B-4 Other PrecautionsCD/DVD DiscsKeep the following notes in mind to use the disc for the server: Press the center of the storage case to remove the disc from the case. Do not drop the disc. Do not place anything on the disc or bend the disc. Do not attach any label onto the disc. Do not touch the signal side (nothing is printed on this side) with your hand. Place the disc with its printed side upward and gently put it on the tray. Do not scratch the disc or write anything directly on it with a pencil or ball-point pen. Do not leave the disc with foods and drinks, or in a place exposed to cigarette smoke. Do not leave the disc in a high-temperature place (e.g., place exposed to direct sunlight orclose to a heater). When dust or fingerprints are attached on the disc, wipe the disc from its center to edgewith a dry soft cloth slowly and gently. Use the disc cleaner to clean the disc. Do not use record spray/cleaner, benzene, orthinner. Keep the disc in a disc case when not in use.Tape MediaThe following describes data handling with the DAT, DLT, or AIT optionally available for theserver. Saving your valuable dataWhen you save your valuable data or programs into the cartridge tape, you should savethem into two cartridge tapes to make the primary and secondary tapes.This enables you to restore your data from one tape when the other makes a read error, aswell as to protect your valuable data and programs from loss. Three-generation data managementNEC recommends that you should employ three-generation data management for datastorage.Three-generation data management uses three cartridge tapes: A, B, and C. You save datato tape A on the first day, tape B on the second day, tape C on the third day, tape A on theforth day, and so on. That is, you save data into cartridge tapes cyclically from tape Athrough C.This enables you, for example, to use tape B to restore the data when tape C makes a readerror. Also when both tapes B and C make a read error, you can restore your valuable databy using the data stored in tape A.
