Patent ID: 7337283
Filing Date: 2008-02-26
Classification: G06F

Abstract:
1. A method of managing storage reservation, comprising: inputting a reservation for use of a storage from a user; judging whether it is possible to reserve a volume and a port of the storage according to the input; when it is judged, in the judging step, to be possible to reserve the volume and the port, recording a reservation for the volume and the port in a recording unit, and when it is judged, in the judging step, to be impossible to reserve the volume, adjusting the volume judged impossible to reserve, and then judging whether it is possible to reserve the adjusted volume; wherein when levels of performance and reliability are designated by the user, a volume and a port satisfying the designated performance and reliability are retrieved, and the retrieved volume and port are reserved; the volume and the port retrieved according to the levels of performance and reliability are set to levels equal to or higher than the designated levels of performance and reliability, whereby it is possible to use a volume and a port of levels equal to or higher than the designated levels when a storage has an allowance; and when a reservation is received anew and a volume and a port satisfying the designated levels of performance and reliability for the new reservation cannot be detected, it is judged whether it is possible to allocate a prior reservation, which has already been made at levels higher than the designated levels, to another volume and another port within a range of the designated levels and, if it is possible to allocate the prior reservation, changes the prior reservation to the another volume and the another port, and adjusts the volume such that the volume and port previously reserved for the prior reservation can be used for the new reservation.