<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">I'll go by sata,<DIV>for 4 disks on ata you'll be using two on each ide bus, </DIV><DIV>and that is supposed to delay writing cycles,</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><BR><DIV><DIV>On Dec 1, 2006, at 2:40 PM, Tim Emerick wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><DIV style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>I've been contemplating converting my 2 disk raid1 to a 4 disk raid5. Couple of questions to those in the know.</DIV> <DIV> </DIV> <DIV>Machine: Intel P4 1.5Ghz Stepping 02, 512meg ram, 2-WD 80GB UDMA/100 raid1 mirror using debian testing.</DIV> <DIV> </DIV> <DIV>Usage: General office/campus use as a samba file server. About 150 PC's connected to it with maybe 20-30 users max performing simultaneous read/writes. Activity is mostly database type with small read/writes. Others are accessing office type documents.</DIV> <DIV> </DIV> <DIV>With a 4 disk raid5 array (safety matters ya know). Will I notice a huge difference in read/write speed from what I have now or just nominal?</DIV> <DIV> </DIV> <DIV>Does SATA vs ATA make a big difference?</DIV> <DIV> </DIV> <DIV>I'm pretty sure the bottleneck at this point is the sluggish disk access but how can I verify that it's the disks and not a saturated network connection? I've been using a utility called bwm-ng to monitor bandwidth and have not seen it come close to the 100mb/s that my NIC is rated.</DIV> <DIV> </DIV> <DIV>Thanks for any insights.</DIV> <DIV> </DIV> <DIV>Tim Emerick</DIV> <DIV> </DIV></DIV><BR> <HR size="1">Want to start your own business? Learn how on <A href="http://us.rd.yahoo.com/evt=41244/*http://smallbusiness.yahoo.com/r-index">Yahoo! Small Business.</A><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">nmglug mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:nmglug@nmglug.org">nmglug@nmglug.org</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://www.nmglug.org/mailman/listinfo/nmglug">http://www.nmglug.org/mailman/listinfo/nmglug</A></DIV> </BLOCKQUOTE></DIV><BR></DIV></BODY></HTML>