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Hi Guys,
The DLA is getting introduced into our env. starting 2010 Jan.
I have these few questions on DLA
1. How can I map a LUN to an FA w/o lun any address being mentioned ??
2. Again even though we can use DLA to get to assign the devices past FF (256) it still comes down to how many LUN's we can have on that FA (inc. meta members)
3. Consider this situation..
I have a Solaris host 'Host A' and I want to use an FA 08AA on a DMX with DLA enabled.
I use the devices 0010,0011,0012,0013 and map it to the FA 08AA and use the LUN addresses 1,2,3 and 4 on the FA and mask it to the Solaris host Host A...now I choose 4 more devices 00A0,00A1,00A2 and 00A3 and use the LUN addresses 100,101,102 and 103 on the FA and since the DLA is enabled on this FA I want to use the LUN addresses 1,2,3,4.Can I choose these same LUN Addresses ??
Is LUN offset and DLA one and the same ??
Thanks
Sumanth
The DLA is getting introduced into our env. starting 2010 Jan.
I have these few questions on DLA
1. How can I map a LUN to an FA w/o lun any address being mentioned ??
2. Again even though we can use DLA to get to assign the devices past FF (256) it still comes down to how many LUN's we can have on that FA (inc. meta members)
3. Consider this situation..
I have a Solaris host 'Host A' and I want to use an FA 08AA on a DMX with DLA enabled.
I use the devices 0010,0011,0012,0013 and map it to the FA 08AA and use the LUN addresses 1,2,3 and 4 on the FA and mask it to the Solaris host Host A...now I choose 4 more devices 00A0,00A1,00A2 and 00A3 and use the LUN addresses 100,101,102 and 103 on the FA and since the DLA is enabled on this FA I want to use the LUN addresses 1,2,3,4.Can I choose these same LUN Addresses ??
Is LUN offset and DLA one and the same ??
Thanks
Sumanth
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Posted November 10th, 2009 12:00
i had very bad experience doing just that, take a look at these discussions
https://forums.emc.com/forums/thread.jspa?threadID=67721&tstart=0
https://forums.emc.com/forums/thread.jspa?messageID=6065181658
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Posted November 10th, 2009 12:00
To present the 8 luns to the host with DLA:
symmask -sid XXX -wwn XXX -dir 8a -p 0 add devs 10:13,a0:a3 -lun 0
This will apply a host lun address starting at 0 for each of the luns in the order they are listed. You cannot assign the same host lun number to two different devices.1658
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Posted November 10th, 2009 12:00
Thanks a lot Dynamox.
Sumanth1658
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Posted November 10th, 2009 12:00
Thanks for the replies guys but If I assign the first four devices using static lun addressing and then assign my next four using DLA..can I do it using the same number ??1658
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Posted November 10th, 2009 12:00
i let symcli figure out the next available LUN
symmask -sid 123 -wwn 1000XXXXX -dir 8c -p 0 add devs 0010,0011,0012,0013,00A0,00A1 -dynamic_lun1658
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Posted November 10th, 2009 12:00
dynamic lun addressing is an initiator setting, not an FA settings. It's something you enable during your masking process. DLA is replacing LUN offset feature.1658
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Posted November 11th, 2009 06:00
Any place where I can get some more insight into DLA..Any Docs available on powerlink I can download and get into it deep..1658
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Posted December 30th, 2009 05:00
Thanks for the replies guys but If I assign the first four devices using static lun addressing and then assign my next four using DLA..can I do it using the same number ??
for your specific question !!
NO...
the first four devices are already referred to as 1,2,3,4, ...so while assigning the next devices using DLA...will take the next available no.5,6,7,8..etc...this safely assuming lun id "0" is already taken...if not the second time around one of your devices will take the id 0 and this could land u in some soup if ur not expecting any boot luns.
Hope this makes sense...
Terence
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Posted January 20th, 2010 05:00
you can also add "masking dynamic_lun;" in CMD files
map dev XXX to dir 4D:0 lun=XXX, wwn=XXXXXXXXXXXXXX, masking dynamic_lun;
dynamox
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Posted November 11th, 2009 07:00
https://powerlink.emc.com/nsepn/webapps/btg548664833igtcuup4826/km/live1//en_US/Offering_Technical/Technical_Documentation/300-005-734.pdf