Date: Sun, 17 Apr 2005 14:39:13 -0400 From: Mikhail Teterin <mi+kde@aldan.algebra.com> To: freebsd-scsi@FreeBSD.org, msmith@mu.org, trhodes@FreeBSD.org Subject: speed of a ciss-based pseudo-disk Message-ID: <200504171439.14530@aldan>
next in thread | raw e-mail | index | archive | help
Hello! I have two U320 SCSI drives in a RAID-0 combination attached to HP's Smart Array 642. This is the dmesg: ciss0: <HP Smart Array 642> port 0xb800-0xb8ff mem 0xfea80000-0xfeabffff,0xfeafe000-0xfeafffff irq 29 at device 1.0 on pci4 da0 at ciss0 bus 0 target 0 lun 0 da0: <COMPAQ RAID 0 VOLUME OK> Fixed Direct Access SCSI-0 device da0: 135.168MB/s transfers da0: 69419MB (142171680 512 byte sectors: 255H 32S/T 17423C) Why is the reported speed only 135.168MB/s? All equipment is U320, so I'd expect the nominal speed of 320MB/s... Should I try a different cable? Mine says U320, although the terminator is marked U160 -- but 135 is not even 160... Any ideas? Also, what, if anything, are people using to monitor/control ciss-based arrays? HP offers software, but only for Linux and Windows... Thanks! -mi
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200504171439.14530>