The announcement for Parallels Compressor states that performance gains are to be most likely when using that technology because access times for stored data are supposed to reduce. On the other hand, it seems logical to me that disk compression imposes costs in terms of administrative overhead. So you have shorter access times but more overhead when reading/writing data. What net gain (or loss) ought to be expected under normal usage conditions when enabling Parallels Compressor? Kind regards, Malte.
Actually there is no compression/decompression on the fly (in which case some administrative overhead could take place). Instead of this Compressor is clean and compact virtual disk once and then all operation with it running in native mode. It should improve performance for old and fragmented virtual disks,
