I always heard about problem about HD space to save. If the problem remains for
many years, it's probably because the problem was not solved by simply adding
HD, but in cleaning the user spaces (delete/compress files less used, etc...).

I never had a problem with 7zip since 2005, I believe that a support exists
anyway.
The SAS files zipped decreased in size even if the file was created with
compress=binary.
We use the windows compress option on directories, too. But I'm more cool with
7zip than windows compression. Perhaps it's stupid.

For the cost of HD, the main problem is not the price as you wrote yes, but the
human ressources to do the change on the server etc ... **it's not 50
cents/gb**.

About DVD backup, the solution is not sufficient for our volume and we can lost
the disk and the DVD time access is less interesting than the zipped file time
access on our server ( easy answer :) I know, but each solution has a
disadvantage).

So why ?
I think It's not to save cost in fact, but to save bytes in our current
workspace (without keep in mind the GB price). We can't always continue to buy
HD space when we can clean and manage our workspace differently. we can hence
buy another things with our budget.



Stephane



Selon Gerhard Hellriegel <gerhard.hellriegel@T-ONLINE.DE>:

> I would not recommend to use a product to compress and uncompress. And
> never use any freeware product for a important production application! You
> might plan problems with that! What is, if there is a problem some day?
> Where do you get support? For SAS files it seems to be ok for most
> of "normal" usage to use the SAS-internal option compress. For special
> purposes, compress=binary. All other ways will slow down everything and
> might be a cause for errors.
> If you are working with big non-SAS files, e.g. for input, I'd use not
> more than the Windows-internal folder compression. Also that slows things
> down, but not much. For SAS libraries, both could be used.
> On the other hand: how much do you pay for a GB diskspace today? 50 cent
> or less? Next year it will be 10 cent. Why you want to compress data? To
> save costs? Are you sure?
> For backup perhaps. But: last year you used CDs with 700 MB. If it is too
> small, use DVDs now! If that is still too small, use blue ray or whatever
> next year! Also, most of the common backup software has his own
> compression on board.
> So WHY?
> Gerhard
>
>
> On Thu, 5 Apr 2007 12:27:25 +0200, =?iso-8859-1?b?U3TpcGhhbmU=?= COLAS
> <scolas@DATAMETRIC.FR> wrote:
>
> >be careful with ZIP and WINZIP on windows because the standard product
> does not
> >allow to zip in batch mode (ie. by a another product that call zip). You
> have
> >to buy an option.
> >
> >I sent last year (perhaps 2005) on the SAS-L a link to 7zip that is a
> freeware
> >that do that. we use it again in our .bat . It's easy to use.
> >
> >
> >Cordialement/
> >Best regards,
> >
> >Stephane COLAS
> >
> >**************************
> >Soci鴩 Datametric
> >
> >Notre site / Our site
> >http://www.datametric.fr
> >**************************
> >
> >
> >Selon Gerhard Hellriegel <gerhard.hellriegel@T-ONLINE.DE>:
> >
> >> Hi,
> >> what do you mean with ZIP? I assume a compression.
> >> You can use Windows for that. Use the explorer, right click on the
> folder
> >> where your files are located and select "Options". There you'll find
> >> somewhere something like "extended attributes" (could also be something
> >> like that, I have a german Win). You'll find a checkbox to use
> compression
> >> for the folder and if you want also all subfolders.
> >> It is not as efficient like WinZIP, but it works in realtime.
> >>
> >> I hope, you have one of the NT-Windows, like NT, XP, 2K, ... Not Win 98.
> >> Gerhard
> >>
> >>
> >> On Thu, 5 Apr 2007 01:06:37 -0700, piditi <piditi@GMAIL.COM> wrote:
> >>
> >> >...I'd create a program in sas that automatically zip all the file
> >> >(all file and not only sas file) in a specific path on my pc. do you
> >> >know if it's possible???Thanks diti
> >>
>