User Manual - A3661-90001

Creating Logical Disk Units (LUNs) 4-21
Grid Manager
Logical Unit Number (LUN)
7KHGHIDXOWORJLFDOXQLWQXPEHU/81LVWKHQH[WKH[DGHFLPDOQXPEHUDYDLODEOHVWDUWLQJZLWK
7KHILUVW/81ERXQGUHJDUGOHVVRIWKHQXPEHURI63VRUKRVWVDWWDFKHGWRWKLVGLVNDUUD\KDV
WKHGHIDXOWQXPEHUWKHVHFRQGWKHWKLUGDQGVRRQ,WLVSRVVLEOHWRVSHFLI\DQRQGHIDXOW
QXPEHUKH[DGHFLPDO)RUWKHQH[W/81ERXQGWKHGHIDXOWQXPEHULVWKHORZHVWQXPEHUQRWLQ
XVH
:KHQELQGLQJDJOREDOKRWVSDUHWKH/81QXPEHUDVVLJQHGLVXVHGRQO\ZKLOHWKHJOREDOKRW
VSDUHLVRQVWDQGE\:KHQWKHJOREDOKRWVSDUHLVLQWHJUDWHGLQWRDGLVNJURXSLWWDNHVWKDW
JURXSV/81QXPEHU:KHQLWUHWXUQVWRJOREDOKRWVSDUHVWDWXVLWUHJDLQVLWVRULJLQDO/81
QXPEHU
2QO\/81VQXPEHUHGWKURXJKVKRXOGEHERXQGEHFDXVH6&6,VSHFLILHVRQO\WKUHHELWVIRU
WKH/81ILHOG7KLVOLPLWVWKHQXPEHURI/81VWRHLJKWZLWKYDOLGYDOXHVRIWKURXJK
Note The operating system recognizes LUNs 0 through 7 only.
Maximum Rebuild Time
7KHPD[LPXPUHEXLOGWLPHVSHFLILHVWKHPD[LPXPQXPEHURIKRXUVWKHGLVNDUUD\FDQWDNHWR
LQWHJUDWHDJOREDOKRWVSDUHRUQHZGLVNPRGXOHLQVHUWHGWRUHSODFHDGHIHFWLYHRQHLQWRWKH
JURXS7KHIRXUKRXUGHIDXOWYDOXHLVUHFRPPHQGHG6HOHFWLQJORZHUUHEXLOGWLPHVLPSDFWV
V\VWHPSHUIRUPDQFH7KHUHEXLOGWLPHFDQEHFKDQJHGZLWK*ULG0DQDJHUODWHUZLWKRXW
GDPDJLQJWKHLQIRUPDWLRQVWRUHGRQWKH/81+RZHYHUFKDQJLQJWKHUHEXLOGWLPHGXULQJD
UHEXLOGGRHVQRWVSHHGXSWKHUHEXLOGDQGGRHVQRWWDNHDIIHFWXQWLOWKHFXUUHQWUHEXLOGKDV
FRPSOHWHG
Sectors per Stripe Element
7KHQXPEHURIVHFWRUVSHUVWULSHHOHPHQWVSHFLILHVWKHVWULSHVL]HLQE\WHGLVNVHFWRUVRQ
HDFKGLVNLQWKH5$,'JURXS7KHVWULSHHOHPHQWVL]HVSHFLILHGKHUHEHFRPHVDQLQWHJUDOSDUWRI
WKH/81,WFDQQRWEHFKDQJHGZLWKRXWXQELQGLQJWKH/81ZKLFKGHVWUR\VDOOGDWDRQLW
Enable Caches (LUN Cache)
/81FDFKLQJZRUNVRQO\LIGLVNDUUD\FDFKLQJLVHQDEOHG
7KUHHRSWLRQVDUHDYDLODEOHIRU/81FDFKLQJ