Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Friday 19 November 2004 14:42, Jan Bruvoll wrote: > Hi there, > > I find your comment about S-ATA RAID controllers highly interesting - I > am struggling bigtime with getting anywhere near reasonable speeds using > a NFS - DRDB - 3Ware RAID chain. What do you mean exactly with "slow", > and would you be able to share any pointers on how to pinpoint why my > server pair is so painfully slow? > This "plain motherboard IDE controler" gives me 40MB/sec with this particular Seagate disk. I have seen IBM's ServRaid controlers giving me no more than 30MB/sec with a bunch of expensive SCSI disks. I have seen 3ware controlers staying below the 30M/sec mark.... But do not ask me details, I can not rememer... and please understand that comment in the context of an linear access pattern. A ServRaid controler with battery backed up RAM can vastly improve the throuhgput of transaction orientated IO load [database...]. -philipp -- : Dipl-Ing Philipp Reisner Tel +43-1-8178292-50 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Schönbrunnerstr 244, 1120 Vienna, Austria http://www.linbit.com :