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From Tupshin Harper <>
Subject Re: Commit log on USB flash disk?
Date Sat, 16 Nov 2013 16:17:50 GMT
It's conceivable that one of the faster USB 3.0 sticks would be sufficient
for this. I wouldn't exactly call it an "enterprise" configuration, but
it's worth considering. Keep in mind that if you are comfortable using your
RF for durability, you can turn off durable_writes on your keyspace and not
write to the commitlog at all.

On Sat, Nov 16, 2013 at 11:05 AM, Philippe <> wrote:

> Hi david, we tried it two years ago and the performance of the USB stick
> was so dismal we stopped.
> Cheers
>  Le 16 nov. 2013 15:13, "David Tinker" <> a écrit :
> Our hosting provider has a cost effective server with 2 x 4TB disks
>> with a 16G (or 64G) USB thumb drive option. Would it make sense to put
>> the Cassandra commit log on the USB thumb disk and use RAID0 to use
>> both 4TB disks for data (and Ubuntu 12.04)?
>> Anyone know how long USB flash disks last when use for a write heavy
>> workload like this?
>> Please tell me if this is a really bad idea.
>> Our alternative is to use one 4TB disk for commit log and one for
>> data. Of course this will give us only half the space.
>> Thanks
>> David

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