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GRIDPP-STORAGE  October 2006

GRIDPP-STORAGE October 2006

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Subject:

Re: pre-GDB storage classes meeting

From:

Olivier van der Aa <[log in to unmask]>

Reply-To:

Olivier van der Aa <[log in to unmask]>

Date:

Mon, 2 Oct 2006 11:55:13 +0100

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (163 lines)

Greig A Cowan wrote:

Hi Greig,

I see on the agenda that quotas will be discussed. Will the draining 
also be on the topic ? Maybe this is not srm related.

Cheers, Olivier.

> Hi everyone (apologies to those who get this twice),
> 
> I am going to attend a meeting next week [1] that will discuss how the SRM
> 2.2 storage classes should be implemented at Tier-1 and -2 sites (i.e.  
> if any special configuration of the SRM and storage hardware is needed
> beyond what is already deployed). For those who haven't heard of the
> storage classes before, they can be summarised by the terms:
> 
> Tape1Disk1
> Tape1Disk0
> Tape0Disk1
> 
> which represent how the LHC experiments want to be able to store and 
> manage their data. 
> 
> In the UK, Tape0Disk1 will likely be the only one to affect the Tier-2s.
> 
> Jeremy suggested that I ask for input from people before the meeting so 
> that we can ensure all relevant issues/concerns are raised. Does anyone 
> have any questions that they would like me to raise on their behalf? The 
> meeting is on Tuesday afternoon.
> 
> Cheers,
> Greig
> 
> [1] http://agenda.cern.ch/fullAgenda.php?ida=a058490
> 
> 
> 
> 
> 
> On Thu, 21 Sep 2006, Coles, J (Jeremy) wrote:
> 
>> Thanks Greig
>>
>> I would attend since I am going to the GDB but I have to be at RAL in
>> the morning. Please do canvass others on the list for input prior to the
>> meeting.
>>
>> Cheers,
>> Jeremy
>>
>>> -----Original Message-----
>>> From: Greig A Cowan [mailto:[log in to unmask]]
>>> Sent: 21 September 2006 13:11
>>> To: Graeme Stewart
>>> Cc: Coles, J (Jeremy); GridPP Dteam
>>> Subject: Re: pre-GDB meeting
>>>
>>>
>>> Hi Jeremy,
>>>
>>> I meant to reply to you about this. I've not been directly involved
>> with
>>> the working group so far, but am aware of the ongoing discussions and
>>> reports that they have generated. According to the agenda Tier-2s are
>> now
>>> getting a mention, so I think it would be useful if I attended.
>>>
>>> http://agenda.cern.ch/fullAgenda.php?ida=a058490
>>>
>>> Cheers,
>>> Greig
>>>
>>> On Thu, 21 Sep 2006, Graeme Stewart wrote:
>>>
>>>> I suspect I'll still be mired in the new Glasgow cluster at this
>>>> rate. Perhaps Greig would want to go?
>>>>
>>>> Graeme
>>>>
>>>> On 18 Sep 2006, at 19:16, Coles, J ((Jeremy)) wrote:
>>>>
>>>>> Dear All
>>>>>
>>>>> One or two of you may be interested in taking part in this
>> discussion.
>>>>> Graeme and Greig I believe you are already partly involved with
>> the
>>>>> working group so perhaps one of you would like to attend? Feedback
>>>>> from
>>>>> anyone else welcome as always!
>>>>>
>>>>> Jeremy
>>>>>
>>>>> -----Original Message-----
>>>>> From: Kors Bos [mailto:[log in to unmask]]
>>>>> Sent: 18 September 2006 15:03
>>>>> To: 'GDB'; [log in to unmask]
>>>>> Subject: pre-GDB meeting
>>>>>
>>>>> Dear colleagues,
>>>>>
>>>>> when we discussed the implementation of the SRMv2.2 storage
>> classes
>>>>> after Artem Trunov's presentation during the GDB at BNL it became
>>>>> clear
>>>>> that we need more time for discussion. Artem and I therefor
>> propose a
>>>>> dedicated meeting on the afternoon of Tuesday October 3, the day
>>>>> before
>>>>> the next GDB at CERN in the IT Aud. A more detailed agenda will be
>> put
>>>>> up soon.
>>>>>
>>>>> I hope the experiments can be represented as well as the Tiers but
>> of
>>>>> course anybody else is welcome. We need to arrive at very
>> practical
>>>>> solutions on how the storage classes are going to be used by the
>>>>> experiments and how that is going to be implemented at the Tiers.
>> The
>>>>> experiments foresee large scale Monte Carlo productions and
>>>>> reconstruction efforts very soon and it is at present not clear
>> how
>>>>> the
>>>>> data will be managed.
>>>>>
>>>>> Your suggestions are much appreciated.
>>>>>
>>>>> Kors
>>>>>
>>>>>
>>>>>
>>>>>
>>>> --
>>>> Dr Graeme Stewart -
>> http://wiki.gridpp.ac.uk/wiki/User:Graeme_stewart
>>>> GridPP DM Wiki - http://wiki.gridpp.ac.uk/wiki/Data_Management
>>>> ScotGrid - http://www.scotgrid.ac.uk/ http://scotgrid.blogspot.com/
>>>>
>>>>
>>>>
>>> --
>>>
>> ========================================================================
>>> Dr Greig A Cowan
>> http://www.ph.ed.ac.uk/~gcowan1
>>> School of Physics, University of Edinburgh, James Clerk Maxwell
>> Building
>>> TIER-2 STORAGE SUPPORT PAGES:
>> http://wiki.gridpp.ac.uk/wiki/Grid_Storage
>> ========================================================================
>>
> 


-- 
- O. van der Aa - Imperial College London -
-       LT2 Technical Coordinator         -
- tel: +442075947810, +442071005426       -
- SIP: [log in to unmask]              -
- fax: +442078238830                      -
- http://surl.se/agtu                     -

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