U41117-J-Z125-7-76
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CentricStor - Virtual Tape Library
Optional system functions
2.9.8.4
Mirrored RAID systems
A mirrored CentricStor system has 1 to a maximum of 4 RAID mirror pairs.
Figure 23: Example of a CentricStor mirror system with 3 RAID mirror pairs
In a RAID mirror pair, one RAID system contains only primary caches, the other only
secondary caches (mirror caches):
Figure 24: Primary and secondary caches in a RAID mirror pair
Such a mirror pair is defined by the corresponding assignment of the LUNs, as shown in the
example (where x is in the range 0 through 7) below:
Assignment of the LUNs for DTV
caches (/cache/...)
1st RAID
2nd RAID
(P) x + 0
(S) x + 8
(P) x + 1
(S) x + 9
(P) x + 2
(S) x + 10
(P) x + 3
(S) x + 11
(P) x + 4
(S) x + 12
(P) x + 5
(S) x + 13
(P) x + 6
(S) x + 14
(P) x + 7
(S) x + 15
1stRAID 2ndRAID
ID 1
ID 2
RAID mirror pair 1
3rdRAID 4thRAID
ID 3
ID 4
RAID mirror pair 2
5thRAID 6thRAID
ID 5
ID 6
RAID mirror pair 3
1st RAID
RAID mirror pair
Primary
cache
2nd RAID
Secondary
cache
(P) LUN0
(P) LUN1
(P) LUN2
(P) LUN3
(P) LUN4
(P) LUN5
(P) LUN6
(P) LUN7
(S) LUN8
(S) LUN9
(S) LUN10
(S) LUN11
(S) LUN12
(S) LUN13
(S) LUN14
(S) LUN15
Example of the LUN assignments:
1st RAID
2nd RAID
P = Primary cache
S = Secondary cache
Summary of Contents for CentricStor V3.1D
Page 1: ...Edition July 2007 CentricStor V3 1D User Guide...
Page 22: ...Eine Dokuschablone von Frank Flachenecker by f f 1992...
Page 60: ...Eine Dokuschablone von Frank Flachenecker by f f 1992...
Page 236: ...Eine Dokuschablone von Frank Flachenecker by f f 1992...
Page 311: ...U41117 J Z125 7 76 311 Global Status History diagrams Example for V3 1D...
Page 321: ...U41117 J Z125 7 76 321 Global Status History diagrams 4 Open history file...
Page 322: ...322 U41117 J Z125 7 76 History diagrams Global Status 5 Confirm you wish to open it...
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Page 546: ...Eine Dokuschablone von Frank Flachenecker by f f 1992...