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Autoextend querys
How does auto extend works? I have 500GB file system which is configured to extend when the usage reaches 80%. When the file system reaches 80% what is the extended size and what is the maximum size it extends to? Also I have the source partion configured with auto extend which is replicated to remote device. Do I need to set auto extend on remote file system as well?
dan-pncbank
9 Posts
1436
0
Posted September 28th, 2021 08:00
if you are setting auto-extend and you specify the max size to 10tb while you are current file system size is at 91%. the threshold is at 90% and it says max size is reached. Does that mean it has reached the max size of 10tb to extend and will not extend anymore?
DELL-Josh Cr
Community Manager
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9734 Posts
•
44224 Points
1432
0
Posted September 28th, 2021 09:00
Hi Dan,
It sounds like it reached the max size. It depends on which model you have but the max can be anywhere from 8-16TB. https://dell.to/2Zv353u Let us know if you have any additional questions.
Rainer_EMC
6 Operator
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8645 Posts
1709
1
Posted February 14th, 2009 04:00
auto-exend is detailed in the Implementing Automatic Volume Management with Celerra manual:
With Automatic File System Extension enabled, a file system that is smaller than 10
GB extends by its size when it hits the high water mark. For example, a 3 GB file
system, after reaching its high water mark, automatically extends to 6 GB.
When a file system larger than 10 GB hits its high water mark, Automatic File
System Extension grows the file system by 5 percent of the file system size or 10
GB, whichever is larger. For example, a 100 GB file system extends to 110 GB, and
a 500 GB file system extends to 525 GB.
Automatic File System Extension guarantees that your file system usage is at least
3 percent below the high water mark. For example, a 100 GB file system hits its 80
percent high water mark at 80 GB. The file system automatically extends to 110
GB. The file system is now at 72.72 percent usage (80 GB), well below the 80
percent high water mark for the 110 GB file system.
Enable automatic extension and virtual provisioning on the source file system only.
The destination file system is synchronized with the source and extends automatically.
When the source file system hits its high water mark, the destination file system
automatically extends first. Then the source file system automatically extends. Set
up the source replication file system with automatic extension enabled, as
explained in "Creating file systems with Automatic File System Extension" on
page 44, or modify an existing source file system to automatically extend using the
procedure "Enabling Automatic File System Extension and options" on page 56.
If the extension of the destination file system succeeds and the extension of the
source file system fails, the automatic extension process stops functioning. You
receive an error message indicating the failure is due to the limitation of available
disk space on the source side.