Communication control apparatus and method
AssigneeFujitsu Limited
InventorsKeisuke YAMASAKI, Katsuya Niigata
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Abstract
A communication control apparatus in a RAID device including redundant communication paths to storage devices includes a blocking unit. The blocking unit blocks configuration change notifications outputted from the storage devices to a control apparatus, which controls access to the storage devices, when a power of a communication relay device arranged on the redundant paths connecting the storage devices and the control apparatus is turned off.
Claims20
A communication control apparatus in a RAID device including redundant communication paths to storage devices, the apparatus comprising:
- a blocking unit that blocks configuration change notifications outputted from the storage devices to a control apparatus, which controls access to the storage devices, when a power of a communication relay device arranged on the redundant paths connecting the storage devices and the control apparatus is turned off.
A storage system including storage devices that store data and a control apparatus that controls access to the storage devices, the storage system comprising:
- a communication relay device and a communication control apparatus arranged on redundant communication paths connecting the storage devices and the control apparatus, and
- the communication control apparatus including:
- a blocking unit that blocks configuration change notifications outputted from the storage devices to the control apparatus when a power of the communication relay device arranged on the redundant paths is turned off.
A communication control method of a communication control apparatus, the method comprising:
- acquiring configuration change notifications outputted from storage devices to a control apparatus, which controls access to the storage devices, when a power of a communication relay device arranged on redundant paths connecting the storage devices and the control apparatus is turned off in a RAID device including the redundant communication paths to the storage devices;
- and
- blocking to transfer the configuration change notifications acquired in the acquisition operation to the control apparatus.
A communication control method, comprising:
- determining that a command received is a change of configuration notification based on analysis of the command;
- and
- selectively blocking the notification when detecting that a power relative to redundant paths is off.
Dependencies are inferred from the claim text.