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What is the maximum LUN size vxvm can recognize

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  #1  
Old 01-06-2011
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What is the maximum LUN size vxvm can recognize
  

The Veritas Volume Manager, VVM otherwise VxVM is a proprietary reasonable volume manager from Veritas (currently fraction of Symantec). It is obtainable for Windows, AIX, Solaris, Linux, as well as HP-UX. A customized edition is packed through HP-UX as its integrated volume manager. It provides volume management along with Multipath I/O functionalities. Now the question is, does anybody know what is maximum LUN size vxvm can recognize?
  • Software edition: Storage Foundation 5.0 MP3
  • Platform: AIX 5.3

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  #2  
Old 01-06-2011
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re: What is the maximum LUN size vxvm can recognize

The maximim lun mass intended for VXVM depends ahead the kind of disk-format initialization technique by utilizing which we would like to initialize the storage space Lun [ previously obtainable within OS] into VXVM. There are 2 kind of DISK inside VXVM control.
  • CDS disk [Cross data structure ]
  • Sliced disk
If you make use of cdsdisk like the format, we can initialize a disk maximum of 2TB size and if we utilize on top of 1TB we have got to employ sliced format. The Maximum initialization size is based on VXVM edition as well.
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Old 01-06-2011
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re: What is the maximum LUN size vxvm can recognize

I am slight doubtful on the recognized information concerning maximum lun size vxvm can distinguish. On the other hand the largest size like a single disk which you can utilize within vxvm depends on the format of disk you choose. To my information, if you utilize cdsdisk the same as the format, intended for 5.0MP3 you can initialize a disk maximum of 1TB amount. Higher than 1TB will be permitted if you utilize sliced format. In 5.1 SP1 beyond, cdsdisk can distinguish nearly 2TB..
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Old 01-06-2011
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re: What is the maximum LUN size vxvm can recognize

For VxVM editions before 5.1SP1, the CDS (Cross-Platform Data Sharing) execution is depends on the Solaris sparc VTOC (furthermore referred to like the Volume Table of stuffing) disk labeling system and the Solaris VTOC disk label doesn?t hold up physical disks bigger than one terabyte. CDS disk label shows the information of disk geometry (the disk geometry contains numeral of cylinders, heads, sectors as well as mass of the sector, whose creation offers the disk capability). The disk geometry and capability can moreover be got in the course of SCSI mode sense commands and generally, values got viah these 2 methods must match.
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  #5  
Old 01-06-2011
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re: What is the maximum LUN size vxvm can recognize

VxVM disk public section is single-minded from raw geometry in elder edition of VxVM releases. Raw geometry does not situate whichever restrictions on disk size and therefore VxVM disk public section can go beyond above 1 terabyte size meant for CDS disk of size more than 1 terabyte. Upgrade VxVM edition toward VxVM 5.1SP1RP1 and later on, which holds up disk size in excess of 1 terabyte across platforms through EFI-GPT label . VxVM 5.1SP1RP1 furthermore permits CDS relocation to additional UNIX platforms.
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  #6  
Old 02-06-2011
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re: What is the maximum LUN size vxvm can recognize

On AIX, along with LINUX, for disks above 1 terabyte, if disk capability which is considered on the basis of raw geometry (geometry composed from SCSI modesense) doesn?t contest by the disk capability which is computed on the basis of disk?s label in that case there is a option that VxVM CDS disk size would be beyond the size described from disk?s label. VxVM CDS disk?s support labels will be printed on the final track of very last cylinder, which is premeditated based on the main CDS disk label exist in block 0.
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