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Tron Video Dating Service
- Wednesday, December 08 2010 @ 09:06 PM UTC
- Contributed by: Dan Stoner
- Views: 3,726
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LSI MegaRAID - megacli
- Monday, December 06 2010 @ 02:21 AM UTC
- Contributed by: Dan Stoner
- Views: 370,169
I recently gained my first experience with the infamous MegaCli command line configuration utility for LSI-based RAID controllers. This utility apparently also works on re-branded LSI cards from Dell (certain PERC cards) and other vendors. Our New servers from iXsystems included LSI 9260 MegaRAID adapters. These servers run FreeBSD and LSI makes a binary available for this operating system. I later noticed that megacli is also in the FreeBSD ports tree, appears to be the same version as what I downloaded from LSI, but I did not test it. The megacli utility is also available in standard repos for many Linux distributions.
I wanted to verify that the RAID controller would start an automatic rebuild. I popped out one of the drives and the very loud alarm started screaming. I waited a little bit and put the drive back in. The alarm continued and the array did not start rebuilding. It turns out that the controller has some self-defense against someone mistakenly re-inserting a bad drive so it won't start an automatic rebuild on a drive that was just disconnected and reconnected. Drives that were previously in an array are marked as "Foreign" if they are reinserted. Replacing a drive with a true spare drive off the shelf triggers an auto-rebuild just fine (unless the adapter's auto-rebuild property has been altered).
I have noticed that the binary I downloaded from the LSI web site is mixed case, whereas the version included in many distrubutions / built from source tends to use all lower-case (megacli). Be aware of this if you copy/paste commands from below.
So back to the screaming alarm...
Here is the magic command to silence the alarm:
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Unknown Stoner at Disney
- Thursday, December 02 2010 @ 01:24 AM UTC
- Contributed by: Dan Stoner
- Views: 4,805
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six months of running
- Wednesday, December 01 2010 @ 01:28 AM UTC
- Contributed by: Dan Stoner
- Views: 2,757
I am now generally running 15 - 35 miles per week which includes at least one long run if possible (10 - 15 miles). I can only manage to squeeze in 3 or 4 runs per week due to busy family schedules.
Thanks to dailymile, I can show you a nice graph of my weekly mileage totals:
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New servers from iXsystems
- Tuesday, November 30 2010 @ 04:19 PM UTC
- Contributed by: Dan Stoner
- Views: 23,628
We ordered the 2U Jupiter server which is built on a SuperMicro platform. I wanted 8 drive spindles for storage system performance and 3.5-inch drives to keep overall price low. Some vendors have moved their 2U servers exclusively to 2.5-inch drives or their high performance SAS drives are obscenely expensive, so iXsystems met our specs and also came in a few thousand dollars cheaper per server than the larger vendors such as Dell or HP.
Initial casual benchmarking of the storage system and processor indicate that the machines are very fast. Disk i/o performance is fabulous. I have not yet found a load test I can throw at the machines to make them unresponsive.
Here are detailed specs:
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Installed the SocialShare geeklog plugin
- Tuesday, November 30 2010 @ 03:42 AM UTC
- Contributed by: Dan Stoner
- Views: 9,977
Available from SocialShare Plugin.
I had some trouble with this install due mostly to documentation issues.
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