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Re: [ADSM-L] ULTRIUM4C but not 1.6TB

2010-12-09 07:21:48
Subject: Re: [ADSM-L] ULTRIUM4C but not 1.6TB
From: Richard Sims <rbs AT BU DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 9 Dec 2010 07:18:20 -0500 
On Dec 9, 2010, at 3:18 AM, Mehdi Salehi wrote:

> Hi,
> Drives are LTO4, devclass is ULTRIUM4C, but all "Full" volumes are between
> 800GB to 1TB. Is it normal? It seems TSM does not use compression.

The physical capacity of Ultrium 4 is 800 GB, so compression is obviously 
happening.  Some data is more compressible than other data, and some is 
essentially incompressible.

    Richard Sims
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