Wanda Windows enumerates each storage (eg SCSI, IDE, fibrechannel) adapter on boot-up. In your configuration, at least 7 are discovered, with the HBAs given numbers 5,6 and 7. You'll probably find that 1 and 2 are used by the primary and secondary ports of your IDE controller, with 3 and 4 maybe some RAID controller.
You can check out the enumeration of the adapters in the registry by looking at the key HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SCSI. This will contain a number of sub-keys of the form 'Scsi Port n'. Each sub-key has a 'Driver' value indicating the sort of adapter - eg 'atapi' for an IDE/EIDE adapter. Each particular adapter can host a number of SCSI buses, hence the requirement to specify a bus number when uniquely addressing a device. In reality there is only usually one bus per adapter (bus 0 in each of yours). This is because the most common way of implementing a dual-port SCSI adapter or HBA it to make it appear as two logical adapters in the same PCI slot. This SCSI bus number is internal to a specific adapter and not related to the PCI bus number of the the slot containing the adapter, which I think is where the confusion arose. Where a fabric is zoned so that each HBA can see more than one device, it makes sense to create 'persistent bindings' between the WWNs of the device and its target ID and LUN (and if it is configurable, bus too). This prevents a device in a library mysteriously 'jumping' from one element number to another across reboots. This is not an issue for you as you have direct point-to-point connections between HBA and device. Regards Neil Schofield Yorkshire Water Services Ltd. Download walks around Yorkshire Water's reservoirs at http://www.yorkshirewater.com/yourenjoyment/main_walk.html The information in this e-mail is confidential and may also be legally privileged. The contents are intended for recipient only and are subject to the legal notice available at http://www.keldagroup.com/email.htm Yorkshire Water Services Limited Registered Office Western House Halifax Road Bradford BD6 2SZ Registered in England and Wales No 2366682
