max. DB side percona 8.0.19 can support

MySQL & MariaDB Percona XtraDB Cluster 8.x
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1

hi,
any idea on what is the max. size of DB percona PXC 8.0.19 can handle ?

2

No limit. You are only limited by your filesystem and network speeds.

3

Not even a limit over terabytes ?

e.g. MS SQL server:

Maximum capacity specifications for SQL Server - SQL Server

Database size: 524,272 terabytes

4

MySQL has no limit on the number of databases. The underlying file system may have a limit on the number of directories.

MySQL has no limit on the number of tables. The underlying file system may have a limit on the number of files that represent tables. Individual storage engines may impose engine-specific constraints. InnoDB permits up to 4 billion tables.

The effective maximum table size for MySQL databases is usually determined by operating system constraints on file sizes, not by MySQL internal limits.

https://dev.mysql.com/doc/mysql-reslimits-excerpt/8.0/en/table-size-limit.html