MegaCLI / MegaRAID Drive GroupsMegaCLI causes drive “Other Error”How to create Raid 10 with megacliExpand Raid 10 set on MegaRAID LSI 9261-8iLSI MegaRAID SAS 9261-8i: Disk isn't recognized after replacementRAID level confusion (MegaCli vs megasasctl output)How does LSI MegaRAID actually lay out RAID10 sets?MegaCli reports an inconsistent number of physical disksMegaRAID Controller HDD Not SupportedMegaRAID/megacli - Mixed RAID on same disksLSI MegaRAID reports bad drive but SMART status is good

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MegaCLI / MegaRAID Drive Groups


MegaCLI causes drive “Other Error”How to create Raid 10 with megacliExpand Raid 10 set on MegaRAID LSI 9261-8iLSI MegaRAID SAS 9261-8i: Disk isn't recognized after replacementRAID level confusion (MegaCli vs megasasctl output)How does LSI MegaRAID actually lay out RAID10 sets?MegaCli reports an inconsistent number of physical disksMegaRAID Controller HDD Not SupportedMegaRAID/megacli - Mixed RAID on same disksLSI MegaRAID reports bad drive but SMART status is good






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2















In the MegaRAID SAS Software User Guide it is stated that a Drive Group includes one or more virtual drives. An excerpt from the document is:



"A virtual drive is a partition in a drive group that is made up of contiguous data segments on the drives. A virtual drive can consist of these components:



  • an entire drive group

  • more than one entire drive group

  • a part of a drive group

  • parts of more than one drive group

  • a combination of any two of these conditions."

My first question is the following: How can I create a drive group and inside that group have more than one virtual drive ?



In the User Guide there is just one relevant command, regarding drive groups. The guide says that this command creates a new drive group:



MegaCli –CfgLDAdd -RX[E0:S0,E1:S1,...] [WT | WB] [NORA | RA] [Direct |
Cached] [CachedBadBBU|NoCachedBadBBU] [-szXXX [-szYYY ...]] [-strpszM]
[-Hsp[E0:S0,...]] [-AfterLdX] | -Force [FDE|CtrlBased] [-Cache] [-enblPI
-val] -aN


In my opinion, running this command does not create a drive group.



My second question: Is a RAID Array the same thing as a Drive Group, in MegaRAID ?
I am assuming they are the same thing.



What I actually want to achieve is to create a RAID Array , and in that array more than one virtual volumes.










share|improve this question




























    2















    In the MegaRAID SAS Software User Guide it is stated that a Drive Group includes one or more virtual drives. An excerpt from the document is:



    "A virtual drive is a partition in a drive group that is made up of contiguous data segments on the drives. A virtual drive can consist of these components:



    • an entire drive group

    • more than one entire drive group

    • a part of a drive group

    • parts of more than one drive group

    • a combination of any two of these conditions."

    My first question is the following: How can I create a drive group and inside that group have more than one virtual drive ?



    In the User Guide there is just one relevant command, regarding drive groups. The guide says that this command creates a new drive group:



    MegaCli –CfgLDAdd -RX[E0:S0,E1:S1,...] [WT | WB] [NORA | RA] [Direct |
    Cached] [CachedBadBBU|NoCachedBadBBU] [-szXXX [-szYYY ...]] [-strpszM]
    [-Hsp[E0:S0,...]] [-AfterLdX] | -Force [FDE|CtrlBased] [-Cache] [-enblPI
    -val] -aN


    In my opinion, running this command does not create a drive group.



    My second question: Is a RAID Array the same thing as a Drive Group, in MegaRAID ?
    I am assuming they are the same thing.



    What I actually want to achieve is to create a RAID Array , and in that array more than one virtual volumes.










    share|improve this question
























      2












      2








      2








      In the MegaRAID SAS Software User Guide it is stated that a Drive Group includes one or more virtual drives. An excerpt from the document is:



      "A virtual drive is a partition in a drive group that is made up of contiguous data segments on the drives. A virtual drive can consist of these components:



      • an entire drive group

      • more than one entire drive group

      • a part of a drive group

      • parts of more than one drive group

      • a combination of any two of these conditions."

      My first question is the following: How can I create a drive group and inside that group have more than one virtual drive ?



      In the User Guide there is just one relevant command, regarding drive groups. The guide says that this command creates a new drive group:



      MegaCli –CfgLDAdd -RX[E0:S0,E1:S1,...] [WT | WB] [NORA | RA] [Direct |
      Cached] [CachedBadBBU|NoCachedBadBBU] [-szXXX [-szYYY ...]] [-strpszM]
      [-Hsp[E0:S0,...]] [-AfterLdX] | -Force [FDE|CtrlBased] [-Cache] [-enblPI
      -val] -aN


      In my opinion, running this command does not create a drive group.



      My second question: Is a RAID Array the same thing as a Drive Group, in MegaRAID ?
      I am assuming they are the same thing.



      What I actually want to achieve is to create a RAID Array , and in that array more than one virtual volumes.










      share|improve this question














      In the MegaRAID SAS Software User Guide it is stated that a Drive Group includes one or more virtual drives. An excerpt from the document is:



      "A virtual drive is a partition in a drive group that is made up of contiguous data segments on the drives. A virtual drive can consist of these components:



      • an entire drive group

      • more than one entire drive group

      • a part of a drive group

      • parts of more than one drive group

      • a combination of any two of these conditions."

      My first question is the following: How can I create a drive group and inside that group have more than one virtual drive ?



      In the User Guide there is just one relevant command, regarding drive groups. The guide says that this command creates a new drive group:



      MegaCli –CfgLDAdd -RX[E0:S0,E1:S1,...] [WT | WB] [NORA | RA] [Direct |
      Cached] [CachedBadBBU|NoCachedBadBBU] [-szXXX [-szYYY ...]] [-strpszM]
      [-Hsp[E0:S0,...]] [-AfterLdX] | -Force [FDE|CtrlBased] [-Cache] [-enblPI
      -val] -aN


      In my opinion, running this command does not create a drive group.



      My second question: Is a RAID Array the same thing as a Drive Group, in MegaRAID ?
      I am assuming they are the same thing.



      What I actually want to achieve is to create a RAID Array , and in that array more than one virtual volumes.







      megaraid megacli






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Dec 8 '13 at 0:42









      liviurliviur

      112




      112




















          1 Answer
          1






          active

          oldest

          votes


















          0














          Drive group is essentially idea/concept. For instance, if you create RAID 1. You have two drives that make up this RAID 1. Two drives are Drive group. On those two drives you can have one or more virtual drives. Virtual drive can be considered as partition on this RAID 1 array / Drive group. If you want single virtual drive with maximum size (size of drive in drive group) you would do something like




          megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -a0




          however if you want to split your Drive Group in two virtual drives you can do it like this




          megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0



          megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0




          These commands would create RAID 1 of drives in Enclosure 252, slot 0 and 1 with
          writeback enabled, readahead enabled, direct I/O cache policy, still use controller cache if battery goes bad (possibly trouble) and size (-sz500GB) as option if you want to use less than maximum space and have multiple virtual drives in drive group






          share|improve this answer























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            1 Answer
            1






            active

            oldest

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            active

            oldest

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            active

            oldest

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            0














            Drive group is essentially idea/concept. For instance, if you create RAID 1. You have two drives that make up this RAID 1. Two drives are Drive group. On those two drives you can have one or more virtual drives. Virtual drive can be considered as partition on this RAID 1 array / Drive group. If you want single virtual drive with maximum size (size of drive in drive group) you would do something like




            megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -a0




            however if you want to split your Drive Group in two virtual drives you can do it like this




            megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0



            megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0




            These commands would create RAID 1 of drives in Enclosure 252, slot 0 and 1 with
            writeback enabled, readahead enabled, direct I/O cache policy, still use controller cache if battery goes bad (possibly trouble) and size (-sz500GB) as option if you want to use less than maximum space and have multiple virtual drives in drive group






            share|improve this answer



























              0














              Drive group is essentially idea/concept. For instance, if you create RAID 1. You have two drives that make up this RAID 1. Two drives are Drive group. On those two drives you can have one or more virtual drives. Virtual drive can be considered as partition on this RAID 1 array / Drive group. If you want single virtual drive with maximum size (size of drive in drive group) you would do something like




              megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -a0




              however if you want to split your Drive Group in two virtual drives you can do it like this




              megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0



              megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0




              These commands would create RAID 1 of drives in Enclosure 252, slot 0 and 1 with
              writeback enabled, readahead enabled, direct I/O cache policy, still use controller cache if battery goes bad (possibly trouble) and size (-sz500GB) as option if you want to use less than maximum space and have multiple virtual drives in drive group






              share|improve this answer

























                0












                0








                0







                Drive group is essentially idea/concept. For instance, if you create RAID 1. You have two drives that make up this RAID 1. Two drives are Drive group. On those two drives you can have one or more virtual drives. Virtual drive can be considered as partition on this RAID 1 array / Drive group. If you want single virtual drive with maximum size (size of drive in drive group) you would do something like




                megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -a0




                however if you want to split your Drive Group in two virtual drives you can do it like this




                megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0



                megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0




                These commands would create RAID 1 of drives in Enclosure 252, slot 0 and 1 with
                writeback enabled, readahead enabled, direct I/O cache policy, still use controller cache if battery goes bad (possibly trouble) and size (-sz500GB) as option if you want to use less than maximum space and have multiple virtual drives in drive group






                share|improve this answer













                Drive group is essentially idea/concept. For instance, if you create RAID 1. You have two drives that make up this RAID 1. Two drives are Drive group. On those two drives you can have one or more virtual drives. Virtual drive can be considered as partition on this RAID 1 array / Drive group. If you want single virtual drive with maximum size (size of drive in drive group) you would do something like




                megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -a0




                however if you want to split your Drive Group in two virtual drives you can do it like this




                megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0



                megacli -CfgLdAdd -r1 [252:0,252:1] WB RA Direct CachedBadBBU -sz500GB -a0




                These commands would create RAID 1 of drives in Enclosure 252, slot 0 and 1 with
                writeback enabled, readahead enabled, direct I/O cache policy, still use controller cache if battery goes bad (possibly trouble) and size (-sz500GB) as option if you want to use less than maximum space and have multiple virtual drives in drive group







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 10 '14 at 13:06









                Hrvoje ŠpoljarHrvoje Špoljar

                4,5201839




                4,5201839



























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