MD Disk Tool (MDDT), a MS-DOS tool which allows the user to access the files on a storage device through a SCSI interface. PC with communication program.Ĥ References In these operational directions references are made to the following documents: It is connected directly to the NIU board.Ħ.1 General 6.2 Making safety backup 6.3 Using safety backup for system recovery 7įile://D:\Alex\Alex_tmp\ALEX_TMP\1002\alex0490.htmģ Aids I/O terminal. The LIM resident storage device is different from the one that is used to store the system backup. or a non-LIM resident storage device, a PC that is connected to the NIU board via a network connection. The user can have a safety backup stored on a storage device that is either:Ī LIM resident storage device. This second backup is called safety backup and it can be used to recreate the system backup or for system recovery. However, there is a possibility that the system backup storage device can crash and in that event the system cannot be easily restored unless another data backup is available. OPERATIONAL DIRECTIONS9/154 31-AND 102 02 Uen Cġ General When an exchange is in operation a system backup should be made to protect the investment that has been put into the system data.