| 摘要 |
Commands can be issued by being flexibly adjusted to each of an in-band method and an out-of-band method. A disk controller includes: a pseudo-logical volume provided independently from a substantial logical volume; a command analyzer for analyzing a command received by means of communication on the in-band method or the out-of-band method; and a special command processing unit for executing operation over the substantial logical volume which corresponds to the pseudo-logical volume, instead of executing operation over the pseudo-logical volume, if the command means an instruction to operate the pseudo-logical volume.
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