Need to maintain the level of the fastest storage?

Hey all,.

I have a 8 Gb FC SAN with 4 shelves.  Most of the readers is 10 K readers, but I have two 15 K disks LUNS.  No SSD, unfortunately.

I read a few different ideas on what to put on the faster layer:

  • Put the Parent Clone related with the fastest component
    • It would make sense that this would help reconstruct the operations because the replica is generated based on the master, the master must therefore faster storage.
    • Is this performance helps in normal operations?  It seems that recompose would be the main square that this aid.
  • Put the Clone replicas associated with the fastest component.
    • I don't quite understand it, because I thought that each LUN must have a replica.
    • Is it really possible to have a logic unit without a line number (or a logic unit number where the replica is stored elsewhere?)
  • Redirect disposable discs at the fastest level
    • Maybe I heard wrong - wanted - they say "any other level outside the LUN clone related?
    • I see the advantage to spend disposable disks in their own logic unit number.

Thank you
Drew

Depending on your version, you can certainly have a LUN dedicated to replicas, which means that you would not have to have a replica on each logical unit number where clones are stored.   If you change the settings of your pool and visit data store option, you will see a checkbox to use different datastore for OS disk and disk to view composer.   Select this check box, and then select your data store that you want to place the replica.     Generally, it goes in the following order, but can be changed to match your environment.

replica SSD

clones FC

Persistent, SATA drive

See also this blog post, http://myvirtualcloud.net/?p=1137

Tags: VMware

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