Aliases - FC, Device, Global...?

Does anybody know the difference between FC aliases, Device Aliases and Global Aliases?
The FC (aka zone?) aliases are held in the running config on the switch and also seem to be specific to a VSAN.
Global Aliases seem to be a Fabric Manager thing - does the Fabric Manager server hold a database of aliases so that they are still recognised if you plug the device into a seperate physical SAN managed by the same FM server? Presumably if you connect via a different FM server to the same switch you would get different global aliases because you are connecting to a different database?
Device aliases seem to be an extension of fc aliases (in that they are stored in the running config) that are not VSAN specific and are not restricted to being used for zoning only.
Is that about right? Which of the above are people using and how do you find it? I'm still using fcaliases, purely because I haven't tried the others, although Device Aliases looks like an interesting option...
Thanks,
Allan.

You can find a pretty good description and usage in the MDS Cookbook http://www.cisco.com/application/pdf/en/us/guest/products/ps6039/c1067/ccmigration_09186a008054084e.pdf.
Device aliases and FMS Global Device Aliases are the same thing (FMS just added the word Global).
The problem with fcaliases (that device aliases solves) is that with fcaliases I could have the same alias defined in two different vsans with a different pwwn in each pwwn. Secondly, fcaliases are only restricted to zoning. Not IVR, not QOS, not CLI output (like with 'show fcns' or 'show flogi'..)
In SANOS 3.1(2), you can make a zone member of type enhanced device alias. This means that now if you swap out the hba you only have to change the device alias database, and not modify the zones. Think of it like updating the dns server with a new IP address, you don't have to tell everyone that your new hostname is www.xyz.com b/c www.abc.com failed.

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  • TextfieldCell in Transparent Tableview, shows background app during editing

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    Helpful and Handy Links
    Captivate Wish Form/Bug Reporting Form
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    SunOS Release 5.10 Version Generic_127111-06 64-bit
    Copyright 1983-2007 Sun Microsystems, Inc. All rights reserved.
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    Removing SUNWkscspm..done
    Removing SUNWksc.....done
    Removing SUNWjscspmu.done
    Removing SUNWjscspm..done
    Removing SUNWjscman..done
    Removing SUNWjsc.....done
    Removing SUNWhscspmu.done
    Removing SUNWhscspm..done
    Removing SUNWhsc.....done
    Removing SUNWfscspmu.done
    Removing SUNWfscspm..done
    Removing SUNWfsc.....done
    Removing SUNWescspmu.done
    Removing SUNWescspm..done
    Removing SUNWesc.....done
    Removing SUNWdscspmu.done
    Removing SUNWdscspm..done
    Removing SUNWdsc.....done
    Removing SUNWcscspmu.done
    Removing SUNWcscspm..done
    Removing SUNWcsc.....done
    Removing SUNWscrsm...done
    Removing SUNWscspmr..done
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    Removing SUNWscva....done
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    Removing SUNWscvm....done
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    Removing SUNWscsckr..done
    Removing SUNWscu.....done
    Removing SUNWscr.....done
    Removing the following:
    /etc/cluster ...
    /dev/did ...
    /devices/pseudo/did@0:* ...
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    Skipped node "n20-1-sup" - already configured
    Adding adapter "qfe1" to the cluster configuration ... skipped
    Skipped adapter "qfe1" - already configured
    Adding adapter "qfe5" to the cluster configuration ... skipped
    Skipped adapter "qfe5" - already configured
    Adding cable to the cluster configuration ... skipped
    Skipped cable - already configured
    Adding cable to the cluster configuration ... skipped
    Skipped cable - already configured
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    Copying the postconfig file from "n20-2-sup" if it exists ... done
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    Initializing NTP configuration ... done
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    Updating file ("hosts") on node n20-2-sup ... done
    Updating file ("ntp.conf.cluster") on node n20-3-sup ... done
    Updating file ("hosts") on node n20-3-sup ... done
    Log file - /var/cluster/logs/install/scinstall.log.938
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    rebooting...
    R
    LOM event: +103d+20h44m26s host reset
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    keyboard not found.
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    Copyright 1983-2007 Sun Microsystems, Inc. All rights reserved.
    Use is subject to license terms.
    Hostname: n20-1-sup
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    NOTICE: clcomm: Path n20-1-sup:qfe1 - n20-3-sup:qfe1 being constructed
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    NOTICE: CMM: Node n20-3-sup (nodeid: 3, incarnation #: 1205265086) has become reachable.
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    NOTICE: clcomm: Path n20-1-sup:qfe5 - n20-2-sup:qfe5 being initiated
    NOTICE: clcomm: Path n20-1-sup:qfe5 - n20-2-sup:qfe5 online
    NOTICE: clcomm: Path n20-1-sup:qfe1 - n20-3-sup:qfe1 being initiated
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    NOTICE: CMM: Node n20-3-sup (nodeid = 3) is up; new incarnation number = 1205265086.
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    Mar 13 14:02:23 in.ndpd[351]: solicit_event: giving up on qfe5
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    did subpath /dev/rdsk/c2t3d0s2 created for instance 12.
    did subpath /dev/rdsk/c1t3d1s2 created for instance 3.
    did subpath /dev/rdsk/c1t3d2s2 created for instance 6.
    did subpath /dev/rdsk/c1t3d3s2 created for instance 7.
    did subpath /dev/rdsk/c1t3d4s2 created for instance 8.
    did subpath /dev/rdsk/c1t3d5s2 created for instance 9.
    did subpath /dev/rdsk/c1t3d6s2 created for instance 10.
    did subpath /dev/rdsk/c1t3d7s2 created for instance 11.
    did subpath /dev/rdsk/c2t3d1s2 created for instance 13.
    did subpath /dev/rdsk/c2t3d2s2 created for instance 14.
    did subpath /dev/rdsk/c2t3d3s2 created for instance 15.
    did subpath /dev/rdsk/c2t3d4s2 created for instance 16.
    did subpath /dev/rdsk/c2t3d5s2 created for instance 17.
    did subpath /dev/rdsk/c2t3d6s2 created for instance 18.
    did subpath /dev/rdsk/c2t3d7s2 created for instance 19.
    did instance 20 created.
    did subpath n20-1-sup:/dev/rdsk/c0t6d0 created for instance 20.
    did instance 21 created.
    did subpath n20-1-sup:/dev/rdsk/c3t0d0 created for instance 21.
    did instance 22 created.
    did subpath n20-1-sup:/dev/rdsk/c3t1d0 created for instance 22.
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