ASM Storage Concept - ASM DiskGroup - ASM Disks - Allocation Units (AU) - ASM Files - Extend Mgmt
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- Опубликовано: 10 сен 2024
- ASM Storage Concept - ASM DiskGroup - ASM Disks - Allocation Units (AU) - ASM Files - Extend Mgmt
AU:
ASM disks are divided into allocation units
Unit of allocating storage to a file
One megabyte in size
Small enough not to be hot
Large enough for efficient sequential access
Many allocation units in a single file
ASM disk block mapping
AU = 1MB
blocksize = 4k
Note:
50 MB space reservation for 255 ASM files.
ASM File:
datafile (segments, extents - these are logical obj.)
- ASM file (asmfile extents)
- AUs on disk
EXTENT MAP: Extents per file
ALLOCATION TABLE: AUs per disk
#ASM #DiskGroup #ASMDisks #AU #ASMFiles #ASMStorageConcept #RAC #Oracle #Database #Exadata
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Excellent explanation with asm concepts mallikarjun sir. Thankyou very much
Keep watching
great job - you are very fluent in this thing, thanks.
You are welcome
Very good Explanation .
BEST EXPLANATION
great explanation
Good session sir
Thank you
thank you 4 clarification
You are welcome
good explanation sir
Thanks and welcome
just a question
what will happen suppose if there is diskgroup DEF with following disk sizes :
disk1 : 1gb
disk2 : 2gb
disk3 : 3gb
plz reply
Sir what happens if I add a 1g datafile with respect to stripping and mirroring?
Hi, your videos are nice and easily understanding. Also can you make some videos on oracle golden gate
Sure I will take some sessions on GG but not right now.
I will plan it in future days.
Kemey