Am 24.04.2008, 21:48 Uhr, schrieb Frank Wille <frank%phoenix.owl.de@localhost>:
Hi! The servers should have RAID support for 2.5" disks, 1 GBit ethernet and low power consumption. And they have to be powerful enough to run as a(Apache/Zope) web-server, (Postfix) mail server and (MySQL) data base server at the same time.Does anybody have a suggestion for such a board, which is proven to run reliable under NetBSD 3.1 or 4.0? Thanks in advance!
I also had considered special low-power hardware components but stuck with the mainstream: So I went ahead and got me a system with an Intel DG965WHMKR MoBo (now 150€)with Core2Duo E6300 (now less than 170€), 1GB KINGSTON (PC2-4200 CL4 240) and and plugged 6 Seagate ST3320620AS 3,5" SATA drives - without hardware RAID controller. That MoBo connects 6 SATA drives and unless you buy an active RAID controller with an extra processor (more than 400€) the CPU will have to do all the work anyway. So I chose NetBSD 4.0-XEN with Raidframe, it supports AHCI on ICH8 southbridge (although no native command queueing yet). This hardware runs a Fileserver with RAID5 over 5 drives, a Webserver and occasionally WinXP. It runs like a charm, makes less sound than a household refrigerator, and here's some performance figures (Bonnie): -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 32SPerSU 2000 116032 80.7 152952 74.0 32924 16.2 102195 79.7 217660 50.8 118.7 0.7 16SPerSU 2000 118189 83.7 119787 58.7 48955 27.4 85376 70.3 164494 55.3 144.3 0.8 Xen_AHCI 2000 78192 58.5 99477 38.8 41056 14.3 96651 69.9 202133 42.0 76.8 0.6 i386pari 2000 105603 80.8 156700 69.9 43398 19.0 103888 77.6 287902 57.5 232.7 1.2 i386_wd0 2000 63965 38.6 67591 12.4 31859 9.2 68638 48.1 69201 9.9 216.7 1.0 i386raid 2000 123453 84.6 165556 77.5 44328 20.0 123687 86.7 279682 54.2 227.4 1.0 DomU 100 10278 8.7 14885 6.5 26533 8.7 86446 56.8 640648 100 16063.3 45.4 DomU 2000 11038 9.5 25495 11.8 13203 5.3 46993 39.7 49373 11.8 77.3 0.5
You're welcome to run tests and benchmarks on my system if you show me how to install the services mentioned.
Please consider: when a hardware RAID controller becomes defective, your data will be unavailable until you install a 100% compatible spare. With software RAID you can port your drives to an other machine running the same OS. I tried this successfully with WS2K3 and Netbsd 3.1-i386.
Kind Regards Thomas Feddersen