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... "Of course, the controller processor might be unable to handle such big data packs, however, the XOR-processor is hardly loaded at all in case of RAID 0, so that the data write speed is primarily determined by the controller cache speed and the HDDs performance." ....
"XOR-processor" - need only for RAID4 and RAID5. In this case XOR don't used.
Performance problem related saturation secondary PCI of 80303 I/O CPU worked with SiI3112 in 32bit/66MHz mode (max 264 bandwidth, real 200-220 MB/s minus seek time). 32 bit mode of SiI3112 create addition lost of performance during update 64 bit ECC memory word (read 64 bit, update 32, write 64) plus degradation bandwidth of internal bus.
"XOR-processor" - need only for RAID4 and RAID5. In this case XOR don't used.
Performance problem related saturation secondary PCI of 80303 I/O CPU worked with SiI3112 in 32bit/66MHz mode (max 264 bandwidth, real 200-220 MB/s minus seek time). 32 bit mode of SiI3112 create addition lost of performance during update 64 bit ECC memory word (read 64 bit, update 32, write 64) plus degradation bandwidth of internal bus.
[Posted by: ripe 
| Date: 02/13/04 04:52:13 PM]
| Date: 02/13/04 04:52:13 PM]
