Bacula-users

Re: [Bacula-users] LTO media type mixup

2012-03-05 11:07:09
Subject: Re: [Bacula-users] LTO media type mixup
From: John Drescher <drescherjm AT gmail DOT com>
To: Tilman Schmidt <t.schmidt AT phoenixsoftware DOT de>
Date: Mon, 5 Mar 2012 11:05:28 -0500
On Mon, Mar 5, 2012 at 10:44 AM, Tilman Schmidt
<t.schmidt AT phoenixsoftware DOT de> wrote:
> Am 05.03.2012 15:43, schrieb Alan Brown:
>> On 05/03/12 14:17, Adrian Reyer wrote:
>
>>> Well, 'Media Type' is misleading. It is more a 'Media Group'. every
>>> medium in the same group can be requested on every SD that support that
>>> 'Media Group'. It doesn't actually have anything to do with the mediums
>>> capabilities/size.
>>
>> To add confusion, any given bacula drive can only support one media type.
>>
>> The only way around this problem is to define extra drives for each
>> media type supported (ie, LTO5, LTO4 and (read-only) LTO3).
>
> What's wrong with just defining a single media type "LTO" covering all
> generations in use?
>

The problem is that you may want to separate your volumes so bacula
does not want to try to write to an LTO2 tape on an LTO5 drive.
Remember that with LTO drives you can read 2 generations back but only
write 1 generation back.


John

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