The CPU usage during the treatment of empty blocks VDR

Why "datarecovery" process uses 100% CPU during the processing of the empty rooms of VMDK? Dedup so complex algorithm (inefficient read) that he needs 100% of the CPU for the treatment of the zeros?

Please inform me

For HW7 virtual machines we do not read the blocks of zero from the disc, but we chunk through the blocks of zero in the store of deduplication. If the disc has a large number of blocks of zero then for the VMs HW7 zero block segmentation will only during the first backup - since we leverage change block followed after the 1st backup. For VM HW4 this will happen during each backup since there is no change tracking support block.

Tags: VMware

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