I agree Zoltan, it's very specific and I too would like for IBM to explain
what the reasoning behind the warning is.
Personally, I suspect it's a cover your *** type of deal, with that many
releases of so many different kind of clients floating around I would kind
of understand the reasoning behind something like that.

On Wed, Aug 23, 2017 at 2:04 PM, Zoltan Forray <zforray AT vcu DOT edu> wrote:

> I agree with both of your responses that it should not be an issue and the
> "compatibility" page says it should be good as far as server/client levels
> go.  But since the docs have the very specific warning about upgrading the
> servers to 8.1.2 before clients or *"If you do not upgrade your servers
> first, communication between servers and clients might be interrupted."*, I
> felt I should ask for empirical evidence that it wont cause problems. The
> warning was not specific on what kinds of communications problems to expect
> or if/how they can be addresses if someone decides to download and upgrade
> their client simply based on the "yes, 7.1 servers are compatible with 8.1
> clients" document and didn't see the warning I read.
>
> Perhaps it is due to TLS 1.2 now turned ON by default.  Either way, more
> details/specifics from IBM would be helpful.
>
> On Wed, Aug 23, 2017 at 4:21 AM, Stefan Folkerts <
> stefan.folkerts AT gmail DOT com>
> wrote:
>
> > I agree with Eric and I have 8.2 VE setups connected to 7.1 servers at
> > multiple sites, i've never seen any issues. I do find the documentation
> > strange if it say's you need to upgrade your clients before upgrading the
> > server. The only thing that makes sense to me is client-side dedup with
> > compression, for that you want your clients on the latest level otherwise
> > the compression isn't compatible with the server compression and you
> don't
> > get optimal results.
> >
> > On Wed, Aug 23, 2017 at 9:17 AM, Loon, Eric van (ITOPT3) - KLM <
> > Eric-van.Loon AT klm DOT com> wrote:
> >
> > > Nor with up-leveled clients by the way, which is the case here.
> > > Kind regards,
> > > Eric van Loon
> > > Air France/KLM Storage Engineering
> > >
> > >
> > > -----Original Message-----
> > > From: Loon, Eric van (ITOPT3) - KLM
> > > Sent: woensdag 23 augustus 2017 9:15
> > > To: ADSM-L AT VM.MARIST DOT EDU
> > > Subject: RE: 8.1.2 client and 7.1.7 servers
> > >
> > > Hi Zoltan!
> > > The page http://www-01.ibm.com/support/docview.wss?uid=swg21053218
> shows
> > > that the SP 8.1.2 client is supported with all 8.1 and 7.1 servers. I
> > have
> > > never encountered issues with down-leveled clients in my 20+ years of
> TSM
> > > history.
> > > Kind regards,
> > > Eric van Loon
> > > Air France/KLM Storage Engineering
> > >
> > > -----Original Message-----
> > > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On 
> > > Behalf
> Of
> > > Zoltan Forray
> > > Sent: dinsdag 22 augustus 2017 15:03
> > > To: ADSM-L AT VM.MARIST DOT EDU
> > > Subject: 8.1.2 client and 7.1.7 servers
> > >
> > > Has anyone tried using the latest 8.1.2 clients with 7.1.7 servers?  I
> > > haven't had the chance to test such a configuration (since my lone test
> > > server is at 8.1.1) and with the dire-warnings in the readme docs, I
> made
> > > sure everyone on my staff knows to NOT install 8.1.2 clients.
> > >
> > > From the readme/docs:
> > >
> > > Upgrade your IBM Spectrum Protect™ servers to Version 8.1.2 before you
> > > upgrade the backup-archive clients.
> > >
> > >
> > >
> > > If you do not upgrade your servers first, communication between servers
> > > and clients might be interrupted.
> > >
> > >
> > > --
> > > *Zoltan Forray*
> > > Spectrum Protect (p.k.a. TSM) Software & Hardware Administrator Xymon
> > > Monitor Administrator VMware Administrator Virginia Commonwealth
> > University
> > > UCC/Office of Technology Services www.ucc.vcu.edu zforray AT vcu DOT edu -
> > > 804-828-4807 Don't be a phishing victim - VCU and other reputable
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>
> --
> *Zoltan Forray*
> Spectrum Protect (p.k.a. TSM) Software & Hardware Administrator
> Xymon Monitor Administrator
> VMware Administrator
> Virginia Commonwealth University
> UCC/Office of Technology Services
> www.ucc.vcu.edu
> zforray AT vcu DOT edu - 804-828-4807
> Don't be a phishing victim - VCU and other reputable organizations will
> never use email to request that you reply with your password, social
> security number or confidential personal information. For more details
> visit http://infosecurity.vcu.edu/phishing.html
>