Systems Administration

How should I protect my dedicated server – backups, or RAID?

In the rush to get by with daily life, often we don’t think much about how our data is stored. But as anyone who has experienced a hard drive failure can tell you, once you’ve lost your data, you wish you had done something to keep it safe to begin with. So often times, we

Troubleshooting high linecard CPU use / exhaustion on Brocade MLX and MLXe routers

Today we’re going to be talking about a poor design decision in the Brocade MLX and MLXe series routers that can lead to CPU exhaustion on your router line cards. Overall we’re very happy with the Brocade MLX. After all, every routing platform has its quirks, so one small problem that is easily solved is

CloudFlare agrees: Disk performance is improved when you get rid of hardware raid

I know this article is a little old, but I wanted to bring it up as it raises an interesting point. We’ve had a few articles here about hardware raid, detailing when we think it’s a good idea, and when it’s a waste of money (or worse). In general, if you’re looking for “big DD

Dell C6100 BMC / IPMI Mac address all zeros after update? 00:00:00:00:00:00 — Script fix solution

Some of you may have noticed the Dell C6100 on ebay for a pretty cheap price. 4 servers in a single 2u chassis for as little as $800. Great deal right? I had a lot of trouble getting the IPMI / BMC firmware updated on these in the first place. After getting it upgraded, the

Real world performance of Brocade Foundry FESX-448-PREM — CPU exhaustion

In case you’re still using the Brocade / Foundry FESX-448-PREM for doing routing on your network, I thought I would share some of the performance limitations we’ve seen on that platform. We’ve long since upgraded our network to use newer and more powerful Brocade MLX routers, but wanted to share our experience so others could

e1000e NIC link failure / x9scm / x9scl / patch fix for Centos

If you’ve had problems with the nic driver failing on x9 / x10 supermicro motherboards with the intel e1000e NIC, we have a fix for you. Centos 6 on X9 motherboards (x9scl / x9scm) seems to have the most problems, but other motherboards and OS’s are potentially affected as well. There are a lot of

Update: Hardware vs Software RAID: The great debate.

Hi Everyone, If you recall our previous article Hardware raid or software raid? Our take on the great religious debate, we made the case that hardware raid served virtually no purpose, and software raid was better in all important ways. Although we still find most of the information in that article to be true, we are

How to Edit Ram Allocation on a Xen VPS under Solusvm When SolusVM Won’t Update Configuration File

Hi Everyone, If you’re like me, you’ve had problems in the past with SolusVM running Xen, and some of them can be a little irritating and difficult to track down. There’s one particularly confusing problem whose solution I would like to share with you today. Who is affected? Anyone who wants to change the amount

Hardware raid or software raid? Our take on the great religious debate

I get asked this question a lot: “Do I need hardware raid, or is software raid good enough?” You may have noticed I/O FLOOD only offers software raid, so it will come as no surprise to you that we think software raid is “good enough”. What might surprise you however, is that we believe that