Scott Silva wrote: > on 7-24-2008 6:51 AM Matt spake the following: >> Is there anyway to enable NCQ on CentOS 4.6? I guess anouther >> question is on a somewhat high activity mail server with a single >> SATA2 drive will it do any good? >> >> Matt > I doubt it will make a BIG difference, but you might be looking for > trouble running a highly active server of any kind on a single spindle. > I have a Communigate mail server that was running on a single WD 200 Gigs IDE (7200 RPM). Communigate uses separate mbox files for storage, very easy for backup / restore. I was monitoring it with SAR and there was very high level of IOWait, meaning the drive was having a hard time. Context: ======== 35 Users Running Outlook with Communigate MAPI Plugin 80 Gigs dataset (Total) Public folder with about 50 Gigs of stuff We replaced the server with a Tyan Transport TA-26. We put an Adaptec 3405 (4 ports Unified SATA/SAS adapter) and 4 Seagate 15K SAS 73 Gigs drives (RAID 10). No more iowaits even if now there is 50 users. I don't know about your context but running on a single drive is dangerous for data loss anyway. Hope this helped! Guy Boisvert, ing. IngTegration inc.