tailieunhanh - essential system administration 3rd edition phần 7

Những mục tiếp theo chỉ định thông tin về các ổ đĩa băng và các phương tiện truyền thông sử dụng:Kịch bản để thay đổi băng tiếp theo (cung cấp). Số lượng tối đa băng mỗi lần định tapetype DLT {bình luận "DLT 10 GB băng" chiều dài | These next entries specify information about the tape drive and media to use number of tapes in use tapecycle 25 labelstr Daily 0-9 0-9 Set to at least tapes required for one full cycle plus a few spares default 15 . Format of the table labels regular expression . tapedev dev rmt 0 tapetype DLT changerdev dev whatever tpchanger script-path runtapes 4 Script to change to next tape supplied . Maximum number of tapes per run. The first two entries specify the number of tapes in use and the pattern used by their electronic labels. Note that tapes must be prepared with amlabel prior to use discussed below . The next two entries specify the location of the tape drive and its type. The final three entries are used with tape changers and are commented out in this example. Only one of tapedev and tpchanger must be used. Tape types are defined elsewhere in the configuration file with stanzas like this define tapetype DLT comment DLT with 10 GB tapes length 12500 mb Tape capacity takes compression into account . speed 1536 kps Drive speed. lbl-templ file PostScript template file for printed labels. The example configuration file includes many defined tape types. The length and speed parameters are used only for estimation purposes . how many tapes will be required . When performing the actual data transfer to tape Amanda will keep writing until it encounters an end-of-tape mark. The following entry and holdingdisk stanza defines a disk holding area When media is unavailable save this of holding space for degraded-mode incremental backups. reserve 50 Default is 100 . holdingdisk amhold0 Name is amhold0. comment Primary holding disk directory scratch amanda amount of space to use or save - 0 use all default use -2 Gb Always leave this much space. More than one holding disk may be defined. The final task to be done in the configuration file is to define various dump types generalized backup actions having specific characteristics but independent of the data to be backed up .