askDisks = getListQuorum("strict", set.setDriveCount)
					}
				}

				// Special case: ask all disks if the drive count is 4
				if set.setDriveCount == 4 || askDisks > len(disks) {
					askDisks = len(disks) // use all available drives
				}

				var fallbackDisks []StorageAPI
				if askDisks > 0 && len(disks) > askDisks {
					rand.Shuffle(len(disks), func(i, j int) {

		if err := api.Walk(ctx, r.Source.Bucket, r.Source.Prefix, walkCh, WalkOptions{
			Marker:   lastObject,
			Filter:   selectObj,
			AskDisks: walkQuorum,
		}); err != nil {
			cancel()
			// Do not need to retry if we can't list objects on source.
			return err
		}

		prevObj := ""

		skipReplicate := false