From
the database notes, the I/O requests are sent to the cell nodes. These requests
go through the intelligent iDB protocol containing information pieces like
database name, category name, consumer group etc. These I/O requests are placed
in the CELLsrv I/O queues in the order they are received. Then these I/O
requests are passed to the IORM, which prioritize these requests on the basis
of IORM plan and then places them accordingly into the Cell disk queues.