Proxmox is a good solution for single servers infrastructure, you can use a single server where you can house all customer virtual machines. Recently one customer talked us about small problems with a legacy software, He has problems storing data, we make a check and index rebuilt in his database and everything start to work well.
But a couple a weeks after database rebuilt we received an backup reporting errors in Proxmox backups like this
|100||XXXXX||FAILED||00:02:14||job failed with err -5 – Input/output error|
|101||XXXXX||FAILED||00:29:00||job failed with err -5 – Input/output error|
We checked everything and discover that our server main hard disk was failing (only 6 months working ). We solved this replacing hard disk and restoring the last backups