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Re: [linux-lvm] Building up a RAID5 LVM home server (long)[0x05B52F13]

Remember, this is for a HOME SERVER, not a corporate database. Assuming he doesn't have Gigabit Ethernet, and assuming the CPU in his server is reasonably beefy (at least a gigahertz), the extra speed in RAID 1 or 10 will be entirely wasted. For almost any home application, RAID5 is going to be exactly what folks want.... cheap, reliable, and more than fast enough to saturate the wire.

Doing RAID 10 properly would cost a great deal for disks, a lot for motherboards with proper, non-PCI choked Gigabit ports (need them on both server and client, mind you), and would take a significant amount of learning on the part of the home admin to get really running properly.... how many people want to learn about jumbo frames and cat5e wiring to set up a video server that will only be serving one or two videos at a time?

Yes, your solution would run faster in some circumstances, but it would be a LOT more expensive. After investing all that money, he'd see it run somewhat faster on writes, and the server wouldn't be speed-impaired during a rebuild. But he's a HOME USER. It doesn't MATTER if the server is slow for a night or two. Everything will be sluggish for a couple nights, once a year or so. So what? Since when is this is worth spending a couple grand to avoid?

It would often make sense for a business to do that, but from a home user perspective, it seems like following this specific advice would be a gigantic waste of money.

For nearly all home users with reasonably modern hardware, RAID5 is the right way to go for servers, at least for now.

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