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4 Removing InfiniBand Cables and Switches

This chapter describes the procedure to remove a damaged InfiniBand cable or InfiniBand switch
for repair.

4.1 Removing a Damaged Cable From the c-Class Cable Management
Bracket

To remove a damaged cable, follow these steps:

1.

Bring the HP BladeSystem c-Class enclosure to an appropriate state for service as described
in the HP BladeSystem c7000 Enclosure Maintenance and Service Guide on the HP website:

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00714237/c00714237.pdf

2.

To release the InfiniBand cable from the releasable cable tie, use your finger or a small
flat-headed screw driver to push down on the small tab inside the cable tie lock (see callout
1 in

Figure 4-1

).

Figure 4-1 Cable Tie Release Tab

1

Note:

The release tab is very small and might be difficult to reach with your finger. Use a small
flat-headed screw driver to push the tab down to release the cable tie. Also, because there
are several cables, removal of an InfiniBand cable in the middle portion of the switch might
be difficult without the use of needle nose pliers and a small flat-headed screw driver. Be
very careful not to damage other InfiniBand cables while using pliers or a screw driver
.

3.

Remove the InfiniBand cable from the switch. To remove the InfiniBand cable, pull the
release tab on the QSFP connector while using your other hand to remove the connector
from the switch. For more information on how to remove an InfiniBand cable from the
switch, see the HP BLc 4X DDR InfiniBand Gen 2 Switch Installation Guide.

4.2 InfiniBand Switch Removal

Put the rack cabinet into a safe and stable state for component removal. You must ensure that
you can reach the component easily and handle it safely.

To remove the InfiniBand switch, follow these steps:

1.

Bring the HP BladeSystem c-Class enclosure to an appropriate state for service as described
in the HP BladeSystem c7000 Enclosure Maintenance and Service Guide on the HP web site:

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00714237/c00714237.pdf

2.

Remove all of the InfiniBand cables from the InfiniBand switch, but leave them secured in
the cable management bracket.

4.1 Removing a Damaged Cable From the c-Class Cable Management Bracket

17

Содержание BladeSystem c-Class Enclosure Cable Management Bracket

Страница 1: ...HP BladeSystem c Class Enclosure Cable Management Bracket Installation Guide HP Part Number 436670 doc Published September 2008 ...

Страница 2: ...products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein InfiniBand is a trademark of the InfiniBand Trade Association Printed in the U S A ...

Страница 3: ...quisites 9 2 Aligning the Bracket 11 3 Installing the Cable Management Bracket 13 3 1 Installing the Cable Management Bracket 13 3 2 Installing the Releasable Cable Ties for the InfiniBand Cables 13 4 Removing InfiniBand Cables and Switches 17 4 1 Removing a Damaged Cable From the c Class Cable Management Bracket 17 4 2 InfiniBand Switch Removal 17 Table of Contents 3 ...

Страница 4: ... A Cable Management Bracket Holding 16 InfiniBand Uplink Cables 14 3 2 A Cable Management Bracket Holding 8 InfiniBand Uplink Cables 15 3 3 InfiniBand Cable Secured with a Releasable Cable Tie 16 3 4 Gauging the Tightness of the Releasable Cable Tie Loop 16 4 1 Cable Tie Release Tab 17 4 List of Figures ...

Страница 5: ...List of Tables 1 1 Fasteners Supplied with Cabinet Mounting Hardware 8 2 1 Bracket Mount Locations 12 5 ...

Страница 6: ...6 ...

Страница 7: ...ches For example the InfiniBand cables that run from an HP BLc 4X DDR InfiniBand switch mounted in the rear of the HP BladeSystem c Class enclosure to another switch or a similar interconnect device The kit provides strain relief for the cables connected to the individual InfiniBand interconnect ports and ensures a good connection It also ensures the correct bend radius for the cable and provides ...

Страница 8: ...d with Cabinet Mounting Hardware Description Torque Format Size Qty Cage nut for M6 screw N A Square nut M6 cage nuts 2 Machine screw For use with M6 cage nut 25 30 in lb 2 Cross recess M6 x 0 625 inch pan head screws 2 To prevent screws from becoming loose because of vibration HP recommends that you use an adjustable torque drive set to the torque specifications given in the table above Contact y...

Страница 9: ...e HP Cluster Platform InfiniBand Interconnect Installation and User s Guide Ensure you know how to plug in the InfiniBand cables as described in the HP Cluster Platform InfiniBand Interconnect Installation and User s Guide Read the rack installation instructions for the c Class enclosure Obtain the set of cabling tables required for your HP Cluster Platform solution Important Do not secure the enc...

Страница 10: ...10 ...

Страница 11: ... Orientation 2 1 The following list describes the callouts shown in Figure 2 1 1 Mounting hook installed in one of the mounting holes in the rack s rear left column 2 Cable management bracket Callout 1 shows the bracket s mounting hook installed in one of the square holes in the left rear rack column The actual mounting locations for a bracket are relevant to the location of the c Class enclosure ...

Страница 12: ...tain the InfiniBand switch Note There might be more than one InfiniBand switch module in some configurations 2 Determine the rack U location that aligns with the top of the c Class enclosure 3 Using a pen or masking tape mark the mount locations defined in Table 2 1 Table 2 1 Bracket Mount Locations Fastener Cutout Bracket Hook Cut out Relative U Location Interconnect Module Bay Top cutout of the ...

Страница 13: ...d torque 4 If more than one bracket is required repeat Step 1 5 Slide the c Class enclosure back into the rack and secure it at the front of the rack as specified in the installation instructions for the enclosure 6 If necessary attach the second bracket once the first switch lowest switch in the c7000 enclosure is cabled and tie wrapped Note HP recommends that you only install the cable managemen...

Страница 14: ...6 InfiniBand Uplink Cables 2 1 3 The following list describes the callouts shown in Figure 3 1 1 Left rear rack column 2 16 secured InfiniBand cables 3 One of the 16 releasable cable ties completed assembly 14 Installing the Cable Management Bracket ...

Страница 15: ...stall the push button mounts The row of holes closest to the InfiniBand switch are used for the 16 uplink port InfiniBand switch The row of holes furthest out from the switch are used for the 8 uplink port InfiniBand switch 2 Install the push button mounts by pressing them upward into each hole in the cable management bracket for your InfiniBand switch type see callout 4 in Figure 1 1 3 Cable the ...

Страница 16: ...t there is room to allow the InfiniBand cable callout 4 in Figure 3 4 to move freely in the releasable cable tie loop callout 3 in Figure 3 4 that is secured to the cable management bracket callout 2 in Figure 3 4 with a push button mount not shown in Figure 3 4 Figure 3 4 Gauging the Tightness of the Releasable Cable Tie Loop 1 3 2 4 6 Repeat steps 4 and 5 to secure the remaining InfiniBand cable...

Страница 17: ...ion of the switch might be difficult without the use of needle nose pliers and a small flat headed screw driver Be very careful not to damage other InfiniBand cables while using pliers or a screw driver 3 Remove the InfiniBand cable from the switch To remove the InfiniBand cable pull the release tab on the QSFP connector while using your other hand to remove the connector from the switch For more ...

Страница 18: ...t and carefully set the bracket aside Caution Do not bend the InfiniBand cables more than the four inch minimum bend radius 5 Push the blade handle release button to release the blade handle 6 Open the blade handle and slide the switch all the way out of the HP BladeSystem c7000 enclosure 18 Removing InfiniBand Cables and Switches ...

Страница 19: ...19 ...

Страница 20: ... 436670 doc Printed in the US ...

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