What is the difference between btrfs and zfs? I have seen that zfs seems to be quite popular with NAS / file server builds.
Sent from my iPhone
On 23 Jul 2013, at 23:02, "Michael Daffin" <james1479@???> wrote:
> You can also use the btrfs filesystem to do the same thing, which ext4 can be upgraded to in place (ie without reformatting) and then other drives can be added to the btrfs filesystem.
>
> However, with both of these solutions you are increasing the risk of losing all of your data as if one drives fails. I would consider looking at creating a raid array, it will require more disks*, but has the advantage that you wont lose any data if one drive fails (you just have to replace the drive) but the disadvantage of not being able to use all of the space on all the drives.
>
> *You need 2 disks for raid1, full mirror, but only have the usable space of one of the disk, or 3 disks for raid 5, which gives you the usable space of two disks (you can use 4 or 5 disks with raid 5 and still only lose one disk worth of space).
>
> Raid is at least worth considering as the more disks you add to your setup, the more likely one will fail and the larger your collection of data, the harder it is to recover it all.
>
>
> On 23 July 2013 20:58, Ally Biggs <bluechrome@???> wrote:
>> If you google lhammonds ubuntu server tutorial he walks you through the process of setting up LVM on a clean install. He then teaches you how to add a secondary hard disk and how to extend the volumes all done through the Cli of course :)
>>
>> Very easy to follow tutorial makes LVM a walk in the park.
>>
>>
>>
>> Sent from my iPhone
>>
>> On 23 Jul 2013, at 20:53, "James Courtier-Dutton" <james.dutton@???> wrote:
>>
>>> On 23 July 2013 20:47, Robin Wilson <robin@???> wrote:
>>>> Hi,
>>>>
>>>> I've got a home server, running Ubuntu, which has a large hard drive on which I store photos, videos, music etc, which is mounted at /files. Unfortunately I'm running out of space on that drive, and am just about to purchase an extra drive. My question is:
>>>>
>>>> Is there a way to 'combine' these drives in some way so that they both appear under the mount point /files, and where the data is actually stored is transparent?
>>>>
>>>> Obviously I could put all of my photos and music on the old drive, and all of my videos on the new drive, and mount them separately - but from previous experience I've found that gets very difficult very quickly, as drives fill up and you end up with categories split between drives.
>>>>
>>>> Does anyone have any ideas for how to go about this? Ideally I'd like whatever method it is to not require completely wiping my current drive - it would be possible (if I can find a friend with an empty 2Tb external hard drive that I can borrow), but it'd be a bit of a pain.
>>>
>>> Google "lvm". A logical volume manager.
>>> If your existing data is already on a LVM you can expand it to fit two disks.
>>> If your existing data is not on LVM, you could make the new HDD use LVM, copy all the data from the old to the new drive, and then wipe the old drive and put LVM on it.
>>>
>>> Kind Regards
>>>
>>> James
>>>
>>
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>
>
> --
> Michael Daffin <james1479@???>
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Web Interface:
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LUG URL:
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