This is a new xrootd based storage system at CERN.
Datasets Present
The T2_CH_CERN site in
PhEDEx controls the data available.
Proposed Migration Plan
Pool |
Current Size |
Proposed Size |
Proposed Date |
Prerequisites |
LFN Area |
#files |
Status |
CMSCAF |
1.7PB |
2PB |
June 20-27 |
Switch to xrootd access (28th March), PhEDEx node T2_CH_CERN |
/store/ |
992948 |
Done |
CMSCAFUSER [*] |
210TB |
300TB |
September |
Data only under /store/caf/, CRAB stageout |
/store/caf/ |
810051 |
Done |
GRIDHOME [*] |
50TB |
100TB |
September |
Users need to update their CRAB config, redirect rule needed |
/store/user/ |
13158 |
Done |
CMSCAFT2 [*] |
80TB |
300TB |
September |
Redirect rule can be removed, CRAB stageout |
/store/user/ |
22919 |
Done |
DEFAULT |
220TB |
600TB |
September |
Dataset Popularity Service? |
/store/ |
562143 |
|
CMST3 [*] |
420TB |
600TB [1] |
September |
Users need to update their CRAB config, data only under /store/cmst3/, CRAB stageout |
/store/cmst3/ |
1430045 |
Done |
T0EXPRESS [*] |
200TB |
200TB |
November |
Tier-0 supports stage-out to xrootd |
/store/express/ |
1762192 |
Done |
T0TEMP |
150TB |
150TB |
November |
Tier-0 supports stage-out to xrootd |
/store/t0temp/ |
373100 |
Done |
T0STREAMER [2] |
500TB |
500TB |
? |
P5 transfer supports stage-out to xrootd |
/store/t0streamer/ |
9774998 |
|
[*] These pools store only copy of data, perhaps replication factor should be 3, or a backup should be made
[1] 50TB of this is controlled by
PhEDEx with group "local"
[2] Not sure we want to move this pool as it should be phased out at some point and the use folded into t0temp space
We would still keep a small (100TB) DEFAULT pool on CASTOR till end of August. After that we can remove the redirect from
EOS to CASTOR. Users would need to follow specific instructions to retrieve files from tape. Open question: what about /castor/cern.ch/user files?
Current space reservations
This is dumped daily from the
EOS quota system.
Failed to include URL http://cern.ch/gowdy/EOS_zh.txt
Not Found
--
StephenJGowdy - 15-Dec-2010