HP P4000 SAN User Manual page 62

Best practices for deploying citrix xenserver

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initial deployment of SmartClone volumes takes no additional footprint on the SAN, these volumes are

fully writeable and may ultimately be completely re-written to occupy an entire volume's worth of

space. Functions such as defragmentation at the file system level may count as additional new writes

to the SAN as some operating systems prefer to write new blocks over claiming original blocks.

Therefore, it is considered best practice to defragment before a SmartClone is performed. SmartClone

volumes should disable defragmentation operations as this may lead to volumes filling out their thin

provision.

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