Re: [ceph-users] Consumer Grade SSD Clusters

2015-01-27 Thread Christian Balzer
Hello, As others said, it depends on your use case and expected write load. If you search the ML archives, you will find that there can be SEVERE write amplification with Ceph, something to very much keep in mind. You should run tests yourself before deploying things and committing to a hardware

Re: [ceph-users] Consumer Grade SSD Clusters

2015-01-27 Thread Quenten Grasso
Hi Nick, Agreed, I see your point of basically once your past the 150TBW or whatever that number maybe, your just waiting for failure effectively but aren't we anyway? I guess it depends on your use case at the end of the day. I wonder what the likes of Amazon, Rackspace etc are doing in the w

Re: [ceph-users] Consumer Grade SSD Clusters

2015-01-24 Thread Wido den Hollander
> Op 24 jan. 2015 om 10:13 heeft Quenten Grasso het > volgende geschreven: > > Hi Everyone, > > Just wondering if anyone has had any experience in using consumer grade SSD’s > for a Ceph cluster? > > I came across this article > http://techreport.com/review/26523/the-ssd-endurance-experim

Re: [ceph-users] Consumer Grade SSD Clusters

2015-01-24 Thread Nick Fisk
Hi Quenten, There is no real answer to your question. It really depends on how busy your storage will be and particularly if it is mainly reads or writes. I wouldn't pay too much attention to that SSD endurance test, whilst it's great to know that they have a lot more headroom than their of