Quantum Scalar 100 Guida Utente Scaricare il pdf (Pagina 41)

SNC 6101 User’s Guide 37

Replacing the SNC 6101

1 Remove the SNC 6101 from its protective bag.

2 Install it in the Scalar 100 according to the steps available in To install the SNC 6101

on page 16.

3 If it is not imperative for the replacement SNC 6101 to have a WWN identical to the replaced SNC 6101,

proceed to the Final Diagnostic Tests

on page 41.

If the replacement SNC 6101 must have a WWN identical to the replaced SNC 6101, proceed to

Changing the WWN

Before you make any changes to the world wide names of the SNC 6101, read the following discussion in

its entirety.

All Fibre Channel devices are identified by world wide names (WWNs). These names uniquely identify a

device on a storage area network (SAN) and are used by hosts to correctly connect to the storage

networking controller (SNC) or I/O blade. WWNs are divided into two types: port names, which identify

individual ports; and node names, which identify the entire unit. WWNs are formed of three critical

components:

• Port/Node ID—distinguishes port WWNs from node WWNs

• OUI—identifies the device type, stands for organizational unique identifier

• Device ID—identifies the specific device

For ADIC devices, the node ID is always “10:00” and the port ID is “20:x0” where x is the port number. The

OUI is “00:60:45” for the SNC 3000 and 5000 series and “00:30:8C” for the SNC 6000 series. If for any

reason you incorrectly enter a WWN, the changes can be cleared and replaced with the original WWN,

which is stored in the SNC.

Before Changing the WWN on a Replacement SNC 6101

1 Find your saved copy of the current (pre-replacement) configuration. Refer the SNC Firmware 4.4x

Users Guide for information on saving a configuration file.

2 Use the fcShowNames command and save its output to an easily accessible location in case the SNC

6101 should ever fail. The following provides an example of the output from this command:

SNC > fcShowNames

-----------------------------------------------------------------

Ctlr : PCI Addr : ISP : Node : Port

Id : Bs Dv Fn : Type : Name : Name

-----------------------------------------------------------------

1 : 00 07 00 : 2300 : 1000030.8c1705eb : 20010060.451705eb

2 : 00 08 00 : 2300 : 1000030.8c1705eb : 20020060.451705eb

-----------------------------------------------------------------

value = 66 = 0x42 = 'B'

SNC >

3 Install and cable the replacement SNC 6101. Follow the instructions provided in Cabling the SNC 6101

on page 17.

CAUTION

Only trained and authorized service personnel should use these

procedures. Data corruption or loss may result from the incorrect use

of these procedures. Do not change the WWN of any device on the

SAN before you talk to your service representative.

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Quantum Scalar 100 Guida Utente Pagina 41

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