Basic L1 and L2 AIX Interview Questions1. How will you convert the jfs filesystem to jfs2 filesystem? 2. What procedure do you follow while migration? 3. Nimadm consist of how many steps? 4. What is difference between Etherchannel and link aggregation? 5. In Ethernet channel one switch goes bad, what happens? 6. In Link aggregation one adapter goes bad, what happens? 7. Where you can find user limits? 8. How to know Ethernet adapter is 2 port or 4 port? 9. When user login first time what are the files should be updated? 10. How to delete the datavg already we have a backup? 11. What are the prerequisites for client while doing migration by using nimadm? 12. While increasing the filesystem its throws an error , What are the possible reasons? 13. Normal vg creation command? 14. What is quorum? 15. Vg contents what like vgda? 16. How to see the IP address of the server? 17. If you run ifconfig command can you see the subnetmask ? 18. What is uid and gid? 19. Lv name consist how many max characters? 20. While doing ftp its not allowing more than 3GB, what might be the reason? 21. How to change the fsize of the user? 22. If in vg first pv is failed, if we reboot the server, it will boot or not, in case of mirrored vg? 23. TL upgrade? 24. Is downtime is required to update TL? 25. Have you done migration in your environment? 26. What are the pre-cautions have to take before migration? 27. After migration how do you know migration is successful or not? 28. How do you know backup will work or not which was taken before migration ? 29. If you Auto mount file, which file read ? 30. How to set password never expire ? 31. How will rename your datavgname ? 32. One file system mounted in nfs one client can read another cant write anything, what is the reason ? 33. What is the configuration file for paging device. ? 34. What is Aduit file and location ? 35. How to activate the paging. ? 36. What is sysdump. ? 37. How do you configure the primary dump. ? 38. How you delete the sysdump. ? 39. What is the meaning histsize,account_locked,rlogin attribute in /etc/security/user? 40. If maxage=13, how long the user can user the passwd? html#ixzz2hphVSxnE L2 and L3 AIX Interview Questions on HACMP and VIOS Tell me about your technical background ? . How will you reduce pv in the vg? 67.com/2013/09/aix-l1-and-l2-interview-questionsby.. how types of vg's in aix? 59. How will you see the boot device? 75.tsmtutorials. Stanza for /etc/passwd? and will it contain? 51. How will you create user? 50.41. Have you done TL upgradation before. How will you see the bootlist order? Read more: http://www. How to clear the boot record of pv? 73.big vg . Stanza for /etc/security/password? 52. What is mean by wwpn number? how will u see that? 42. How many types of vg’s are there? 68. How will you change the limits? 71. How will you convert normal vg to big vg ? 63. How many pv's having scalable vg? 60. How many types of lv's are there in aix? 58. Is it require downtime to change normal to scalable vg and what will u do? 55. How will create normal vg and many pv"s having normal vg? 53. LVM structure? 46.scallable vg? 45. Why are you using dump device? 62. How will you set the boot record? 74. What is the max filesystem size of jfs? 70. Differnce b/w etherchannel and link aggregation? 43. lv types? 48. What is the significance of t-factor? 65. How will you change pp size in vg and how will do this activity? 61. Once TL Upgradation completed and if it is not the expected level means what will u do? 44. How many types of vg’s are there? 69. You have one BIG vg. How many types of vg's? 54. Diference b/w normal vg . Tell about /etc/passwd and /etc/security/passwd? 72. How will you unmirror rootvg? 66. tell me the perquisites ? 57. You trying to add one more pv. How to create the filesystems?how will u proceed? 47.which having 1016 pv. How will you conform a vg is normal or big vg and scalable vg? 64. How will you see mac address? 56. is it possible to add one more pv? 49. 1 . What are the precautions you have to take before migration? Oracle 9i is running after migration from 5. how will you proceed? What is use of user limits file? How will you see the wwpn number for running lpar? How will you see the wwpn number of new lpar? For new lpar how many wwpn number you can find how many wwpn no. I have reduced it to 5GB but still it is showing 7GB? npiv configuration? Which wwpn will you share with storage team? What is the vlan id for the control channel? How will you see wwpn numbers after npiv configuration? After sharing wwpn number with storage guys they assigned LUN to lpar but it is not appearing at client side . what are the possible reasons? After migration how do you know migration is successful or not? How do you know backup will work or not which is taken before migration ? Custer goes into barrier state ?how will u troubleshoot? RG goes into error state. what will happen? .3 to 6. ip address and hostname conflicts are occurred. but sea is not configured. To avoid that how will you configure it? In HACMP cluster DMS.s? why they are used for it? How will you convert the jfs filesystem to jfs2 filesystem? What are the precautions for vios upgradation? While creating the virtual Ethernet adapter for SEA what we have to select for that adapter? In dual which is primary? After upgradation of vios lpar showing some pv are in missing. application team is not able to access . what is that? Why we have select access external network? I have created 4 lpars but sea is not created what will happen ? How can you increase max processing units value in caped mode? One file with data 10GB exits. what are the reasons? While restoring the mksysb of one server into another new server. it is not going to move ? how will u troubleshoot? What is cluster ST_INIT ? What is cluster ST_VOTING? What is control channel? If VIO server has 4 sea how many control channels are required? The adapters which are going into participate sea have to select check box of one of the field. when it will happen? Explain HACMP upgradation? In dual vios for sea adapter ha_mode ? If ha_mode is sharing what will happen? We have 4 lpars with same vlan . Read more: http://www. How do you troubleshoot this ? How to rollback to my pervious configuration without snapshot ? One file system mounted in nfs . how do you replace the adapter What are the policy in HACMP ? In HACMP the node is working fine. AIX L2 and L3 Interview Questions What is the configuration file for paging device ? What is Audit file and location ? How to activate the paging ? What is sysdump ? How to configure the primary dump ? How to delete the sysdump ? If one Ethernet adapter fails.html#ixzz2hphiGUkM Below are some of the latest AIX L2 and L3 Interview Questions by IBM. Did some changes in cluster and synchronized it but it fails and i dont have previous snapshot. after i rectify that again ill try to Synchronize but again i get error .com/2013/09/aix-interview-questions-by-ibm2013. one client can read and another client cant write anything what is the reason ? How will your datavgname ? AIX Scenario Based & Troubleshooting Questions There are 4 pv’s in a vg .tsmtutorials. Topics covers most of the AIX core concepts. which pv’s are got corrupted how would you confirm and how will you resolve this ? One PV is showing as a missing state in a vg how will you recover it? . How do you replace it in vios server ? In NPIV. 4 port adapter are there and one port fails. How do you get back to normal or previous configuration ? In HACMP synchronisation fails but it was locked with synchronisation how to release the lock ? Auto mount file which file read ? How to set password which never expire ? How to move I/O adapter which is in desired mode from one lpar to another lpar ? What are the deamons for DLPAR ? How to check if the DLPAR is working or not ? What is capped & uncapped ? What is virtual processor ? How to create hmc user ? How to login into pesh shell in hmc ? What is hscpe in hmc ? How to do offline with snapshot migration ? When try to Synchronising HACMP i got error . I want to create a normal vg by using this pv. 9. then it is possible to move to other core by using LPM? How will you see the HMC version? I have HMC. how will I get the # prompt through HMC? By using command line in HMC console the lpar is able to open but through GUI I cant able to open then how can you troubleshoot it? Read more: http://www. Hope it helps for someone.. 6. 8. one of my node is down then serviceip is pingable or not and it is accessible or not ? I have four node cluster. then the service ip is accessible or not. 4. How will you confirm a vg is normal or big vg and scalable vg? How will you convert normal vg to big vg ? I have a pv with 1 TB (1024 GB). if it is accessible from where it is accessible ? In the above scenario the entire network is down then what is the solution ? In one ASMI one lpar is there. I want to move the same lpar but it has different ASMI. 12.html#ixzz2hphmYxEC This post has latest (August 2013) interview questions asked on IBM AIX High Availability Cluster Multiprocessing (HACMP) concepts and some of the scenario based interview questions asked on IBM HACMP. how much PP size it will take.. All The Best IBM HACMP Interview Questions : 1..tsmtutorials. What is the active-active cluster? What are the policies in Hacmp? In your cluster what are you using for fallback policy? cluster goes into barrier state ?how will u troubleshoot? RG goes into error state is not going to move ? how will u troubleshoot? what is cluster ST_INIT ? what is cluster ST_VOTING? What are the RG policies? What is the startup policy? What is the fall over policy? Waht is HACMP Policy in HACMP .. 11. 10.com/2013/10/aix-scenario-based-andtroubleshooting.. how will you do it? Down time is required ? In the above scenario I don’t want downtime then how will you do it? What do you check before doing LPM? From which Power VM onwards LPM will supports? Is it support for P7 core also? In one core my lpar is created with dedicated processor. 3. 5. explain this scenario? What is the significance of t-factor? How will you convert jfs type filesystem to jfs2 type filesystem? What is the significance of persistent ip in the HACMP cluster and Which version you are using in HACMP cluster? I have 2 node cluster. one of the node in cluster is down then Persistent ip in that node is pingable or not ? I have 2 node cluster. 2. one of my base ip is down in accessible node. 7. one of my base ip is down in accessible node. how will I get the # prompt through HMC? What you are checking before doing LPM? From which Power VM onwards LPM will supports? Is it support for P7 core also? what is the purpose of share attributes in vio's? What is use of user limits file? How will you see the wwpn number for running lpar? How will you see the wwpn number of new lpar? . I have 2 node cluster. then the service ip is accessible or not. In Hacmp synchronization fails but it was locked with synchronization how to release the lock. 6. Cluster vg is locked how will unlock it? 13. Virtual I/O Server (VIOS) Interview Questions : 1. In HACMP cluster DMS. Two node cluster environment. 2. In the above scenario the entire network is down then what is the scenario ? 6. Did some changes in cluster and synchronize it but it was fails and i dont have previous snapshot. What is the minimum seconds of heart beat interval? 15. when it will happen? 7. 4. if it is accessible from where it is accessible? 5. When try to Synchronize in hacmp i got error after i rectify that again ill try to Synchronize that is also error 10.html#ixzz2hpiGLncJ roubleshooting based questions. one of my node is down then serviceip is pingable or not and it is accessible or not? 4. How to flush the service IP IBM HACMP Scenario Based Interview Questions : 1.13. What is the significance of persistent ip in the HACMP cluster and Which version you are using in HACMP cluster? 2. HACMP up gradation? 8. have four node cluster. How do you get back to normal or previous configuration. one of the node in cluster is down then Parsistent ip in that node is pingable or not? 3. Read more: http://www. In cluster sync is failed and I don’t have latest samp image of it how will u recover it? 12. 17. Some one done changes in cluster with out using c_spoc like chfs command what you are going to do and how will u recover it? 14. This situation one node is failure what will happen? 16. How will you see the HMC version? I have HMC. The cluster status is unmanaged stat. 8.com/2013/08/ibm-high-availability-cluster.tsmtutorials. how to rollback to my pervious configuration?? Without snapshot 11. How will you trouble shoot it 14. 3. If the RG is in Error what you will do. I have 2 node cluster. 7. 5. In Hacmp the node is working fine. How to do offline with snapshot migration 9. how can you increase max processing units value in caped mode? 21. One lpar have 3. npiv configuration? 22. how to move I/O adapter which is in desired mode from one lpar to another lpar 26. how to check the DLPAR is working or not 28. While creating the virtual Ethernet adapter for SEA what we have to select for that adapter? 12. I want to move the same lpar but it has different ASMI. After up gradation of vios lpar showing some pv are in missing. why we have select access external network? 20. The adapters which are going into participate sea have to select check box of one of the field. if vio server has 4 sea howmany control channels are required? 18. What is capped and uncapped? 36. what is that? 19. For new lpar how many wwpn number you can find how many wwpn no.9. how to login into pesh shell in hmc 33. In the above scenario I don’t want downtime then how will you do it? 3. What is virtual processor? 31. which wwpn will you share with storage team? 23. In one core my lpar is created with dedicated processor. What is a virtual memory? VIOS Scenario & Troubleshooting based Interview Questions : 1. By using command line in HMC console the lpar is able to open but through GUI I cant able to open then how can you troubleshoot it? 5.5 to 4 it showing error like u cannot increase this value whatis the reason? 6.s? why they are used for it? 10. how to create hmc user 32. what is the vlan id for the control channel? 24. what is control channel? 17. In one ASMI one lpar is there. If one lpar has 3. how will you see wwpn numbers after npiv configuration? 25. To avoid that how will you configure it? 14. In dual vios for sea adapter ha_mode ? 16. what are the demons for DLPAR 27. what is capped 29.5 cpu limits how many minimum and and maximum virtual processors required? . In dual vio which is primary? How to know? 13. If ha_mode is sharing what will happen? 15. what is uncapped 30. What is virtual process? 35. then it is possible to move to other core by using LPM? 4. What are the precautions for vios upgradation? 11. how will you do it? Down time is required ? 2.5 cpu limits as a desired value when iam going to do dlpar from 3. what is hscpe in hmc 34. What is a micro partition? 37. tsmtutorials.html#ixzz2hpiUyl4r .com/2013/09/aix-virtual-io-server-vios-latest.Read more: http://www.