User Manual - A3661-90001

1-32 RAID General Information
RAID-5 Group (Individual Access Array)
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ILYHGLVNPRGXOHVEXWFDQFRQVLVWRIIURPWKUHHWRPRGXOHV/LNH5$,'WKLVW\SHRI5$,'
JURXSXVHVGLVNVWULSLQJDQGSDULW\EXWQRWKDUGZDUHPLUURULQJ5$,'LVVLPLODUWR5$,'H[FHSW
WKDWLWGRHVQRWXVHDGHGLFDWHGSDULW\GLVN,QD5$,'JURXSWKHKDUGZDUHUHDGVDQGZULWHVSDULW\
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WKH5$,'JURXSPXVWEHRQGLIIHUHQWLQWHUQDO6(6&6,EXVHV
,IDGLVNPRGXOHIDLOVRUEHFRPHVLQDFFHVVLEOHGXHWRDQLQWHUQDO6(6&6,EXVIDLOXUHWKH63FDQ
G\QDPLFDOO\UHFRQVWUXFWDOOXVHUGDWDDQGSDULW\LQIRUPDWLRQIURPWKHXVHUGDWDDQGSDULW\
LQIRUPDWLRQRQWKHUHPDLQLQJGLVNPRGXOHV:KHQWKHIDLOHGGLVNPRGXOHLVUHSODFHGRUWKH6&6,
EXVLVUHVHWWKH63DXWRPDWLFDOO\UHEXLOGVWKHGLVNLPDJHXVLQJWKHLQIRUPDWLRQVWRUHGRQWKH
UHPDLQLQJPRGXOHV7KHUHEXLOW/81FRQWDLQVDUHSOLFDRIWKHLQIRUPDWLRQLWZRXOGKDYHFRQWDLQHG
KDGWKHGLVNPRGXOHQRWIDLOHG
,IDGLVNPRGXOHIDLOVSHUIRUPDQFHGHJUDGHVXQWLOWKHGHIHFWLYHGLVNPRGXOHLVUHSODFHGDQGWKH63
UHEXLOGVWKHGDWDDQGSDULW\RQLW'XULQJWKLVWLPHKRZHYHUWKHGLVNDUUD\FRQWLQXHVWRIXQFWLRQ
DQGSURYLGHDFFHVVWRDOOGDWDLQFOXGLQJGDWDVWRUHGRQWKHIDLOHGGLVNPRGXOH,IWZRRIWKHILYH
GLVNPRGXOHVLQD5$,'JURXSIDLOWKHJURXSEHFRPHVLQDFFHVVLEOH7RJXDUGDJDLQVWWKLV
PXOWLSOHJOREDOKRWVSDUHVVKRXOGEHFRQILJXUHG
)LJXUHLOOXVWUDWHVXVHUDQGSDULW\GDWDZLWKWKHGHIDXOWVWULSHHOHPHQWVL]HRIVHFWRUV
E\WHVLQDILYHPRGXOH5$,'JURXS7KHVWULSHVL]HLVWKHVWULSHHOHPHQWVL]HWLPHV
WKHQXPEHURIGLVNPRGXOHVLQWKH5$,'JURXSRUVHFWRUVE\WHV7KHGLVNEORFN
DGGUHVVHVLQWKHVWULSHSURFHHGVHTXHQWLDOO\IURPWKHILUVWPRGXOHWRWKHVHFRQGWKLUGIRXUWKDQG
ILIWKWKHQEDFNWRWKHILUVWDQGVRRQ
7KHGLVNDUUD\SHUIRUPVPRUHRSHUDWLRQVZKHQZULWLQJGDWDWRD5$,'JURXSWKDQWRDQ\RWKHU
5$,'JURXS)RUHDFKZULWHWKHGLVNDUUD\PXVWSHUIRUPWKHIROORZLQJVWHSV
 5HDGWKHH[LVWLQJXVHUGDWDIURPWKHGLVNPRGXOHV
 5HDGWKHFRUUHVSRQGLQJSDULW\LQIRUPDWLRQ
 :ULWHWKHQHZXVHUGDWD
 &DOFXODWHDQGZULWHWKHQHZSDULW\LQIRUPDWLRQ
5$,'LVJRRGIRUSDUDOOHOSURFHVVLQJPXOWLWDVNLQJDSSOLFDWLRQVDQGHQYLURQPHQWV,WKDVWKH
VDPHRYHUKHDGFRVWDV5$,'EXWSURYLGHVIDVWHUUDQGRPDFFHVVEHFDXVHSDULW\LVVSUHDGDFURVV
DOOGULYHVLQWKH5$,'JURXS+RZHYHUWKHGDWDWUDQVIHUUDWHIRU5$,'LVVRPHZKDWVORZHUWKDQ