E24254-01
Appendix C Tape Drives 157
Tape Drives
■
Dynamic World Wide Name
Each connection (port) in a Fibre Channel environment must have a unique ID
called the World Wide Name (WWN). The WWN is a 64-bit address that
identifies each individual device, company, with vendor information.
When a device logs-in to a Fibre Channel network, the WWN is validated for
access by comparing Port Name, Node Name, and Port ID. All three of these
identifiers must match or this indicates the configuration has changed and the
port is blocked from access.
StorageTek uses the IEEE registered format for Name Address Authority
(NAA), company ID, and vendor specific identifier for a total of 64 bits for login
validation.
StorageTek’s company ID is 24 bits consisting of: 500104F (hex)
The SL8500 includes the dynamic World Wide Name (dWWN) feature, that,
when enabled, assigns world wide names to the library drive
slots
rather than
the drives themselves.
This feature allows you to swap or replace devices, such as tape drives,
without bringing down the entire operating system to update a .conf file or
GEN file because of a new WWN.
Changing the WWN feature must be coordinated with the system
administrator and is usually enabled during installation.
Note:
Both library and tape drives must have microcode or firmware that
supports the dynamic World Wide Naming feature.
Important:
Tape drives that are migrated from other libraries
will be assigned a different
WWN when installed in an SL8500 library. The existing network may not
associate this new WWN with the originally assigned name.
This will require a reconfiguration of the network for these tape drives.
Arbitrated Loops
SL8500 tape drive configurations
do not support Arbitrated Loops
.
Summary of Contents for StorageTek StreamLine SL8500
Page 4: ...Summary of Changes iv SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 12: ...Contents xii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 18: ...Tables xviii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 76: ...Introduction 56 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 97: ...E24254 01 Chapter 3 Site Survey Forms 77 Site Survey Forms Figure 21 Content Management Plan ...
Page 137: ...E24254 01 Chapter 4 Site Preparation 117 Site Preparation ...
Page 138: ...Site Preparation 118 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 198: ...Electrical Conversions 176 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 206: ...Comparisons 184 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 233: ...E24254 01 Appendix H Partitioning 211 Partitioning Make copies as necessary ...
Page 240: ...Partitioning 218 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 251: ...E24254 01 Appendix J Work Sheets 229 Work Sheets Figure 73 Content Management Work Sheet ...
Page 276: ...Index 254 SL8500 Systems Assurance Guide June 2011 E24254 01 ...
Page 277: ......
Page 278: ...Oracle Corporation Worldwide Headquarters 500 Oracle Parkway Redwood Shores CA 94065 U S A ...