ADSM-L

Re: LTO3 tape capacity

2005-09-25 13:04:41
Subject: Re: LTO3 tape capacity
From: Dmitri Pasyutin <pasyutin AT FREE DOT FR>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Sun, 25 Sep 2005 19:04:18 +0200
On Sunday 25 September 2005 16:45, Alexander Lazarevich wrote:
> tsm: ITG-TSM>q vol stgpool=lto3pool
> Volume Name                 Storage        Device        Estimated
>                              Pool Name      Class Name     Capacity Pct
> ------------------------    -----------    ----------    --------- ----
> ITG001L3                    LTO3POOL       LTOCLASS2     800,000.0 20.5
> Filling
> ITG002L3                    LTO3POOL       LTOCLASS2     386,496.7 90.2
> Full
>
> Then, notice the volumes in the LTO3POOL are LTO3 tapes, 800GB capacity,
> compressed that is, and should be 400GB native.

You didn't post the output of 'q devc LTOCLASS2 f=d' - the value of
FORMAT should be 'ULTRIUM3C' if you want to use compression. The
"estimated capacity" gives an idea about the tape's capacity, but doesn't
force compression, in fact you can set it to anything you want.

Dmitri

<Prev in Thread] Current Thread [Next in Thread>