Network system, method of controlling access to storage device, administration server, storage device, log-in control method, network boot system, and method of accessing individual storage unit

摘要

A network boot system including one or more client terminals, a DHCP (Dynamic Host Configuration Protocol) server, a PXE (Preboot Execution Environment) server, a TFTP (Trivial File Transfer Protocol) server, a database administration server, one or more storage devices, and an authentification server (such as a Radius server) connected to each other via a TCP/IP (Transmission Control Protocol)/Internet Protocol) network. A plurality of LU provided in the storage devices as separated into a system area LU and a user area LU prepared per user.

主权项

1. A network boot system comprising:
a plurality of client terminals and the network boot system comprises a plurality of storage units separated into a system area and a user area in storage devices for each user; at least one storage device including a plurality of storage units, which includes a master storage unit; and a network to connect the plurality of client terminals, and the storage device to each other, wherein the storage device creates a plurality of replica storage units by copying the master storage unit, and the plurality of client terminals load data required for operation from the same one or different ones of the plurality of replica storage units: said system area storage unit includes the master storage unit and at least one of the replica storage units wherein when the master storage unit is updated and stored in the at least one storage device, the storage device copies the updated master storage unit to update the replica storage units, and the plurality of client terminals do not load the data required for operation from the master storage unit after the master storage unit is updated and stored in the at least one storage device so as to reduce a maintenance cost for storage units in a storage device by performing maintenance only to the master storage unit.