Disk Array FC60 User's Guide (A5277A)
297
Glossary
35203URJUDPPDEOH5HDG2QO\0HPRU\
63UHVLGHQWERRWFRGHWKDWORDGVWKH63PLFURFRGHIURPRQHRIWKHGLVNDUUD\ªV
GDWDEDVHGULYHVZKHQWKHGLVNDUUD\LVSRZHUHGXSRUZKHQDQ63LVHQDEOHG
5$,'
$QDFURQ\PIRU§5HGXQGDQW$UUD\RI,QGHSHQGHQW'LVNV¨5$,'ZDVGHYHORSHGWR
SURYLGHGDWDUHGXQGDQF\XVLQJLQGHSHQGHQWGLVNGULYHV5$,'LVHVVHQWLDOO\DPHWKRG
IRUFRQILJXULQJPXOWLSOHGLVNVLQWRDORJLFDOHQWLW\/81WKDWDSSHDUVWRWKHKRVWV\VWHP
DVDVLQJOHFRQWLJXRXVGLVNGULYH5$,'XVHVIHDWXUHVVXFKGDWDVWULSLQJGLVNPLUURULQJ
DQGSDULW\WRLPSOHPHQWGDWDUHGXQGDQF\7KH5$,'OHYHOVVXSSRUWHGE\WKHGLVNDUUD\
LQFOXGH5$,'5$,'DQG5$,'
5$,'
$5$,'OHYHOWKDWSURYLGHVLPSURYHGSHUIRUPDQFHWKURXJKWKHXVHRIGDWDVWULSLQJEXW
GRHVQRWSURYLGHDQ\GDWDUHGXQGDQF\5$,'VKRXOGRQO\EHXVHGIRUQRQFULWFDOGDWD
VWRUDJH
5$,'
$5$,'OHYHOLQZKLFKWKH/81XVHVDVLQJOHPLUURUHGSDLURIGLVNV2QHGLVNVHUYHVDV
WKHGDWDGLVNDQGWKHRWKHUVHUYHVDVWKHPLUURUGLVN
5$,'
$5$,'FRQILJXUDWLRQLQZKLFKWKH/81XVHVERWKPLUURULQJIRUUHGXQGDQF\DQGGLVN
VWULSLQJIRUSHUIRUPDQFH+DOIWKHGLVNVVHUYHDVWKHGDWDGLVNVDQGKDOIVHUYHDVWKH
PLUURUGLVNV8SWRGLVNVFDQEHLQFOXGHGLQD5$,'/81
5$,'
$5$,'FRQILJXUDWLRQLQZKLFKWKH/81XVHVGDWDSDULW\WRIRUUHGXQGDQF\DQGGLVN
VWULSLQJIRUSHUIRUPDQFH5$,'LVHIILFLHQWLQLWVXVHRIGLVNVSDFHEXWVXIIHUVD
SHUIRUPDQFHSHQDOW\ZKHQSHUIRUPLQJZULWH,2V8SWRVL[GLVNVRQHSHUHQFORVXUH
FDQEHXVHGLQD5$,'/81
UHEXLOG
7KHSURFHVVRIUHFRQVWUXFWLQJWKHGDWDWKDWZDVRQDIDLOHGGLVNRQWRDQRWKHUGLVN
W\SLFDOO\DJOREDOKRWVSDUH7KHGLVNDUUD\UHFRQVWUXFWVWKHGDWDXVLQJPLUURUHGGDWDRU