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- Newsgroups: comp.sys.ibm.pc.misc
- Path: sparky!uunet!mcsun!news.funet.fi!ousrvr.oulu.fi!tnclus.tele.nokia.fi!lauusitalo
- From: lauusitalo@tnclus.tele.nokia.fi
- Subject: Re: Stacker 3.0 Questions
- Message-ID: <1992Dec15.124228.1@tnclus.tele.nokia.fi>
- Lines: 88
- Sender: news@ousrvr.oulu.fi
- Organization: Nokia Telecommunications.
- References: <Bz6tCw.Cv@news.cso.uiuc.edu> <rnk2ps@rpi.edu>
- Date: Tue, 15 Dec 1992 10:42:28 GMT
-
- In article <rnk2ps@rpi.edu>, duchad@aix02.ecs.rpi.edu (David Benedict Ducharme) writes:
- > In article <Bz6tCw.Cv@news.cso.uiuc.edu> mlandaue@ux4.cso.uiuc.edu (Michael C Landauer) writes:
- >>
- >>I am considering buying Stacker 3.0 as my 40MB hard drive is almost full.
- >>I would like to ask a couple questions to those who have used this product.
- >>
- >>1. What improvements were made from version 2.0?
- >>
- >>2. Has anyone encountered any bugs?
- >>
- >>3. Are there any programs that don't work with it?
- >>
- >>4. To anyone using it with a 40MB hard drive: How much space did it add?
- >>
- >>Thanx in advance!
- >>Merry Xmas!
- >>
- >>Mike Landauer
- >>mlandaue@ux4.cso.uiuc.edu
- >>
- > in addition I was wondering if, and how much Stacker affects the programs
- > that are running. Does it slow it down,
- >
- > Also, when you are storing to a tape backup, say a Colorado 250 Jumbo,
- > how is the data saved. If I originally have a 160 meg drive, and
- > Stack it, will I be able to backup the "320 Megs" of the 160
- > drive.
- >
- > Thank you
- > duchad@rpi.edu
-
- People seem to have little misunderstands about stacker. It uses one huge
- file containing all files in packed format. When there is need for file
- stacker unpacks it from that file. This happens automatically and you
- can not notice it. It does not pack files like PKlite and such exe packers.
- They affect one file at time so to say. If you compress your files using
- PKZIP or PKLite or any other "conventional" compress program you affect
- one file at time. These you can backup to tape individually and you can
- save tape space. But if you copy stacked files to tape they take just
- as much tape space as normally without stacker. You have to compress them
- separately by some program to save space. You could backup that huge
- stackvol file. But restoring individual files would be impossible.
- I thought that these tape backup programs had their own compress routines.
-
- I do not know if there is possibility to stack tape drive acting like
- disk drive. But is there any need for that?
-
- Speed is one thing people often complain about stacker. I am not sure
- if these people have ever used stacker. Slow harddrives like
- old Seagates >28ms will be quicker when using stacker. Because HD does
- not have to make so many rotations and seeks to find program which is
- now located in smaller area. When using fast disks this is not same.
- It might be faster without stacker but little smaller also.
- If the speed is must then consider that HW option. Although bigger and
- faster HD might be cheaper. Tough choice. Anyway you will add that
- stacker later when your bigger HD comes to 99% full. :)
-
- Stacker adds as much space as you want. You can change that scaling number
- to whatever you want. But this is only part of the truth. This is only
- used to show free space numbers and has nothing (or very little) to do
- with real free space.
-
- If you have disk full of zips then there is no need or use for stacker. You
- could not get any more space. But if you have normal exe and txt stuff then
- adding stacker increases disk capacity to about 1.5 times old capacity.
- So you could get about 60 MB real storage capacity. May be even 80 MB
- if you have "loose" files.
-
- If you were asking about improvements to 2.0 then look previous postings
- where was a notify about these. Someone said that speed was better but
- compress ratio has not changed (at least substantionally).
-
- I have used stacker 2.0 for quite a long time and have had almost no
- problem with it. AOTP had some sort of problems but they are solved.
- Mostly it is because some program behaves like it shouldn't an I guess
- with these programs problems can arise with plain DOS.
-
- Hope that this clarifies something somewhere. Perhaps there are some
- bugs in this writing but correct me if any.
-
-
- Merry Xmas to you both and all you out there!!
-
- Lauri
-
- ps. I have nothing to do with Stacker except using it. So these are my
- own opinions and observations. Wrong or right.
-
-