Asset ID:	1-71-1006590.1
Update Date:	2012-01-26
Keywords:

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Solution Type  Technical Instruction Sure

Solution  1006590.1 :   Configuring HDLM on Sun StorEdge[TM] 99x0 LUs addressed above 256 can drop existing HDLM LUs  


PreviouslyPublishedAs
209197

Applies to:

Sun Storage 9910 System
Sun Storage 9960 System
Sun Storage 9970 System
Sun Storage 9980 System
Sun Storage 9990 System
All Platforms

Goal

If you configure a HDLM Logical Unit (LU) with an address greater than 256, you may lose/drop one of the other HDLM LUs.

Solution

The HDLM release notes states the limitation of 256 LUs per host. The obvious inference is that you can't configure more than 256 physical LUs per host. What is less obvious, is HDLM does not support LUs with addresses greater than 256. In the following example, 3 LUs ave been mapped to a Solaris host configured with HDLM.
cXtXd1 <---the d# = the LU number assigned in Storage Navigator
cXtXd2
cXtXd3
If you: -add a 4th LU with an address higher than 256 -then configure it with HDLM you may lose one of the other 3 LUs. cXtXd2 cXtXd3 cXtXd257 In this example, d1 is gone, lost by the addition of d257.


Internal Comments
See ESC 1-8477187 where this behavior was seen. The issue was sent to HDS, and they explained this is a current limitation with HDLM. There was no information as to when/if this limitation would be lifted.

99x0, hdlm, 256, limit, greater, LU, maximums, maximum, LUN
Previously Published As
81501

Change History
Date: 2005-05-20
User Name: 111868
Action: Approved
Comment: checked audience
checked metatags
checked tradmarks
checked expiry date
publishing
Version: 3
Date: 2005-05-19
User Name: 111868
Action: Accept
Comment:
Version: 0
Date: 2005-05-19
User Name: 34660
Action: Approved
Comment: changed formating and references to LDEVs (to LUs).

corrected wrong escalation number ref in internal section.
Version: 0
Date: 2005-05-18
User Name: 34660
Action: Add Comment
Comment: Hi,

I couldn't find the esc mentioned in the doc ( 1-8626721 ) is that number correct ?
I think the term LUNs (or even 'LU's that Hitachi use in their HDLM manuals) should be used instead of LDEVs, LUNs being what is presented to Solaris/HDLM and LDEVs being the back end device, do you agree ?
Version: 0
Date: 2005-05-15
User Name: 34660
Action: Accept
Comment:
Version: 0
Date: 2005-05-11
User Name: 38429
Action: Approved
Comment: Pls. review
Version: 0
Date: 2005-05-11
User Name: 38429
Action: Created
Comment:
Version: 0
Product_uuid
15644879-f179-11d8-ab63-080020a9ed93|Sun StorageTek 9990 System
8db79c6e-d52b-11d8-ab52-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.4 (Windows)
c8b4bc44-d52a-11d8-ab52-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.4 (Solaris)
80d8f630-d528-11d8-ab52-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.4 (Linux)
d93e17aa-d529-11d8-ab52-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.4 (HP-UX)
e7377cb8-d52c-11d8-ab52-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.4 (AIX)
f8722bbb-bc10-11d8-ab52-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.3 (Linux)
cec02cca-52a2-11d8-9e3a-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.2 (Windows NT/Windows 2000)
e15a4a63-52a2-11d8-9e3a-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.2 (Solaris)
ff9d067c-52a2-11d8-9e3a-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.2 (Linux)
fca04139-52a2-11d8-9e3a-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.2 (HP-UX)
e0840ea0-52a2-11d8-9e3a-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.2 (AIX)
34e5b43c-77e7-452c-a025-64e4f94ea928|Sun StorageTek 9900 Dynamic Link Manager 5.1 (Windows NT/Windows 2000)
a98c9b00-e480-11d7-82d3-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.1 (Solaris)
dbac06c8-e480-11d7-82d3-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 5.1 (AIX)
1414d800-1176-4cc9-b41e-2d5ef86a4f66|Sun StorageTek 9900 Dynamic Link Manager 5.0 (Windows NT/Windows 2000)
549c2b68-5106-464e-b4cd-5af7c0252513|Sun StorageTek 9900 Dynamic Link Manager 5.0 (Solaris)
8bf1629f-a4ab-473c-b7d9-56b1ac6a4084|Sun StorageTek 9900 Dynamic Link Manager 5.0 (AIX)
30bc3c85-58f6-45c5-902d-df8bb3ef5124|Sun StorageTek 9900 Dynamic Link Manager 4.1 (Solaris)
3495ede5-0590-11d8-84cb-080020a9ed93|Sun StorageTek 9900 Dynamic Link Manager 4.0 (Linux)
c2428fbe-8ab7-41d0-8b6e-ab489823c9d4|Sun StorageTek 9980 System
4ea4b951-9fc9-4f1f-b64e-69572a400fb4|Sun StorageTek 9970 System
2a94fb3c-0a18-11d6-90a8-c9c08656284f|Sun StorageTek 9960 System
2a918ae2-0a18-11d6-834a-c679537eebe7|Sun StorageTek 9910
f55c65ae-16a0-11d7-82ad-99701a4c6e31|Sun StorageTek 9900V Series Array

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