Any info about Iomega (IOM)? Message Board

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Non-Tech : Any info about Iomega (IOM)?

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To: FuzzFace who wrote (40805)	12/19/1997 1:22:00 PM
From: AreWeThereYet	Read Replies (1) of 58324

Edwin >> EIDE is not any CPU intensive than SCSI if bus-master driver is installed. SCSI will only have an advantage when multi-thread disk I/O is being used, it also have greater concurrency within the SCSI chain where EIDE allow concurrency I/O in only 2 channels. In addition, CPU utilization should have nothing to do with DTR rating except in rare situation (don't want to go into detail here). While I don't have a solid DTR figure for EIDE SparQ but I figure it will be around avg 2-3MB/sec. The sDTR (not the 16.6MB/s and 33.3MB/s) given by the manufacturer is achievable but you have to understand this is the raw performance of the drive and real-life performance is slower due to the OS overhead imposed by every I/O operation. Also another common mistake when estimating DTR is people forget every copy operation invoice a read and a write. If you installed the ATAPI devices on the same channel then copying a 10MB file will transfer 20MB of data. If they are installed in different channel or on a SCSI bus then performance will be significantly improved. aC

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