Hi Doug - you're up early.
I'm not suggesting that S3 is a VOSpace-killer, just that it's one
possible VOSpace backend (of several) and the fact that it costs money
isn't necessarily a problem.
John
Doug Tody wrote:
> The fundamental thing here is that we need to control where the data
> is stored, as we often need to colocate storage and computation.
> Hence using the commercial S3 service is not very interesting.
> As with VOSpace itself, the interesting thing to look at with S3 is
> the access interface. The physical storage will usually be located
> where we want to do the computations.
>
> Rather than think of VOSpace as a mere storage manager, one might think
> of it as a Grid version of distributed shared memory. We take some
> storage near where the computation will take place, and put a VOSpace
> interface on it so that we can move data in and out asynchronously.
> How the storage is physically implemented can vary greatly depending
> upon what we are doing. Computation is done on a per-user basis,
> so VOSpace is always managing data on behalf of some user. The real
> archive/Grid storage managers are used for more permanent storage
> of data.
>
> - Doug
>
>
> On Fri, 18 Aug 2006, John Taylor wrote:
>
>> I'm not sure that this is necessarily the end of the world. We
>> already pay for hardware, ongoing maintenance, staff time,
>> supercomputing resources....etc
>> If an organisation decided it was more cost-effective to outsource
>> this to Amazon or anyone else, why not?
>>
>> Christophe.Arviset-at-esa.int wrote:
>>> Roy
>>>
>>> Apparently, one has to pay (both for storage and for transfer!) to
>>> use Amazon
>>> S3:
>>>
>>> "Pricing
>>> Pay only for what you use. There is no minimum fee, and no start-up
>>> cost. $0.15 per GB-Month of storage used. $0.20 per GB of data
>>> transferred."
>>>
>>> There might be technical things to learn from them, but I'm not sure
>>> how this
>>> pricing scheme would fit for the VO.
>>>
>>> Cheers
>>>
>>> Christophe
>>>
>>>
>>>
>>>
>>> Quoting Roy Williams <roy-at-cacr.caltech.edu>:
>>>
>>>
>>>> I wonder what is common and what is different between Amazon S3 and
>>>> VOSpace?
>>>> Roy
>>>>
>>>> Begin forwarded message:
>>>>
>>>>
>>>>> From: "Alex Szalay" <szalay-at-jhu.edu>
>>>>> Date: August 17, 2006 12:49:14 AM PDT
>>>>> To: "'Roy Williams'" <roy-at-cacr.caltech.edu>, "'Alex Szalay'"
>>>>> <szalay-at-jhu.edu>
>>>>> Subject: Amazon VOStore?
>>>>>
>>>>> http://www.amazon.com/b/ref=sc_fe_l_2/104-7699424-9544708?
>>>>> ie=UTF8&node=16427261&no=15879911&me=A36L942TSJ2AJA
>>>>>
>>>>> We should look at the WS specs.
>>>>>
>>>>> --Alex
>>>>>
>>>>>
>>>> California Institute of Technology
>>>> 626 395 3670
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>> ----------------------------------------------------------------
>>> This message was sent using IMP, the Internet Messaging Program.
>>>
>>>
>>
>>
>>
>
-- ------------------------------------------------------------------------ AstroGrid/VOTech & Institute for Astronomy, Edinburgh Skype:johndavidtaylor <skype:johndavidtaylor?chat> ------------------------------------------------------------------------Received on 2006-08-18Z13:10:23