Chapter 6.7. Remapping managed MDisks

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92 SAN Volume Controller: Best Practices and Performance Guidelines Figure 6- 2 Logical Drive Properties for the DS4000 6.7 Remapping managed MDisks You generally do not unmap managed MDisks from the SVC, because it causes the MDG to go offline. However, if this has been done for some reason, it is important to know that the LUN will need to present the same UID to the SVC after it has been mapped back. If the LUN is mapped back with a different UID, the SVC will recognize this as a new MDisk and the associated MDG will not come back online. This is a consideration for storage controllers that support LUN selection, because selecting a different LUN ID will change the UID. If the LUN has been mapped ...

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