Cisco LightStream 2020 Manuel d'utilisateur télécharger pdf

Doc. No.

Cisco Systems, Inc.

LightStream 2020 Upgrade to

Dual Power Cords

78-2943-01 Rev. A0

This procedure explains how to convert a LightStream 2020 chassis using a single power cord into a

chassis that can use dual power cords. Because they enable you to connect a single chassis to two

separate power sources, dual power cords minimize the effect of power failures on your network.

This procedure, which can be performed in the ﬁeld, requires familiarity with LightStream 2020

(LS2020) hardware. It should be performed only by qualiﬁed support personnel or by customers with

appropriate hardware knowledge.

Overview

To complete the conversion, you will do the following:

• Shut down the LS2020 chassis to be upgraded.

• Replace the old power trays with new trays provided in the upgrade kit. The new power trays have

power inlets and power switches.

• Install a plate to cover your chassis’s old power inlet and power switch. (This is only to avoid

confusion—the old switch and inlet are not active, and attempting to use them after the chassis

has been converted has no effect.)

• Replace your old disk assemblies with new disk assemblies included in the kit. The old disk

assemblies contain power supplies that are incompatible with the new power trays.

• Move the hard disk drives from the old disk assemblies to the new disk assemblies. This step

minimizes the operational impact of this upgrade: because you will be using the same hard disk,

there is no need to reinstall software or move ﬁles.

The upgrade kit includes sets of plastic screws, plastic washers, and plastic insulating shields that

you might need to use when you move the hard disk drives from the old disk assemblies to the new

disk assemblies (see Figure 4). The plastic “hardware” is designed to electrically isolate the hard disk

drive from chassis ground. If your old disk assemblies contain plastic screws, washers, and shields

like those in the kit, you can use either the old components or the new ones. However, if your hard

disks are fastened to the disk assemblies with metal screws, discard the metal screws and use the

plastic screws, washers, and plastic shields instead, as directed later in this document.

There are two dual power upgrade kits:

• Kit number L2020-UPG-PWR-2R= is for systems that have two NPs and disk assemblies.

• Kit number L2020-UPG-PWR-2= is for systems that have one NP and disk assembly.

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Résumé du contenu

Page 1 - Dual Power Cords

Page 2 - # reboot -n

10 LightStream 2020 Upgrade to Dual Power CordsUpgrading Disk Assemblies

Page 3 - Power switch and power inlet

2 LightStream 2020 Upgrade to Dual Power CordsPerforming an Orderly ShutdownThe kits include• 2 power trays• 1 or 2 disk assemblies, each with 4 screw

Page 4 - Replacing the Power Trays

LightStream 2020 Upgrade to Dual Power Cords 3Performing an Orderly ShutdownStep 2 At the TCS hub prompt, issue the command connect <slot#> to

Page 5

4 LightStream 2020 Upgrade to Dual Power CordsReplacing the Power TraysReplacing the Power TraysStep 1 Go to the rear of the chassis and attach your g

Page 6

LightStream 2020 Upgrade to Dual Power Cords 5Upgrading Disk AssembliesFigure 3 Remove Disk Assembly from Front of ChassisUpgrading Disk AssembliesRe

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6 LightStream 2020 Upgrade to Dual Power CordsUpgrading Disk AssembliesStep 2 Place the disk assembly on the nonconducting mat to protect it from dama

Page 8

LightStream 2020 Upgrade to Dual Power Cords 7Upgrading Disk AssembliesFigure 4 Exploded View of Disk Assembly

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8 LightStream 2020 Upgrade to Dual Power CordsUpgrading Disk AssembliesHard disk drivePlastic insulator shieldPlastic insulator shieldDCHDpowerconnect

Page 10 - Upgrading Disk Assemblies

LightStream 2020 Upgrade to Dual Power Cords 9Upgrading Disk AssembliesStep 16 Switch the power on each power tray to on. The system should resume n