I. Phenomena:

an X of the external storage disk array is divided into volumes windows one host1.5T the volume mode is simplified thin lun, Business host display1.5T and500g available, the storage side has exceeded the score160%, data has been written2.4T,

Due to the problem of thin volumes, the host-side business is executed delete, the actual space is not set to zero, but marked, that is to say, no clear command is issued to allow storage to recycle the space. The space on the host side is not released, which always occupies a relatively high proportion, the proportion of space usage on the host side is different from that on the storage side.

II. Requirements and solutions:

    reclaim the space on the host and storage side, and convert the volume to thick backup.

Step 3:

①, storage expansion, from1.5T expand3T,

② host side, Computer Management-- disk scan-- expand space

③, sdelete -z drive letter: for example sdelete -z d:

wait until the storage side is recycled.

④. Storage side thick provisioning conversion,
⑤. Verify the data after completion.

IV, sdelete download and use

IV, sdelete download and use

①, website:

https://docs.microsoft.com/zh-cn/sysinternals/downloads/sdelete

-- Stop work--