tag:blogger.com,1999:blog-30238143.post8291773585270088357..comments2021-10-10T22:01:58.243-07:00Comments on Hacker's Delight: Lessons from the D945GSEJT ServerJonas Hagmarhttp://www.blogger.com/profile/12743191232921844639noreply@blogger.comBlogger23125tag:blogger.com,1999:blog-30238143.post-87117792431364661752011-05-26T02:21:10.605-07:002011-05-26T02:21:10.605-07:00Well, my system (D945GSEJT and two 1TB WD Green HD...Well, my system (D945GSEJT and two 1TB WD Green HDs) has been running 24/7 since I built it two years ago. The current uptime is one year, since that was when we moved to a new apartment. I think you will have no problems with your setup.Jonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-53468143373985182182011-05-26T02:13:12.147-07:002011-05-26T02:13:12.147-07:00Hello, I know its an outdated topic but i found no...Hello, I know its an outdated topic but i found no other related blog to turn to for help.<br /><br />Well i assembled my system with the <br />*Intel D945GSEJT<br />*WD 320GB 3.5" HDD<br />*12v 8CM internal case fan &<br />*An 12v 5amp external power brick for the power supply.<br /><br />Well im gona use this system like 24/7 non-stop for an extended period as an independant download server. Will i be having any problems with regards to heat or other problems because of prolonged use. Is the system stable??Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-30238143.post-1474482131560017162010-08-04T07:54:30.923-07:002010-08-04T07:54:30.923-07:00@Jason You're welcome! Great to hear that you&...@Jason You're welcome! Great to hear that you've got the computer set up and running well. My system is one of my best buys ever, acting as a Samba, SSH and web server, with now over a year of hassle-free uptime, and I'm sure you'll be just as pleased with your setup.Jonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-79874245620589569892010-08-04T06:59:19.098-07:002010-08-04T06:59:19.098-07:00I finally got everything in the mail and put toget...I finally got everything in the mail and put together and figured I'd give an update. The 60W brick so far has been more than enough to power the board, CF card and two 5400rpm 3.5" HDDs, just as you said. Everything is working very well, staying cool and performaing far better than I had expected from such a low-power machine.<br /><br />Thanks again for the input.Jasonhttps://www.blogger.com/profile/14288575887039927151noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-6092515174769811862010-07-21T23:28:22.064-07:002010-07-21T23:28:22.064-07:00@Jason My AC adapter is manufactured by Travla, an...@Jason My AC adapter is manufactured by Travla, and has model number SSA-0601S-1. I looked up the company on the web, and I think this page shows the AC adapter that I have: http://www.travla.com/product_d.php?id=0000000060 . Good luck, and let me know how things are working out for you!Jonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-24013090451847693112010-07-19T17:36:12.611-07:002010-07-19T17:36:12.611-07:00Oh awesome. 60W external brick it is then. What&...Oh awesome. 60W external brick it is then. What's the model number if you don't mind? I'm running two Samsung EcoGreens so hopefully they're comparable.<br /><br />Thanks again for the info.Jasonhttps://www.blogger.com/profile/14288575887039927151noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-41954307060184539462010-07-19T14:28:04.090-07:002010-07-19T14:28:04.090-07:00@Jason I have been running two 3.5" HDDs from...@Jason I have been running two 3.5" HDDs from the start (albeit WD 1TB Green, which are low on power consumption) with no problems whatsoever. The system has been constantly up for the last year. The current uptime is 30 days, and that is only because we moved a month ago :).Jonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-15126357228919210452010-07-19T13:21:30.158-07:002010-07-19T13:21:30.158-07:00I'd love to go with an external AC adapter, bu...I'd love to go with an external AC adapter, but I'm concerned that the 60W I'd be limited to would be enough to power the two 3.5" 5400rpm HDDs that I need in there, as well as a CF adapter which should be negligible.<br /><br />I see you're running a 2.5" and a 3.5", but that's a pretty big difference in spin-up power. I've yet to read a single forum post anywhere with someone confidently stating that they're running two 3.5" HDDs in this configuration with an external power brick.Jasonhttps://www.blogger.com/profile/14288575887039927151noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-81271471339575818482010-07-19T10:33:11.208-07:002010-07-19T10:33:11.208-07:00@Jason Thanks for reading my blog! For the record,...@Jason Thanks for reading my blog! For the record, I would not recommend shorting the pins, but if you go ahead and do it, it would be interesting to hear about your experiences. Shorting the pins was a brief experiment, which I aborted when I discovered that I was getting shocks from the case. I used a paper clip to short the pins, and I made sure the pin was not in contact with any part of the case or other components. I am not good enough with circuits to figure out why the shocks occurred, but I got them when the computer was turned off (but the shorted power supply was still on, which it should not be in a properly wired computer, where the motherboard controls the on/off state of the power supply). All in all, having an external power supply seems like a much wiser solution. Let me know how things are working out for you!Jonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-10346780812029297142010-07-19T09:04:38.335-07:002010-07-19T09:04:38.335-07:00I recently purchased this board and was curious ab...I recently purchased this board and was curious about your solution of shorting the pins on the 20pin connector, as I was considering doing the same thing.<br /><br />How well did it work? What did you use to short the pins? When you say you received electrical shocks, did you have the jumper accomplishing the short in contact with the chassis or what?<br /><br />Good info so far, thanks.Jasonhttps://www.blogger.com/profile/14288575887039927151noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-24937342024582039632010-01-08T03:33:02.226-08:002010-01-08T03:33:02.226-08:00Srdjan,
Thanks for your comment. As you read in m...Srdjan,<br /><br />Thanks for your comment. As you read in my post, I had also thought of using an internal PSU for my setup, but even if I tweaked the PSU to function with the board, the external 12V adapter was a better solution in all respects.<br /><br />As for your question regarding multiple drives, I suppose you've already read my post regarding this issue (http://jonashagmar.blogspot.com/2009/07/word-of-caution-when-connecting.html). I have had no problems with my setup, with two WD Green drives, so I guess your idea of having one 2.5" WD Blue drive and one 3.5" WD Green drive should work. With an additional 3.5", maybe it can work, since the power consumption at normal use is far less than the peak power consumption stated in the specification, but I don't know for sure. Please let me know how it works out if you decide to try it.Jonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-8871019862955685952009-12-13T06:08:40.737-08:002009-12-13T06:08:40.737-08:00Hi Jonas,
I've also chosen Intel D945GSEJT fo...Hi Jonas,<br /><br />I've also chosen Intel D945GSEJT for my WHS setup. <br /><br />Yesterday, me and a friend tried to assemble the rig, but we discovered that the board doesn't agree with the ATX PSU that I've bought. It's a shame, cause I've got an efficient Antec EarthWatts PSU (I went for the whole energy efficiency theme with this rig -- lo-power board, green disks etc.).<br /><br />Anyway... What I'm thinking now, after your post is: ditching the ATX PSU entirely, and going for an external 12V DC power supply. I have one 2,5" 160GB HDD for OS and one 3,5" WD Green 1TB HDD for data. <br /><br />External PSU should be enough to keep this combo running, and I should be able to add another WD Green HDD for storage if necessary. <br /><br />The power calculation is this...<br /><br />If I take regular-load operating power at normal read/write HDD load (nominal values), the calculation is this: approx 10W for the mobo, 2.5W for the 2.5" HDD, 5.5W for the 3.5" HDD. That adds up to 18W for 2 HDD setup and 23.5W for 3 HDD setup. <br /><br />But.... There's a dilemma....<br /><br />What made me think is this: WD Green spec sheet says it draws 1.671A peak current, and at 12V that's approx 4 times its operating power at normal R/W load.<br /><br />If I consider that, max load estimate is this: mobo draws 12.5W under max load (this is from the Intel's manual), 3.5" WD Green HDD draws max 20W (based on 12V and 1.671A peak current -- WD tech specs), 2.5" WD Scorpio Blue HDD draws max 12W (estimate, based on R/W load of 500mA at 5V multiplied by the factor of 4 -- assuming peak values on WD Scorpio relate to R/W power values the same was as they do with the WD Green).<br /><br />This means that I'm looking at peak load of 44W for 1 x 2.5" + 1 x 3.5" combo. If I add another 3.5" HDD this goes to 64W peak power. <br /><br />Now, I'm aware that the peak load can probably occur only during startup, and that it can last up to a second or so... <br /><br /><br />What do you think? How does your system behave so far? <br /><br />Thanks<br />SrdjanAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-30238143.post-26692769376158302102009-08-05T23:25:17.095-07:002009-08-05T23:25:17.095-07:00I guess you read the post about connecting multipl...I guess you read the post about connecting multiple drives (http://jonashagmar.blogspot.com/2009/07/word-of-caution-when-connecting.html). In light of that, I would definitely go for the ATX PSU solution when connecting four drives.<br /><br />Whether or not you need a PCI riser depends entirely on the case you are using. With my case, a PCI riser is needed, and the use of a PCI card prevents the use of two hard drives. My guess is that with a larger case, that can fit four drives and a decent power supply, chances are that you don't have to use a PCI riser.<br /><br />Thanks for reading, and good luck with the build!Jonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-38763095084277494092009-08-05T21:10:45.705-07:002009-08-05T21:10:45.705-07:00Most interesting - I'm also thinking of this b...Most interesting - I'm also thinking of this board for NAS duty - but will be needing at least 4 drives. Is a PCI riser is required in addition to the PCI SATA card?<br /><br />Looks like I'll need to do the ATX supply trick to get the wattage needed for 4 drives on spinup though.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-30238143.post-83157406881851814002009-07-15T13:03:52.507-07:002009-07-15T13:03:52.507-07:00Next line in my ToDo list is - ordering this board...Next line in my ToDo list is - ordering this board ;)<br /><br />M PAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-30238143.post-90626109451267768922009-07-15T11:38:52.870-07:002009-07-15T11:38:52.870-07:00Those hdparm tests were a nice tip, thanks! I got ...Those hdparm tests were a nice tip, thanks! I got about 600 MB/s for cached reads and 100 MB/s for buffered reads. I also remembered that when I resynced the two drives of the RAID1, the transfer rate was 70 MB/s, which gives some indication about the write speed. So I guess then it's pretty clear that the 100 Mb/s switch is what limits the transfer rate to and from the server.Jonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-70985208554119039892009-07-15T09:36:46.855-07:002009-07-15T09:36:46.855-07:00sudo hdparm -tT /dev/sda"driveletterwhatisiny...sudo hdparm -tT /dev/sda"driveletterwhatisinyoursystem"<br /><br />75w/87r is good result in 100 Mb/s lan ;)<br /><br />M PAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-30238143.post-55486366132752132642009-07-15T07:10:19.041-07:002009-07-15T07:10:19.041-07:00That was 7.5 MB/s writing. Reading, it was a bit h...That was 7.5 MB/s writing. Reading, it was a bit higher; 8.7 MB/s. Like I said, I don't know where the bottleneck is; if I would get higher speeds with a Gigabit switch or if the hard drives set the limit. Hope this helps.<br /><br />Best Regards,<br />JonasJonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-54199258763440419682009-07-14T08:59:34.969-07:002009-07-14T08:59:34.969-07:0075 MB/s - reading from or writing to "Home se...75 MB/s - reading from or writing to "Home server" ?<br /><br />M P<br /><br />PS SRY - my native language is not an english ...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-30238143.post-86555875423842127162009-07-14T05:35:31.621-07:002009-07-14T05:35:31.621-07:00The board itself does not have a PSU. Instead, you...The board itself does not have a PSU. Instead, you can connect either a 12VDC source on the back panel, or a 12V 4-pin ATX connector internally to the board (see my post). I currently use a 60W AC-DC adapter, which is enough even for maximum load (board ~20W, hard drives 2*10W, memory 5W). The hard drives are connected to the power connector on the board.<br /><br />For a 4 HDD setup, I guess you would need a SATA contoller card (~15W?, and perhaps a PCI riser card?), since you only have two SATA ports on the board. The two extra disk drives would consume about 10W each. I've seen AC-DC adapters up to 150W. If there is any risk of frying the board with such high wattage I don't know - I haven't seen anything about it in the product guide at least (a highly recommended read before you start building, link in the blog post).<br /><br />Another possibility is to use the 4-pin ATX power connector, and connect the hard drives to the power connectors of the mini-ITX PSU directly (read the note about this in the post though). In that case I can't see any problems with the setup.<br /><br />Best Regards,<br />JonasJonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-61308275591732641602009-07-14T03:25:59.917-07:002009-07-14T03:25:59.917-07:00Hey! I'm thinking of buying the same board for...Hey! I'm thinking of buying the same board for NAS duty, but i want to stick in 4 HDDs in a RAID-5 setup. Do you think the board's PSU can handle the extra load of four drives?<br /><br />Cheers!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-30238143.post-54764085549540256282009-07-14T02:36:52.830-07:002009-07-14T02:36:52.830-07:00I'm not sure exactly what you mean. I haven...I'm not sure exactly what you mean. I haven't experienced any problems with the LAN connection since I installed the correct driver for the board NIC. Doing a very unscientific test this morning, the transfer speed was about 7.5 MB/s (I have a 100Mb/s LAN, and there might be other bottlenecks). If you have a more specific question, please let me know.<br /><br />Best Regards,<br />JonasJonas Hagmarhttps://www.blogger.com/profile/12743191232921844639noreply@blogger.comtag:blogger.com,1999:blog-30238143.post-22105580557915370072009-07-13T05:06:01.559-07:002009-07-13T05:06:01.559-07:00Hi
Can You comment a file transfer speed over lan...Hi<br /><br />Can You comment a file transfer speed over lan in home network?<br /><br />M P from land called eart ;)Anonymousnoreply@blogger.com