Oh, just as a reminder, you can do an external journal on ext3 and ext4 as
well as xfs.
On Sat, Mar 6, 2010 at 9:37 AM, dan <[email protected]> wrote:
>
>
> On Sat, Mar 6, 2010 at 1:07 AM, Eric Persson <[email protected]> wrote:
>
>> dan wrote:
>> > If you are using EXT3 or XFS then I suggest you use an external journal.
>> > get yourself a small SSD or a small 15RPM disk. You could use a regular
>> > disk if you like but the faster the better.
>>
>> This would work with a fast usbstick as well? With quite good results I
>> expect, and not much problems if it wears out, and perhaps cheaper than
>> a ssd. Or could I put in 4 usbsticks and create a raidset from it, and
>> store the journal on there? ;) Perhaps stupid, but worth a shot. Depends
>> on what you're using the backupserver for i guess. SSD is probably more
>> reliable for a bigger shop.
>>
>>
> USB is the weak spot here. You want something on SATA (or IDE, SCSI). You
> could certainly try it but USB is pretty weak on IO performance so I
> wouldn't know if it would help performance or not. Try to raid up a few
> sticks BUT make use you put them on different controllers. A modern USB
> flash drive will see a USB bus speedlimit if you put two devices on 1 bus.
>
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