Remote storage verification

A method for execution by one or more processing modules of one or more computing devices of a dispersed storage network (DSN)， the method begins by determining a slice name of an encoded data slice to verify， obtaining the encoded data slice and compressing the encoded data slice to produce a compressed encoded data slice， determining a storage set of DS units associated with the slice name， sending compressed encoded data slice partial request messages to the storage set of DS units， and receiving at least a decode threshold number of compressed encoded data slice partial response messages to produce compressed encoded data slice partials. The method continues by determining whether a sum of the compressed encoded data slice partials compares favorably to the compressed encoded data slice and indicating a failed test when the comparison is not favorable and indicating a passed test when the comparison is favorable.