这种内存用于数据库级的任务，例如备份/恢复、锁定和 SQL 的执行。

This memory is used by database level tasks such as backup/restore, locking, and SQL executions.

youdao

每个额外节点都需要额外的内存来保存集群中每个节点的备份，所以很快就会用光内存。

Each extra session requires extra memory for its backups on every node in the cluster, so you quickly run out of memory.

youdao

全文检索编目不能与其他的数据库一起备份，而且两个服务不能轻松的共享内存和CPU资源。

Full Text Search catalogs are not backed up with the rest of a database and the two services cannot easily share memory and CPU resources.

youdao