Data Migration
Hello,
In our environment we are consolidating storage into fewer arrays replacing the older ones. As usual, we are adding a mirror to the existing file system using new array luns and removing the older ones. And the i'm not happy with the IO performance and ofcourse, nothing much can be done with that. However, I have observed some file systems usage is very less (some even less than 50%). I am thinking of shrinking the file system and then add plex to it, so that resync will be faster and later I can grow the file system. Though, I do not forsee any issues with this approach as long as file system has enough space for the applications, I would like to take suggestions from others.
Thanks in Advance.
Nagesh.
If you are using vxfs, then yes, shrinking filesystem should not be an issue & yes the approach is good for a faster plan however I see one issue here, are you strict towards the layout of volumes you are using ?
for e.g lets say your volume is mirrored vol ... now you have shrink it by 50% & then added new plex to it from new Luns, & lets say this new plex has to be mirrored again .. I am wondering about the contigous space allocation ... it shoudn't happen that you have used the contigous space & finally when you have to grow the filesystem , you land up in some restrictions to change the volume layout ..
Hope I am clear ..
G