[Linuxha-users] Multiple apps on one server

[Michael Mansour]

Hi Simon,

I'm just wondering, if I wanted to have multiple applications managed on a 
cluster, what's requirements are there on the disk layouts?

ie. is it best to have one LV per application, or one VG per application?

I'm asking because I'm trying to understand whether having different-sized 
VG's on the primary and on the standby will have a negative impact on the 
cluster. I know it's ideal to have the same sized disks for each cluster in 
the node (therefore "mirroring" the VG and LV setups on each node), but I'm 
wondering if I have one server with mirrored 120Gb disks (for example), and 
another with mirrored 200Gb disks (for example), should I be assigning a VG on 
each to be the same size on each? ie. like 100Gb VG's for both, and making 
that 100Gb an LVapp1 (for example), then 20Gb VG's on both, and then making an 
LVapp2.

I'm trying to understand this better.

Thanks.

Michael.