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Article #203

CMS JUMBO and DR-DOS/superstore

#203
From: Daniel Burstein
Date: Wed, 27 Jan 1993 19:13
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Using the DRDOS "superstor" disk compressor gives (roughly) a 2:1
compression on the original data (mileage may, and does, vary).

In a single hard-disk setup ("C:") it will leave a small amount of
housekkeping info in non-compressed partitions, which it names drive "D:",
and compresses drive C: as a portion of "D:"

this is generally transparent to the user, and drive "C:" is accessed just
like it would have been without compression.

Confused enough?  now to my question;

  I have the CMS Jumbo, and up to know, I've been directly back-upping
(sp?) the "C:" drive from the "C:" drive itself.  Straightforward, since
the drive "looks" normal (just twice the size)

  But, in looking further, I notice that in the "D:" drive is a huge
semi-visible file called "sstorxxx.yyy" (more or less) which is the
partition set aside for the compressed C: drive.  The CMS software seems
to offer me the option of simply backing up the entire "D:" drive,
including in it the C:/sstor section.

  So.... when I'm saving stuff to tape, can I simply do a "D:" drive
backup and get everything that way?  I realize I won't be able to access
individual files (at least not those inside the "C:/sstor" portion) but
for the full drive backup this would make life a bit easier.

  does anyone have any hands on expericen with this?

thanks

dannyb@panix.com
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From: dannyb@panix.com (Daniel Burstein)
Subject: CMS JUMBO and DR-DOS/superstore
Message-ID: <C1J1Er.Fyy@panix.com>
Organization: PANIX Public Access Unix, NYC
Date: Wed, 27 Jan 1993 19:13:38 GMT
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