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AIX2012/02/17 10:08

rootvg사이즈를dynamic하게변경하기

UPDATED: Grow your rootvg on the fly (from 6.1 TL 4)

AnthonyEnglish| Oct 11 2010 | Tags:  volume_group resize rootvg 6.1 7.1 extendlv spare aix 5.3 chvg growth backend disk san lun| Comments (11)  |  Visits (5,543)
There are lots of good reasons for having spare disk for rootvg, as I looked at in the post make way for rootvg. With virtual disks you can resize your volume group on the fly:
 

Increase rootvg dynamically


If your rootvg “disk” is actually virtual, such as a SAN LUN or a logical volume on the VIO server, then it usually can be expanded on the SAN (or using extendlv on the VIOS) and then recognised on the AIX LPAR using the -g flag of the chvg command:

chvg -g rootvg


 Note: this is supported for rootvg and concurrent vgs from AIX 6.1 TL 4. See IBM technote IZ80021 http://bit.ly/cmHjmy

 Resizing the rootvg disk
 
 I tried to increase rootvg on an LPAR running AIX 5.3 TL 11 and hit the following error:
 

 aix53_lpar # chvg -g rootvg

0516-1380 chvg: Re-sizing of the disks is not supported for the rootvg.

 0516-732 chvg: Unable to change volume group rootvg.

Looks like the volume group needed to be varied off and varied on again. For rootvg, that means a reboot.

No reboot on AIX 6.1

In AIX 6.1 (from TL 4 - use oslevel -sto check your AIX level), you can increase rootvg on the fly.

 aix61_lpar:/# chvg -g rootvg

 0516-1164 chvg: Volume group rootvg changed.  With given characteristics rootvg can include up to 16 physical volumes with 2032 physical partitions each.

 Sounds like yet another reason to migrate to AIX 6.1.

이 글은 스프링노트에서 작성되었습니다.

Posted by ultrasound
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storage2012/02/07 09:55

[기술문서/FAQ] CIFS의 최대 접속가능한 세션 갯수는?

Q: CIFS의 최대 접속가능한 세션 갯수는?

 

A: CIFS 최대 세션갯수는 시스템 메모리 용량에 의해 제한을 받습니다. 각 제품군별 최대 접속 가능 세션및 관련 limitation은 아래와 같습니다.

 

Appliance기준 최대 접속 가능 구성입니다. 


CIFS limits by storage system memory    1GB      2GB        4GB        8 GB       32 GB    
Maximum number of connections           13,200   32,000     64,000     96,000     96,000    
Maximum number of shares                26,400   64,000     128,000    192,000    192,000    
Maximum number of share connections     52,800   128,000    256,000    384,000    384,000    
Maximum number of open files            264,000  640,000    1,280,000  1,920,000  1,920,000    
Maximum number of locked files          292,672  705,536    1,411,072  2,116,608  2,116,608    
Maximum number of locks                 585,344  1,411,072  2,822,144  4,233,216  4,233,216

이 글은 스프링노트에서 작성되었습니다.

Posted by ultrasound
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