Re: [ccp4bb] To archive or not to archive, that's the question!

2011-10-29 Thread Jrh
Dear Gerard K, Many thanks indeed for this. Like Gerard Bricogne you also indicate that the location option being the decentralised one is 'quite simple and very cheap in terms of centralised cost'. The SR Facilities worldwide I hope can surely follow the lead taken by Diamond Light Source and

Re: [ccp4bb] To archive or not to archive, that's the question!

2011-10-29 Thread Herbert J. Bernstein
One important issue to address is how deal with the perceived reliability issues of the federated model and how to start to approach the higher reliability of the centralized model described bu Gerard K, but without incurring what seems to be at present unacceptable costs. One answer comes from

Re: [ccp4bb] To archive or not to archive, that's the question!

2011-10-29 Thread Jrh
Dear Herbert, I imagine it likely that eg The Univ Manchester eScholar system will have in place duplicate storage for the reasons you outline below. However for it to be geographically distant is, to my reckoning, less likely, but still possible. I will add that further query to my first query

Re: [ccp4bb] To archive or not to archive, that's the question!

2011-10-29 Thread Herbert J. Bernstein
Dear John, Most sound institutional data repositories use some form of off-site backup. However, not all of them do, and the standards of reliabilty vary. The advantages of an explicit partnering system are both practical and psychological. The practical part is the major improvement in

Re: [ccp4bb] Seeded rescreening with robot?

2011-10-29 Thread Pius Padayatti
I have few personal remarks about revere matrix seeding protocol suggested here just an addition to Artems suggested protocol harvesting the whole drop of interest invite guaranteed salt crystals in the second round especially if one is using the same screen back. If one found crystals all over

Re: [ccp4bb] Seeded rescreening with robot?

2011-10-29 Thread Bosch, Juergen
Hm, I wouldn't call these micro crystals anymore, I mount those things and get datasets from them (sometimes). In my world 50 µm is defined as big. Jürgen On Oct 29, 2011, at 2:51 PM, Pius Padayatti wrote: In short if you found microcrystals (15 to 20 um) harvesting them is what i found is