Re: [Networker] Incorrect block size in Windows2003

Hi,

a article on the german support page states that if you use w2k3 SP1 the
tape.sys driver limits the blocksize to 64kb. The workaround is to use the
tape.sys from w2k3.

I don't know if there is a english version of the article.
ftp://ftp.legato.com/pub/NetWorker/German/ntgen_67.pdf

On Mi, November 2, 2005 11:52, Pierpa wrote:
> Hi,
> I've setup my ADIC ascalar library with 2 IBM LTO Ultrium 2 drives, in SAN
>  with A Windows2003 Networker 7.2.1 server. In order to setup a LTO
> blocksize of 256K, I've used the variable NSR_DEV_BLOCK_SIZE_LTO_ULTRIUM_2
> to 256, and it seems to work fine ( infact, as soon as I boot my networker
> server it says "LTO Ultrium-2 set to 256K". If I check on my Windows2003
> box, the IBM drivers sets these parameters:
>
> Max blocksize  2097152
> min blocksize   1 default blocksize 65536
>
> but, if I check a tape with "mt -f \\.\Tapex status" command I see
> something like :
>
> default blocksize  65536 minimum blocksize  1 maximum blocksize  131072
>
> So, the maximum blocksize is not the same I see using the GUI. Of course,
>  If I try to label a tape from networker, I see from scanner utility the
> block size to 128K and not 256K as I fixed using the NSR variable. I've
> installed/uninstalled the devices drivers several times, but I see always
>  the same frustrating difference between the GUI and the mt command. Of
> course the real blocksize on the tape is never 256K as I need, but 128k.
> Have I missed something ? There is something else I have to check ( even
> on the registries )??
>
> Any help is really apprecited
> Pierpa
>
>
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>

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