I run 9.0.4. I have FWB somewhere and will look at it (will it identify problem termination or anything solid?)
FWB Hard Disk ToolKit includes a benchmark tool, with which to measure your interface/drive performance. They are not diagnostics.
What does "swamping out" mean?
The Mac is fully capable of sending/receiving data across those SCSI busses at their full speed.
And "mixed modes", this mean that different HD's and/volumes are in HFS versus HFS+?
Different drive types. Eg: Putting a SCSI-1 drive on a SCSI-2 interface along with SCSI-2 drives. The interface has to "downgrade" itself to the performance characteristics of the slowest/narrowest drive.
HFS vs HFS+... HFS' allocation cluster gets larger as you increase the size of the partition (volume). This means an HFS volume will always be able to transfer (read or write) large files with fewer i/o operations. HFS+ uses a fixed cluster size of 512 bytes, regardless of volume size. So it tends to fragment faster, which slows i/o.
IOW, HFS volumes are more efficient for manipulating lots of large files. HFS+ should be used on volumes where you have mixed file sizes, or lots of smaller files.
What have I got? SCSI-2? (Standard ribbon cable 50 pins). http://www.everymac.com/systems/apple/powermac/stats/powermac_7600_200.html says just SCSI.
The internal bus is SCSI-2 Fast. The external bus is SCSI-1.
- Dan.
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