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Old 07-14-2011, 08:30 AM   #1
delevel
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15TB on hardware raid6 install recmondation


Going to setup a FTP server But I am not sure what is the best way to setup the partistions?
Should I use LVM ontop? I do have a fear of running out if diskspace on boot partions So I usaly only use one partion for all insted of split it up.
But My fear then is that if I a disk error I lose all data but if I have a setup with raid6 with 10x disks and 2x HotSpare I should be good?

Going to install Lenny Squeeze with ProFTPD to replace my old Debian Lenny with only 4x disk that did have a disk crash on one disk and the other on in the set was about to go too so I was just lucky!

Anyone have some good recommendations for me?
My goal is to have it as stable as posibel with out too mutch hassel.
 
Old 07-14-2011, 01:06 PM   #2
MensaWater
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You can do both. Make it a RAID setup then layout LVM on top of the meta device you create.
 
Old 07-14-2011, 07:53 PM   #3
Dutch Master
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IMO a RAID 6 for an FTP server is quite overkill. RAID 5 will do just fine. Do note that 100% reliability and availability cannot be guaranteed unless you actually make the whole chain redundant: from ISP to routers, switches and actual servers, AKA the entire hardware chain. The question you'd have to ask yourself is: "how much am I willing to spend for what level of availability?" Unless you're in a corporate environment where a simple FTP server is absolutely mission-critical, most will not accept the cost of 100% failover for what is essentially a simple service. And even if you're in a situation where said FTP service is mission-critical, my advise would be to rethink that strategy to become less dependant on a single point of failure...

You do realise that 15 TB is quite a lot, and so is 12 disks in a RAID. Dunno what you're planning to use it for (downloading the internet perhaps? ) but my advise would be to start significantly smaller, in a RAID 5 setup, with 3 disks and a single hot-spare with LVM on top. Configure the array thus that the remaining disks are also spares, then as time and diskspace in use dictate, add more storage to the LVM after adding the corresponding disk to the array. Webmin does a good job of managing RAID, no experience with LVM though...
 
Old 07-15-2011, 01:50 AM   #4
delevel
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Yeah it is mission-critical for my company so. The costumers upload GB of images eatch today they use up about 0.5 TB But they are going to start addning alot more so I like to be a bit prepard. As I rent space for a full rac I have no controll over ISP or the router So I can't do anything about that. I love to have a Failover but I don't even know where to start or have the budget to ask for one more server like this.
 
  


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