Windows 2003 small luns from external sto Ʌ
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Windows 2003 small luns from external sto Ʌ

 
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Rdiger Grimm
Guest
Posted: Fri Sep 09, 2005 8:17 am    Post subject: Windows 2003 small luns from external sto Ʌ Reply with quote
Hi Group,

I have a W2k3-server with an external storage (HDS9500).
I mapped 50GB as lun 0 --> everything´s OK, the lun is recognized by
win.
As second lun I mapped 2GB (same server, same HDS, same controller,
same
port, same switch, ...) as lun 102. Windows did NOT see this lun
(yes, I did a disk-rescan/reboot). If I map the same 2GB as lun 4,
windows DID see it! OK, so I map it to lun 10 --> Windows did NOT see
it.....

2GB --> lun 102 doesn´t work
2GB --> lun 004 work
2GB --> lun 010 doesn´t work


Can anybody give mit a hint?????

Thank You in advance!

Ruediger
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Rdiger Grimm
Guest
Posted: Fri Sep 09, 2005 2:10 pm    Post subject: Re: Windows 2003 small luns from external ѿ&mͽٕt Reply with quote
Quote:
Hi Group,

I have a W2k3-server with an external storage (HDS9500).
I mapped 50GB as lun 0 --> everything´s OK, the lun is recognized by
win.
As second lun I mapped 2GB (same server, same HDS, same controller, same
port, same switch, ...) as lun 102. Windows did NOT see this lun
(yes, I did a disk-rescan/reboot). If I map the same 2GB as lun 4,
windows DID see it! OK, so I map it to lun 10 --> Windows did NOT see it.....

2GB --> lun 102 doesn´t work
2GB --> lun 004 work
2GB --> lun 010 doesn´t work


Can anybody give mit a hint?????

Thank You in advance!

Ruediger

Hi,

ok, it´s done.
It was an option on the HDS:
"Logical Unit Number more than or equals to 8 can be recognized by
Windows2000/2003"


Ruediger
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John Toner [MVP]
Guest
Posted: Fri Sep 09, 2005 4:17 pm    Post subject: Re: Windows 2003 small luns from externa &m ?t Reply with quote
Windows in general will have issues reconizing LUN IDs greater than FF.

Regards,
John

"Rdiger Grimm" <rg@grimm-ruediger.de> wrote in message
news:mn.4a9e7d5926dfc2b2.37417@grimm-ruediger.de...
Quote:
Hi Group,

I have a W2k3-server with an external storage (HDS9500).
I mapped 50GB as lun 0 --> everythings OK, the lun is recognized by
win.
As second lun I mapped 2GB (same server, same HDS, same controller, same
port, same switch, ...) as lun 102. Windows did NOT see this lun
(yes, I did a disk-rescan/reboot). If I map the same 2GB as lun 4,
windows DID see it! OK, so I map it to lun 10 --> Windows did NOT see
it.....

2GB --> lun 102 doesnt work
2GB --> lun 004 work
2GB --> lun 010 doesnt work


Can anybody give mit a hint?????

Thank You in advance!

Ruediger

Hi,

ok, its done.
It was an option on the HDS:
"Logical Unit Number more than or equals to 8 can be recognized by
Windows2000/2003"


Ruediger

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Jeff Goldner [MS]
Guest
Posted: Sat Sep 17, 2005 8:16 am    Post subject: Re: Windows 2003 small luns from externa &m ?t Reply with quote
Right. If 102 is a decimal value, you are ok. Windows only supports single
level peripheral device addressing. Actually, 0-254 are usable. If you use
any other scheme, wraparound of the LUN number can occur and the results are
"less than desirable".

The Hitachi option enables support for the REPORT LUNS command which is
required to go beyond LUN 7 (scsiport) or to see any luns (storport).

"John Toner [MVP]" <jtoner@DIE.SPAM.DIE.mvps.org> wrote in message
news:un4Qq%23TtFHA.3752@TK2MSFTNGP09.phx.gbl...
Quote:
Windows in general will have issues reconizing LUN IDs greater than FF.

Regards,
John

"Rdiger Grimm" <rg@grimm-ruediger.de> wrote in message
news:mn.4a9e7d5926dfc2b2.37417@grimm-ruediger.de...
Hi Group,

I have a W2k3-server with an external storage (HDS9500).
I mapped 50GB as lun 0 --> everythings OK, the lun is recognized by
win.
As second lun I mapped 2GB (same server, same HDS, same controller,
same
port, same switch, ...) as lun 102. Windows did NOT see this lun
(yes, I did a disk-rescan/reboot). If I map the same 2GB as lun 4,
windows DID see it! OK, so I map it to lun 10 --> Windows did NOT see
it.....

2GB --> lun 102 doesnt work
2GB --> lun 004 work
2GB --> lun 010 doesnt work


Can anybody give mit a hint?????

Thank You in advance!

Ruediger

Hi,

ok, its done.
It was an option on the HDS:
"Logical Unit Number more than or equals to 8 can be recognized by
Windows2000/2003"


Ruediger



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