https://community.hpe.com/t5/general/smartarray-5300-weird-behaviour/m-p/3055392#M1864 I have a HP/Compaq SmartArray5300 controller sititng on a PC in a 32nit/33MHz PCI slot, with two Cheetah 10KRPM disks on it.<BR />Motherboard is a Gigabyte GA7VAX, OS is WindowsXP.<BR /><BR />When configured for RAID1, HD Tach measures 50MB/sec. This is correct.<BR />When configured for RAID0, it measures 40MB/sec instead of ~100MB/sec.<BR /><BR />The PCI is not saturated by anything at that point (to my knowledge), and since RAID1 works at 50MB/sec, this doesn't look like some SCSI bus limitation either.<BR /><BR />This happens both when the two drives are connected to the same channel and when they're connected to seperate ones.<BR /><BR />Help? Sat, 23 Aug 2003 18:27:10 GMT Miki_4 2003-08-23T18:27:10Z https://community.hpe.com/t5/general/smartarray-5300-weird-behaviour/m-p/3055392#M1864 I have a HP/Compaq SmartArray5300 controller sititng on a PC in a 32nit/33MHz PCI slot, with two Cheetah 10KRPM disks on it.<BR />Motherboard is a Gigabyte GA7VAX, OS is WindowsXP.<BR /><BR />When configured for RAID1, HD Tach measures 50MB/sec. This is correct.<BR />When configured for RAID0, it measures 40MB/sec instead of ~100MB/sec.<BR /><BR />The PCI is not saturated by anything at that point (to my knowledge), and since RAID1 works at 50MB/sec, this doesn't look like some SCSI bus limitation either.<BR /><BR />This happens both when the two drives are connected to the same channel and when they're connected to seperate ones.<BR /><BR />Help? Sat, 23 Aug 2003 18:27:10 GMT https://community.hpe.com/t5/general/smartarray-5300-weird-behaviour/m-p/3055392#M1864 Miki_4 2003-08-23T18:27:10Z