They are some professionals in the storage industry who feel that storage snapshots can be treated as valid backup solutions. But in reality this assumption is false as storage snapshots can only be used to quickly recreate point-in-time virtual copies of data. Moreover, these snapshots unless copied to a secondary media, do not protect against media failures.
Factually speaking, while taking snapshots users will notice that storage space is shrinking in databases as this technology takes room to completely save the machine state. This is due to fact that as time goes by, users who have taken snapshots, forget to remove them after upgrades or patches are verified and this is where users witness a space crunch.
What we want to conclude over here is that while there are benefits of using snapshots for development or testing purposes on non-production systems, they should not be considered as valid data protection or backups of databases.