read-only zoning with MDS Switch

mlwilliamson · ‎01-12-2012

I am trying to understand read only zoning - particularly this statement in the MDS 9000 Guide:

"If two members belong to a read-only zone and to a read-write zone, the read-only zone takes priority and write access is denied."

What I am wanting to do is this - I have ESXi servers that are zoned to see my storage ports on my SAN, now I want to zone a Windows server to see those same storage ports on the SAN so that it can read those LUN's and perform backups of them. I want the Windows server to see them as read-only though. I am not sure how to interpret the statement above - does it mean that since my storage ports are in multiple zones where they are normally read-write but now they are also in a zone where they are read-only that they will only by read-only in all zones? That doesn't seem like it should work that way but I have never configured a read-only zone so I don't really understand.

maminhas · ‎01-12-2012

If you have same pwwn on both zones.one with read-write & other with read-only, less privilige takes priority.

there is a LUN bases zoning feautre also on MDS (both read-only and Lun-based-zoning requires Enterprise License)

take a look on the complete requirements of Read-only zones and Lun based zoning

http://www.cisco.com/en/US/docs/switches/datacenter/mds9000/sw/4_1/configuration/guides/cli_4_1/zone.html#wp1682388

mlwilliamson · ‎01-12-2012

So that I am clear my two zones are below - the only difference in them is the first member (which is my ESX host) all the other members are the same storage ports on the same SAN. So in this case if Zone 1 is read-only and Zone 2 is default read-write does that mean that the storage ports would be read only in both zones?

Zone 1

WWN eva-mds1-sw fc7/12 eva2vmsnap-hba1 50:01:43:80:05:66:30:32 0x500024 [...]

WWN ybor-mds1-sw fc1/4 HP 50:00:1f:e1:50:1d:25:2e 50:00:1f:e1:50:1d:25:2e 0x6f0021 [...]

WWN eva-mds1-sw fc1/4 eva8400-hsv1-fp1 50:00:1f:e1:50:1d:25:18 0x500008 [...]

WWN eva-mds1-sw fc2/8 eva8400-hsv1-fp3 50:00:1f:e1:50:1d:25:1a 0x500009 [...]

WWN eva-mds1-sw fc1/12 eva8400-hsv2-fp1 50:00:1f:e1:50:1d:25:1c 0x500005 [...]

WWN eva-mds1-sw fc2/11 eva8400-hsv2-fp3 50:00:1f:e1:50:1d:25:1e 0x50000a [...]

WWN ybor-mds1-sw fc1/11 ybor8400-hsv1-fp1 50:00:1f:e1:50:1d:25:28 0x6f001e [...]

WWN ybor-mds1-sw fc2/11 ybor8400-hsv1-fp3 50:00:1f:e1:50:1d:25:2a 0x6f001f [...]

WWN ybor-mds1-sw fc3/11 ybor8400-hsv2-fp1 50:00:1f:e1:50:1d:25:2c 0x6f0020 [...]

Zone 2

WWN ybor-mds1-sw fc4/3 ybor10esx-hba1 50:01:10:a0:00:86:1e:1c 0x6f0003 [...]