There are three processes will be running on the cell stoarge servers.
cellsrv - Cell Server
It is mutlithreaded process.
The primary storage software component. Responsible for disk I/O with the use of iDB protocol*.
It communicates with Oracle Database to serve simple block requests like database buffer cache reads and Smart Scans with projections and filters.
CELLSRV also implements IORM and collect statistics on its operation.
MS - Management Server
The Management Server process acts like an coordinator between command line interface and cell storage.
MS - Management Server
The Management Server process acts like an coordinator between command line interface and cell storage.
It provide the interface of storage for configuration and administration purpose.
It communicates with cellsrv process in providing the required information to the cellcli commands that are being executed.
It is also responsible to send alerts and collect statistics.
RS - Restart Server
Restart service will monitor the cellsrv and MS processes.
RS - Restart Server
Restart service will monitor the cellsrv and MS processes.
It restarts them if necessary.
* iDB protocol is an intelligent DataBase protocol which is the heart of the Exadata. It is used to do communication between Database node and cell storage. It transfers data between cell storage and Database Node. Also it's provides interconnection bandwidth aggregation and failover.
* iDB protocol is an intelligent DataBase protocol which is the heart of the Exadata. It is used to do communication between Database node and cell storage. It transfers data between cell storage and Database Node. Also it's provides interconnection bandwidth aggregation and failover.
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