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#1
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W2k EMC install problem with LUN greater 0
Hello NG
i hope you can help me or figure out my problem whenn I´m in the wrong NG please told me My System: IBM Netfinity 7000 M10 Qlogic 2200F direct attached to EMC Symetrix W2k Advanced Server is installed on the first HD (Disk0)(C that is assigned from EMC every thing ok until here Now my problem I try to Install an second W2k for Backup operations on HD 2 (Disk1) that is assigned from EMC but i get the error message from the W2k installer that i can not install W2k on an LUN greater than 0 I get also an Message every boot from Qlogic Adapter Bios looks like this Drive Letter C: is Moved to Drive Letter D: Loop ID 27,0 is Installed As Drive C: best regards Oliver |
#2
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Oliver Fischer wrote:
Hello NG I get also an Message every boot from Qlogic Adapter Bios looks like this Drive Letter C: is Moved to Drive Letter D: Loop ID 27,0 is Installed As Drive C: Sounds like you've got the BIOS enabled on the QLOGIC HBA, try disabling it, that's worked for me in the past with booting W2K from the SAN. -- Nik Simpson |
#3
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I'm going to make the following assumption: Both W2k hosts can see all the
devices on the storage array. If this is true, this is a Bad Thing. This only works for W2k cluster, and only if the two hosts cannot see each other's system/boot drives. Additionally, it sounds like W2k / QLogic really want at least the system drive to be LUN 0. You need some sort of LUN masking technology, so that one volume in the array is LUN 0 for host 1, and another volume in the array is LUN 0 for host 2. The other volumes (data volumes, I presume) on the array can be shared by the hosts, but ONLY if you have clustering. Specifically, you cannot let host 2 see host 1's volumes (system/boot, or data) without some seriously intelligent file-system hacks (Veritas, maybe?). This (if I understand correctly) pretty much puts a damper on the backup-host idea. Been there, done that, have the corrupted data to prove it... This is because: a) host 1 will host-cache data. That is, just because you write to disk, does not mean that it actually gets to disk for some finite (sometimes long) period of time. b) host 2 will host-cache data. That means, even after host 1 writes data to disk, if that sector was in host 2's cache, host 2 will not bother to re-read the data from disk, and you'll never see the update on host 2. c) host 2 will occasionally try to write to the drives, thus corrupting them, as far as host 1 is concerned. You may want to investigate the snapshot capabilities in Win2003. That may help... "Oliver Fischer" wrote in message m... I try to Install an second W2k for Backup operations on HD 2 (Disk1) that is assigned from EMC but i get the error message from the W2k installer that i can not install W2k on an LUN greater than 0 I get also an Message every boot from Qlogic Adapter Bios looks like this Drive Letter C: is Moved to Drive Letter D: Loop ID 27,0 is Installed As Drive C: |
#4
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"Nik Simpson" wrote in message ...
Oliver Fischer wrote: Hello NG I get also an Message every boot from Qlogic Adapter Bios looks like this Drive Letter C: is Moved to Drive Letter D: Loop ID 27,0 is Installed As Drive C: Sounds like you've got the BIOS enabled on the QLOGIC HBA, try disabling it, that's worked for me in the past with booting W2K from the SAN. As far as I know, Qlogics BIOS have to be enabled for SAN boot capability. If it is enabled, the BIOS let you see all of your SAN discs and give you a choise from which to boot. These special boot option can be seen if you entered Qlogics FastUtil during system boot, I guess Ctrl+Q is the key. My personal assumption is that W2k mixed up all detected FC-Luns each time you boot and/or bind detected FC-Luns to one single scsi-target id with multiple Luns. You should try to use Qlogics Sansurfer Toolkit (it's free) for making sort of persistent binding to the detected discs. As far as I remember this tool let you define a fixed scsi target id for each FC-LUN, though you might overcome that problem with windows installer. Nevertheless, as Kurt Duncan said, no other system, except cluster systems, should have access to these discs, too. For that purpose EMC Symmetrix systems comes with VolumeLogix, EMC Clariion systems uses AccessLogix. Rene |
#5
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My personal assumption is that W2k mixed up all detected FC-Luns each
time you boot and/or bind detected FC-Luns to one single scsi-target id with multiple Luns. This behaviour depends not on w2k OS, but on a particular SCSI miniport driver - Qlogic in this case. -- Maxim Shatskih, Windows DDK MVP StorageCraft Corporation http://www.storagecraft.com |
#6
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"Maxim S. Shatskih" wrote in message ...
My personal assumption is that W2k mixed up all detected FC-Luns each time you boot and/or bind detected FC-Luns to one single scsi-target id with multiple Luns. This behaviour depends not on w2k OS, but on a particular SCSI miniport driver - Qlogic in this case. Right. So from the customers point of view he stucks with the miniport driver. Storport is only available for QLA23xx HBAs and Windows2003. Port drivers aren't available, are they? For all recommended EMC drivers use: http://www.emc.com/horizontal/intero...t_matrices.jsp Rene |
#7
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Right. So from the customers point of view he stucks with the miniport
driver. Storport is only available for QLA23xx HBAs and Windows2003. Port drivers aren't available, are they? This is not a SCSIPORT problem. SCSIPORT does not impose any requirements or whether the devices sit on the same target - or on different targets. This is the miniport's decision, for SCSI, it depends on the physical bus layout, for FC, can be emulated. It is possible to implement the sane ID invention logic using SCSIPORT. Port drivers are available, we sell one, for instance :-) -- Maxim Shatskih, Windows DDK MVP StorageCraft Corporation http://www.storagecraft.com |
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