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Removal and Replacement Procedures: Dell™ PowerVault™ 136T SNC User's Guide

Handling Electrostatic Discharge-Sensitive Parts

Removing and Replacing the GBIC

Preparing for Removing and Replacing the SNC

Removing and Replacing the SNC

Problem Report Form

Final Diagnostic Tests

Updating the SNC

Post-Repair Checklist

This section describes the removal and replacement procedures for the SNC and the GBIC.

Handling Electrostatic Discharge-Sensitive Parts

NOTICE: It is highly recommended that you follow industry best practice when handling electrostatic discharge (ESD)-sensitive parts.

1. Keep the ESD-sensitive part in a static-protective bag until you are ready to install the part into the machine.
2. Make the fewest possible movements with your body to prevent an increase of static electricity from clothing, fibers, carpets, and furniture.
3. If instructed to do so, switch off the machine power before you remove ESD-sensitive parts.
4. Just before touching the ESD-sensitive part, discharge to the machine any static electricity in your body by touching the metal frame or cover of the machine. If possible, keep one hand on the frame when you install or remove an ESD-sensitive part.
5. You may opt to wear an ESD wrist strap.
6. Do not place any ESD-sensitive parts on the machine cover or on a metal table because large metal objects can become discharge paths if they are not grounded. If you must set aside an ESD-sensitive part, first place it into the ESD static-protective bag.
7. Prevent ESD-sensitive parts from being accidentally touched by other personnel.
8. If possible, keep all ESD-sensitive parts in a grounded metal case.
9. Be very careful when you work with ESD-sensitive parts in cold weather. Low humidity and heating increase static electricity.

Removing and Replacing the GBIC

Follow the procedure below to remove and replace the GBIC.

Removing the GBIC

1. Shutdown the host systems to ensure that all I/O through the SNC has stopped.
2. Review Handling Electrostatic Discharge-Sensitive Parts.
3. Unplug the FC cable.
4. Slide the GBIC out of the slot.
5. Place the GBIC in a static-protective bag.

Replacing the GBIC

1. Shutdown the host systems to ensure that all I/O through the SNC has stopped.
2. Review Handling Electrostatic Discharge-Sensitive Parts.
3. Remove the dust caps from a known good GBIC.
4. Insert the known good GBIC into the slot.
5. Plug the FC cables back in, being sure to use the correct polarity.
6. If you were sent here by another MAP, return to it.

Preparing for Removing and Replacing the SNC

These steps are performed if a repair action is required for any component of the SNC, except for a GBIC. See Removing and Replacing the GBIC.

1. Shutdown the host systems to ensure that all I/O through the SNC has stopped.
2. Verify that the latest SAN configuration has been saved.
3. Perform a graceful shutdown of the library and disconnect the power cord.
4. For each cable attached to the SNC, do the following:
   
• Remove the cable.
• Mark what the cable was connected to (for example, SNC number 3, SCSI channel 1).
  
5. When the final cable has been removed, return to the MAP that sent you here.

Removing SNC

This procedure describes how to remove and replace the SNC from the library.

NOTICE: Follow all ESD-sensitive parts procedures while performing this procedure. For ESD information, see Handling Electrostatic Discharge-Sensitive Parts.

1. Complete all steps in Preparing for Removal and Replacement of the SNC.
2. Loosen the two thumbscrews on the back of the library. (See Figure 1).
3. Slide unit out of the library.

Figure 1. SNC Seated in the Dell PowerVault 136T Library

Replacing the SNC

1. Remove the SNC from the protective bag.
2. Power off the library.
3. Insert the SNC into the empty bay of the library.
4. Align the power connection and seat unit firmly.
5. Tighten the four thumbscrews. (See Figure 1.)
6. Complete the Final Diagnostic Tests below.

Problem Report Form

This Problem Report Form is a model form that may be used when reporting problems to your service representative at Dell. See Getting Help section for contact information.

Final Diagnostic Tests

After a FRU has been replaced, a basic diagnostic check must be performed to verify the new FRU and to ensure that no new problems have been introduced. For further information about the procedures and commands used in this section, see:

• Connecting to the Service Port
• Diagnostic Command Reference

Final Test Preparation

1. Attach the service terminal to the SNC.
2. Reattach the power cord to the library.
3. Turn on the library and wait until the SNC has finished booting.
4. From the service terminal, enter the diagBoot command.
5. Wait until the SNC has finished booting into diagnostic mode.
6. From the service terminal, enter the showBox command.
7. Verify that the SNC accurately displays the channel information.
8. If the showBox display is accurate, go to step 9. If not, go to Start MAP.
9. Proceed to the Ethernet test below.

Ethernet Test

1. If you did not replace the SNC, go to step 3.
2. Obtain the SNC's Ethernet network parameters. Configure the Ethernet port host name, address, routes, enable Ethernet.
   
• See SNC Network Setup.
  
3. Proceed to Updating the SNC.

SNC Network Setup

The SNC must be connected to a 10/100-base-T Ethernet network for use with the Dell PowerVault SNC Manager software. An RJ-45 connector is located on the rear panel of the SNC for connection to the Ethernet. See Figure 2.

Figure 2. Ethernet Port

You will need to first configure the IP address by connecting a terminal or terminal emulator to the service port of the SNC.

To configure the network, connect to the SNC service port. See Connecting to the Service Port.

For all of the following examples, substitute the values you determined in Step 5 of Pre-Installation Steps.

1. Set the host name.
   
• The host name is set using the hostNameSet command.
• In the example shown, the host name of the SNC was "SNC" and is now being set to "foster."
• The shell prompt will change to reflect the new name.

  SNC > hostNameSet "foster"
  Target hostname set to foster
  value = 0 = 0x0
  foster >

2. Set the host network address:
   
• The network address is set using the ethAddrSet command.
• The IP address is specified as four decimal numbers, separated by periods.

  foster > ethAddrSet "192.168.1.54"
  Host Address set to 192.168.1.54 for Ethernet interface
  value = 0 = 0x0

• If you need to set a netmask, specify it after the network address:

  foster > ethAddrSet "10.0.0.2", "255.0.0.0"

3. Set the network routes and/or default gateway:
   
• If a network gateway is needed for the SNC to communicate with other systems, you must specify one.

  Foster> gateAddrSet "192.168.1.1"
  value = 0 = 0x0

• When more complicated routing is required to reach the Dell PowerVault SNC Manager server, use the route command to specify the destination address as a full address (single host) or as an abbreviated subnet address.
• Specify the address of the gateway that is reachable on the local subnet.

Foster> route "add", "206.0.0", "192.168.1.1"
value = 0 = 0x0

4. Add user account for Telnet (optional)
   
• If you want to access the SNC's command line interface through its Ethernet port using a Telnet session, you need to add a user account.
• In the example below, specify the desired user name and user password.
• The password you specify must be eight or more characters. For further information, see the user commands in Service Port Command Reference.

  Foster> userAdd "username","password"
  value = 0 = 0x0
  foster >

Updating the SNC

1. From the service terminal, enter the normalBoot command.
2. Wait until the SNC has finished booting.
3. From the service terminal, enter the version command. Write down the firmware version number.
4. To determine whether the SNC's firmware version requires an update, see the website and technical support contact information at support.dell.com.
   
• If an update is required, download the new file or files and the associated readme.
• This firmware is used when performing the steps in Post-Repair Checklist below.
  
5. If you replaced the SNC, enter the ridTag command and type the identifier. See Service Port Command Reference.

NOTICE: You must perform this step if you replaced the SNC.

6. Perform a graceful shutdown of the library and unplug the power cord.
7. Disconnect the RS-232 cable from the SNC.
8. Perform the Post-Repair Checklist below.

Post-Repair Checklist

It is important that the items in this checklist are verified after you have completed a repair action. This ensures a successful reinstall of the product.

Table 1. Post-Repair Checklist

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