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Hi, just bought 7 1TB disks and are thinking of having them all on LVM, do you think it will hold?
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I believe you should be fine as long as your kernel is 2.6+. To my understanding it's the OS that would have any sort of constraints, not LVM2. If you'll be using the latest kernel and LVM2, the size limit should be 16 TB.
Also, I would suggest looking into RAID+LVM to mirror everything. If one disk fails, it's pretty tricky to recover everything.
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alright, but wouldnt mirror everything half the total capacity?
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Yes it would, but if one hard drive fail, recovery will suck a TON. By having everything mirrored, when one fails, nothing will be disturbed. You'll have eough time to get another hard drive to plug into the RAID and have everything mirrored back to that, and the cycle continues like that.
If it's not mirrored and one hard drive fails (and with more hard drives, there's a greater chance of at least one failing), the whole LVM will fail, and you will have to spend more time trying to recover your data.
Of course this is just a suggestion, you can do whatever you want. Essentially it comes down to would you want 7 TB, have one fail bringing all 7 TB down with it, or are you fine with 3 TB, and if any of them fails, you will be virtually unaffected?
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Ive been discussion this with a friend and Ive considered raid5 but I want to be able to extend the whole partition in the future so atm I dont know what todo really. Going for raid5 or lvm:/
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Yeah, the nice thing about lvm is the flexibility. But raid 5 is more secure....
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If you do a RAID 1 with LVM you get the security of mirroring along with LVM's flexibility.
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