Projekt: Heimserver auf HyperV Basis mit Server 2012 R2 Datacenter und Storage Spaces

Und die Lösung wie man Rollen (ausgenommen du hast schon Sachen dafür in der Registry etc. konfiguriert) wieder los wird ist sie zu deinstallieren und bei Bedarf neu zu installieren. Hatte ich aber auch schon oben geschrieben.

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Chatt schrieb:

ALLE nachträglich installierte Rollen auf einmal zurück setzen. weiß ich was ich mal installiert und konfiguriert habe?

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ReFS Real-Time Tiering
Now that we have created a multi-resilient virtual disk lets discuss how ReFS operates on this virtual disk. ReFS always writes into the mirror tier. If the write is an update to data sitting in the parity tier, then the new write still goes into the mirror tier and the old data in the parity tier is invalidated. This behavior ensures that writes are always written as a mirror operation which is the best performing, especially for random IO workloads like virtual machines and requires the least CPU resources.

The write will actually land in the Storage Bus Cache below the file system and virtual disk. The beauty of this arrangement is that there is not a fixed relation between the mirror tier and the caching devices, so if you happen to define a virtual disk with a mirror tier that is much larger than the actual working set for that virtual disk you are not wasting valuable resources.

ReFS will rotate data from the mirror tier into the parity tier in larger sequential chunks as needed and perform the erasure coding computation upon data rotation. As the data rotation occurs in larger chunks it will skip the write-back cache and be written directly to the capacity devices, which is OK since its sequential IO with a lot less impact on especially rotational disks. Also, the larger writes overwrite entire parity stripes, eliminating the need to do read-modify-write cycles that smaller writes to a parity Space would otherwise incur.

Conclusion
So they say you cannot have your cake and eat it too, however in this case you can have capacity efficacy with multi-resilient virtual disks and good performance with ReFS real-time tiering. These features are introduced in Technical Preview 4 and as we expect to continue to improve performance as we move towards Windows Server 2016.

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