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Down and Up (Aug 18 2009)
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Author | Message |
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Matt Lebofsky Send message Joined: 1 Mar 99 Posts: 1444 Credit: 957,058 RAC: 0 |
Outage day, usual drill: shut everything down, back up the mysql databases, fire off a science database backup as well while we're at it, compress the mysql tables (which get fragmented over the course of a week), and start everything back up. As far that was concerned, everything went smoothly. However, we were hoping to hook up a couple extra solid state drives to the new replica server mork. The plan was to put some mysql logs on these drives to help unload extra i/o from the rest of the database drives. We got all the hardware in place and hooked it up today, only to find the server BIOS wasn't seeing these drives. In the time allotted for this task I determined this was either due to (1) bad cables, or (2) motherboard weirdness. Since this is an Intel donated server with an "experimental" motherboard, all best are off. I did prove we could see the SSDs when I swapped cables around, but given the current setup we couldn't run normally like that (long story). In any case, I think we're fine without these drives for now, and may still go along with the plan to make mork the master next week. Other than that, radar blanking woes continue. I'm going to have Eric and Jeff look at my code tomorrow and point out what I'm doing wrong, if anything. I also hope to get some version of the NTPCkr page online tomorrow (he says with little fanfare). - Matt -- BOINC/SETI@home network/web/science/development person -- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 31013 Credit: 53,134,872 RAC: 32 |
Yeah! |
Johnney Guinness Send message Joined: 11 Sep 06 Posts: 3093 Credit: 2,652,287 RAC: 0 |
I also hope to get some version of the NTPCkr page online tomorrow (he says with little fanfare). Yipeee :) Cool, well done Matt, well done! Very exciting! We will try to go easy on you to give you time to get the bugs ironed out! John. |
DJStarfox Send message Joined: 23 May 01 Posts: 1066 Credit: 1,226,053 RAC: 2 |
Matt, I have a newer Core i7 motherboard, and the BIOS specifically states that it does not support SSD drives with the on-board controller. So, I assume if you could find some PCIe SSD controller that your plans could be done. |
C Send message Joined: 3 Apr 99 Posts: 240 Credit: 7,716,977 RAC: 0 |
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Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13855 Credit: 208,696,464 RAC: 304 |
Matt, What model is it? As far as hardware & software is concerned, a SSD is no different to a mechanical HDD- they both use the same interface. Any hardware/software that is SSD aware wouldn't allow the device to be defragmented, would provide support for SSD specific commands (eg Trim) and would disable caching for the device. But for all other instances a SSD/HDD are the same. Grant Darwin NT |
KWSN THE Holy Hand Grenade! Send message Joined: 20 Dec 05 Posts: 3187 Credit: 57,163,290 RAC: 0 |
Not to complain, or anything, but the Science Status page hasn't had contact with Arecibo for weeks, and the "signals already found" just show blanks... Also the overflow rate has been stuck at 4.4% for the same length of time... . Hello, from Albany, CA!... |
DJStarfox Send message Joined: 23 May 01 Posts: 1066 Credit: 1,226,053 RAC: 2 |
What model is it? Gigabyte UD3R-SLI I should also mention that the limitation of the SATA controller is stated for ACHI mode. I'm not sure if RAID mode has the same limitation. You would think: no problem running SDD, but I have not tried it. |
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