Thursday, September 06
Mari
New server being deployed now. 12 cores, 128GB RAM, 12TB raw SSD (8TB RAID-6), unmetered gigabit uplink. Might simplify and go RAID-10. Might not.
New server being deployed now. 12 cores, 128GB RAM, 12TB raw SSD (8TB RAID-6), unmetered gigabit uplink. Might simplify and go RAID-10. Might not.
I will be smooshing everything together onto this server in the next couple of months. Everything production will be on here with daily snapshot backups.
This will be very nice. No more sloooow disk drives, no more other-peoples-VMs.
Stretches the budget a bit, but cheaper than the servers it will replace.
Update: 300k IOPS on random buffered writes, 165k IOPS on random reads, only 14k IOPS on random direct writes. Performance on random writes is limited by the software RAID-6 driver, not by the hardware, so almost any other config should do better. Since our hosting company now offers one-click reformat/reinstall for bare-metal servers (very nice!) I'm going to try RAID-5 and RAID-10 and compare. This server has a ton of space; I spent an extra $40 per month to get 6 x 2TB instead of 4 x 2TB, which is a bargain since these drives run about $400 each. So RAID-5, 6, 10, even 50, all will work fine, let's find the best.
And for that matter, our current mee.nu server is running a single 1TB SSD. Doesn't mean RAID-0 is a good idea, and I'd never do it with hard drives, but with SSDs... Still no. 
Update: RAID-10 build is going to take 8 hours? Okay, whatevs. Back to work while that runs.
Update: With RAID-10 I'm getting 26k random direct writes at QD=4 and 33k at QD=8 while the RAID sync is still running. That's certainly an improvement.
Posted by: Pixy Misa at
08:04 AM
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