Re: Disks Raid and INFORMIX-SE

Michael E Willett wrote >> >>No. Depending on your RAID Controller (use a multichannel/caching hardware >>solution) you will get speed and security. Best results we had with RAID-5. >> >We'd suggest your read the Informix customer documentaries on >the Storage Computer RAID 7 WWW server: http://www.storage.com/ > I did, but still have few questions: > RAID Level 7 is a patented architecture of Storage Computer Corporation that > incorporates a totally asynchronous hardware environment with a multi-tiered > cache memory controlled by an embedded real-time operating system (SOS). Is 'RAID Level 7' any standard? Is cache memory controlled by an embedded real time operating system only available with RAID-7? > Data is block striped across the array and parity data is held on one or more > dedicated drives. The RAID 7 architecture is application independent and can > do large reads and writes as fast or faster than Level 3 while simultaneously > handling small reads or writes as fast or faster than Level 5. Are the above features unique for RAID-7? Do you have any official benchmark to proof the performance? Do you have figures to show the performance/cost ratio? > Unlike the earlier parallel RAID levels, RAID 7 decouples the host interface > from the physical drive organization through the use of a real-time operating > system, high performance controller and caching technology. Have you ever seen earlier RAID level products implementing such features? -- Chris Drauch ...................................................................... . c/o DRAUCH Ges.m.b.H. Tel. 43/ 3135/46387-0 . . Gewerbestrasse 5 Fax 43/ 3135/4638728 . . A-8071 Hausmannstaetten EMail cdr@xteam.co.at . ......................................................................