ADSM-L

Re: LTO tape cartridge(200GB/400GB) stores data 500GB+.

2004-04-18 07:49:11
Subject: Re: LTO tape cartridge(200GB/400GB) stores data 500GB+.
From: Laurent Bendavid <bendavid.laurent AT FREE DOT FR>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Sun, 18 Apr 2004 13:48:45 +0200
Are you sure that you are not backuping sparse file as database file ?

Chandrashekar, C. R. (Chandrasekhar) wrote:

This is not a puzzle for me, Actually I want to know how much data it can
compress, Is there any one using same tape library. Which helps to estimate
the total storage capacity.

Just to know how much percentage of compression in 3583L23 library using
3580ULTGen2 drive.

Thanks,
c.r.chandrasekhar

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
Christo Heuer
Sent: Friday, April 16, 2004 10:51 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: LTO tape cartridge(200GB/400GB) stores data 500GB+.


Hi,

I see you are a Tivoli certified consultant (TSM) - maybe they missed that
part in
the certification exam - why don't you read up on compression - if this
puzzles you
I'm sure plenty other things will confuse the hell out of you.

Christo
----- Original Message -----
From: "Chandrashekar, C. R. (Chandrasekhar)" <cr.chandrashekar AT TIMKEN DOT 
COM>
To: <ADSM-L AT VM.MARIST DOT EDU>
Sent: Friday, April 16, 2004 6:51 AM
Subject: LTO tape cartridge(200GB/400GB) stores data 500GB+.




Hi,

Just for clarification, I'm using LTO-Ult tape cartridge having capacity


of


200GB/400GB, Tape library 3582L23 with two 3580-LTOG2 drives with firmware
38D0, and devclass was defined with device-type=LTO and Format=ULTRIM2C.


Now


the tape is storing more then 500GB of data, Is it normal behavior.

Thanks,
CRC,

C.R.Chandrasekhar.
Systems Analyst.
Tivoli Certified Consultant (TSM).
TIMKEN Engineering & Research - INDIA (P) Ltd., Bangalore.
Phone No: 91-80-51362222.
Email:cr.chandrashekar AT timken DOT com.




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