[Info-vax] HBMM vs HBVS

[Phillip Helbig---undress to reply]

In article <j86ekf$ev4$1 at usenet01.boi.hp.com>, "Robert A. Brooks"
<rab at aitchpee.com> writes: 

> > With SHOW SHADOW and SHOW DEVICE/BITMAP, one can see the HBMM bitmaps,
> > information related to them etc.  Since someone here mentioned that HBVS
> > and HBMM, though similar in functionality, don't have much overlap, and
> > that common bitmaps came only sometime after 7.3-2, I'm wondering where
> > similar information about HBVS is stored.
> 
> Huh?  HBVS = Host-Based Volume Shadowing
>        HBMM = Host-Based Minimerge (or MiniMerge or Mini Merge, etc...)

Right.

> I have no idea what you mean by
>        "Since someone here mentioned that HBVS and HBMM, though
>         similar in functionality, don't have much overlap..."
> 
> HBMM is subordinate to HBVS; HBVS can function without HBMM, whereas it
> makes no sense to talk about HBMM without HBVS.

OK.  Maybe I should have written "minicopy vs minimerge".

> HBMM uses the Write Bitmap technology that first appeared in V7.3 (and 
> backported to V7.2-2). It was created to enable HBVS minicopy.

OK.