Re: Writing multiple CD volumes for the AS/400?

Brad,

I still dont understand how you will integrate your VTS to the as400.

Does it emulate a tape drive, with the SAVLIB and RSTLIB cmds referring to
the VTS as a tape drive name ?

Steve Richter

----- Original Message -----
From: "Brad Jensen" <brad@elstore.com>
To: <midrange-l@midrange.com>
Sent: Thursday, December 06, 2001 3:51 PM
Subject: Re: Writing multiple CD volumes for the AS/400?


>
>
> MacWheel99@aol.com wrote:
> >
> > 1. I have long suspected that IBM is mature in the utilization of
computer
> > resources, such that 94% compression possible on a PC is more an
indication
> > that PC objects waste space than a problem with compression algorithms.
>
> I am sorry if I wasn't clear. What I compressed 94% was a SAVLIB
> from an AS/400. It wasn't a file originating on a PC. I captured
> the SAVLIB through my tape emulator. It was written without
> compression to the tape interface by IBM's SAVLIB command.
>
> I compressed another library only 60%, this was program sources
> and object code.
>
> And yes I know that there is no error in my process - because I
> unzipped them and restored them through the same interface. I've
> done this dozens of times.
>
> It's the PC object (the zip file) that is not wasting space.
>
> I was tryin to figure how much AS/400 data would fit on a PC 100
> GB hard drive. At least 300 GB of AS/400 libraries will fit on a
> PC 100 GB hard drive, and as much as 1,600 GB ( 1.6 TB) is
> possible.
>
> And it means that between 1.8 Gb and 10.8 GB of AS/400 data will
> fit on a single CD-R. I just bought a 24X CD-r writer. Suppose
> you get compression somewhere in the middle - say 5 GB per
> CD-ROM. Back up your 20 gb of AS/400  data nonstop to the VTS
> system, then write out all the data in about ten minutes.
>
> Of course, IFS files backuped to tape will not compress that
> well, because most images, zips, and many modern word documents
> are well compressed also.
>
> Brad Jensen
>
> Lasrvault Report Archiving
> eee.elstore.com
>
>
>
> --
> Brad Jensen brad@elstore.com
> President
> Electronic Storage Corporation Tulsa OK USA
> 918-664-7276
>
> LaserVault Report Retrieval & Data Mining
> www.Laservault.com
>
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