high availability on nt

I am developing a project based on Oracle8 Server Enterprise Edition (8.0.0.4) with Parallel option running on Microsoft Windows NT EE. Issues have arised when planning the complete solution.

• DLT or DAT tape backup should strip and mirror a six-tape rack (3/3). RMAN should see as one. Wich hardware vendors build such systems (RAIT)?

-One multichannel (usuallly 4) interface card should connect two parallel
servers, providing more bandwith and alternative path in case of cable disruption. Another NIC should connect two channels to one switched hub and the other two to another hub. Znyz builds such NIC, called RAINCluster (Redundant Array of Independent Netports). Does anyone else build these system?

-Should one PC with RAID 5 (using Mylex PCI card) has its set of internal
disks or an external rack is preferrable ?

Price is not the first issue, due the system is mission critical. I appreciate any comments or case studies in this matter.

I am open to share experiences and results.

Thanks in advance

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