Cloud Spanner

• This is fully managed relational database with unlimited scale and strong consistency and up to 99.999%
• Creating a cloud spanner instance
• Refer Here for the java sample
• Refer Here for the python sample

Firestore

• This is a fully managed NoSQL document database
• This is very popular with mobile clients Refer Here

Network File System (NFS) as a Service Google File Store

• Basic NFS
• Create a Google file store instance
• Now lets create a ubuntu instance in default vpc
• Refer Here to understand linux mounts