HP A3550A User Manual - A3661-90001 - Page 72
Number of, bound RAID-3, Total SIMM, memory, on each SP, SP memory, by each SP, Total RAID-3, Unused
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Table 1-4 RAID-3 Memory Recommendations Based on 6 MB per LUN Number of Total SIMM bound RAID-3 memory LUNs on each SP SP memory used by each SP Total RAID-3 Unused SIMM memory memory on each SP on each SP 1 16 MB 4 MB 6 MB 6 MB 2 16 MB 4 MB 12 MB 0 MB 3 32 MB 4 MB 18 MB 10 MB 4 32 MB 4 MB 24 MB 4 MB 5 64 MB 4 MB 30 MB 30 MB 6 64 MB 4 MB 36 MB 24 MB 1-30 RAID General Information
1-30
RAID General Information
:KHQ´D´GDWD´GLVN´LQ´WKH´5$,’¸¶´JURXS´IDLOV»´WKH´63´DXWRPDWLFDOO\´UHFRQVWUXFWV´DOO´XVHU´GDWD´IURP´WKH´
XVHU´GDWD´DQG´SDULW\´LQIRUPDWLRQ´RQ´WKH´UHPDLQLQJ´GLVN´PRGXOHVµ´,I´WKH´SDULW\´GLVN´IDLOV»´WKH´63´
UHFRQVWUXFWV´WKH´SDULW\´LQIRUPDWLRQ´IURP´WKH´XVHU´GDWD´RQ´WKH´GDWD´GLVNVµ´:KHQ´D´IDLOHG´GLVN´PRGXOH´
LV´UHSODFHG»´WKH´63´DXWRPDWLFDOO\´UHEXLOGV´WKH´5$,’´JURXS´XVLQJ´WKH´LQIRUPDWLRQ´VWRUHG´RQ´WKH´
UHPDLQLQJ´PRGXOHVµ´3HUIRUPDQFH´GHJUDGHV´ZKLOH´WKH´63´UHEXLOGV´WKH´JURXS»´EXW´WKH´GLVN´DUUD\´
FRQWLQXHV´WR´RSHUDWH´DQG´DOO´GDWD´LV´DFFHVVLEOH´GXULQJ´WKLV´WLPHµ´7KH´UHEXLOW´5$,’´JURXS´FRQWDLQV´D´
UHSOLFD´RI´WKH´LQIRUPDWLRQ´LW´ZRXOG´KDYH´FRQWDLQHG´KDG´WKH´GLVN´PRGXOH´QRW´IDLOHGµ´,I´WZR´RI´WKH´ILYH´
GLVN´PRGXOHV´LQ´D´5$,’¸¶´JURXS´IDLO»´WKH´JURXS´EHFRPHV´LQDFFHVVLEOHµ´7R´JXDUG´DJDLQVW´WKLV»´
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5$,’¸¶´JURXSV´LQ´D´+HZOHWW¸3DFNDUG´0RGHO´¶¹Ç)&´+LJK´$YDLODELOLW\´’LVN´$UUD\´GR´QRW´XVH´WKH´VDPH´
PHPRU\´VFKHPH´IRU´UHDG´DQG´ZULWH´FDFKLQJ´DV´LV´XVHG´E\´WKH´RWKHU´5$,’´JURXSVµ´,QVWHDG»´HDFK´
5$,’¸¶´JURXS´UHTXLUHV´GHGLFDWHG´63´PHPRU\´IRU´FDFKLQJµ´7KLV´PHPRU\´LV´LQ´DGGLWLRQ´WR´WKH´¾ 0%´
XVHG´E\´HDFK´63µ´$´PLQLPXP´RI´²´0%´RI´PHPRU\´SHU´5$,’¸¶´JURXS´LV´UHTXLUHG´RQ´HDFK´63µ´· 0%´RI´
PHPRU\´SHU´5$,’¸¶´JURXS´RQ´HDFK´63´LV´UHFRPPHQGHG»´EXW´PRUH´FDQ´EH´FRQILJXUHGµ´$´5$,’¸¶´
JURXS´XVHV´WKH´PHPRU\´RQ´WKH´63´WKDW´RZQV´LW»´EXW´EHFDXVH´/81´RZQHUVKLS´FDQ´WUDQVIHU´WR´WKH´
RWKHU´63»´WKH´DPRXQW´RI´PHPRU\´PXVW´EH´LGHQWLFDO´RQ´HDFK´63µ´
%HFDXVH´WKH´63´UHTXLUHV´¾ 0%´RI´PHPRU\´IRU´LWV´RZQ´XVH»´DQG´½»´±·»´¶²»´DQG´·¾ 0%´RI´6,00´PHPRU\´
FDQ´EH´LQVWDOOHG´RQ´DQ´63»´D´PLQLPXP´RI´±· 0%´RI´6,00´PHPRU\´LV´UHFRPPHQGHG´IRU´RQH´5$,’¸¶´
JURXS´Á¾ 0%´IRU´63´XVH´SOXV´· 0%´IRU´5$,’¸¶´PHPRU\´WRWDOV´±¹ 0%µ´7ZR´5$,’¸¶´JURXSV´FDQ´EH´
FRQILJXUHG´XVLQJ´WKH´VDPH´±· 0%´RI´6,00´Á¾ 0%´IRU´63´XVH´SOXV´· 0%´IRU´RQH´5$,’¸¶´JURXS´SOXV´
· 0%´IRU´WKH´VHFRQG´5$,’¸¶´JURXS´WRWDOV´±· 0%µ´7KLV´LV´LOOXVWUDWHG´LQ´7DEOH´±¸¾»´ZKLFK´DVVXPHV´WKH´
UHFRPPHQGHG´· 0%´RI´PHPRU\´IRU´HDFK´5$,’¸¶´/81µ´
Table 1-4
RAID-3 Memory Recommendations Based on 6 MB per LUN
Number of
bound RAID-3
LUNs
Total SIMM
memory
on each SP
SP memory
used
by each SP
Total RAID-3
memory
on each SP
Unused SIMM
memory
on each SP
1
16 MB
4 MB
6 MB
6 MB
2
16 MB
4 MB
12 MB
0 MB
3
32 MB
4 MB
18 MB
10 MB
4
32 MB
4 MB
24 MB
4 MB
5
64 MB
4 MB
30 MB
30 MB
6
64 MB
4 MB
36 MB
24 MB