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Table 3-12 Host Pair Status Reporting for URz/SIz Shared Volumes
Number of
URz pairs
Number of SIz
Pair status reported by USP V
0 | 0 | Simplex |
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0 | 1 | SIz pair status |
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0 | 2 or more | SIz pair status for the pair whose |
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1 | 0 | URz pair status |
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1 | 1 | URz pair status |
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1 | 2 or more | URz pair status |
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Table 3-13 Data Currency of a Shared URz/SIz Volume
SIz pair status
URz pair | Pending | Duplex | Split- | Split | Resync | Suspende |
status | Duplex |
| Pending |
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| d |
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Pending | Not current | Not current | Not current | CURRENT | Not current | Not |
Duplex |
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| current |
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Duplex | Not current | Not current | Not current | CURRENT | Not current | Not |
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| current |
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Suspended | Not current | CURRENT | CURRENT | CURRENT | CURRENT | Not |
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| current |
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Figure 3-8 through Figure 3-11 show the various URz/SIz configurations which share volumes.
•URz/SIz configurations which share the URz primary data volume and SIz S-VOL
Figure 3-8 shows an example of a URz primary data volume which is also functioning as a SIz S-VOL. This configuration allows you to use SIz for on- site data backup in case of a URz failure, and to use URz to provide remote backup of the SIz S-VOL in case of a SIz failure.
|
| URz |
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Primary | Master journal |
| Restore journal |
volume |
| volume | |
data |
| ||
volume |
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SIz | Secondary | RCU | |
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| data volume |
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MCU
Figure 3-8 Shared URz primary data volume and SIz S-VOL
Chapter 3 Preparing for Universal Replicator z/OS Operations |