN 23 BYP INIT 23 BYP LIP 23 BYP LIPF7 23 BYP LIPF8 23 BYP MAN 23 BYP MIR 23 BYP OSC 23 BYP RLOS 23 BYP RPRT 23 BYP STALL 23 BYP TBI 22 BYP WRD 23 BYP XMIT 23 EMPTY 22 OK 22 power grounded electrical outlet 47 receptacles 47 power supplies installing in a disk shelf 46 interpreting LEDspower supply 16 location of LEDs 26 power cord with 47 power switch for 47 removing from a disk shelf 44 re...

Page 89: ...and output Clock Delta 24 Insert Count 24 Invalid CRC Count 24 Invalid Word Count 24 LIP Count 25 Loop up Count 24 Stall Count 25 Utilization 25 storage show hub output ESH ESH2 state 21 Port state 22 shelf state 21 Term switch 22 supported disks 7 T term switch messages AUTO TERM 22 OK 22 TERM 22 TERM ERR 22 ...

Page 90: ...84 Index ...

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