R. Divià, U. Fuchs, P. Vande Vyvre – CERN/PH 13 June 2012

Infrastructure June 2012P. Vande Vyvre – CERN/PH2 Racks: Present racks are problematic for recent machines (non-standard mechanical tolerances and rails positions) Possibly exchange some racks, or all New CIAT racks come with more powerful cooling doors (needed for GDCs and TDSs) KVM: Replace KVM solution (close to end-of-life) Power: No change inside racks (new PDUs should already be in place) Exchange Hazemeyer distribution rack ? UPS ? Fibres: 6 new DCAL SMs plus 2-1/3 SMs - 18 fibers for DAQ, 18 fibers for HLT Tasks (DAQ + TC) Racks installation Power Impact No DAQ when intervention on infrastructure

DAQ Network June 2012P. Vande Vyvre – CERN/PH3 Network: Major change: Replace central router (heavy weight objects: need special transport) Change the cabling structure (lots of cabling to be done) Router: use of the IT network frame contract. Central network F10 router replaced by a Brocade Testing of the Brocade has started Tasks (DAQ team + Transport): Order the Brocade router Install new router Remove CAT5 cabling Install fibers from router to racks (10Gbps uplinks) Install top-of-rack switches Impact: No DAQ during when intervention on network

Computing equipment June 2012P. Vande Vyvre – CERN/PH4 Computers Replacement of a large fraction of the readout computers (LDCs) Other old machines to be replaced (ACR PCs and screens) Testing of replacement models has started Remove 'old' machines Out-of-warranty machines can be used for labs Storage Replace old FC switches Replace old disk arrays with a new and more compact model Tasks (DAQ team): Finish testing Market survey and price enquiry (possibly joining forces with IT) Order equipment Install equipment Impact: Reduced DAQ when intervention on computing

Services needed during LS1 June 2012P. Vande Vyvre – CERN/PH5 Logbook: Must be always available Move it to Meyrin site whenever needed ACR: What has to be available and when (DCS e.g.) DAQ system to support detectors activities: Long CR1 downtimes unavoidable. May try to ensure minimal services (e.g. central servers only). Needs to be prepared in advance Will not be always possible Need input on when/what this will be required Re-commissioning: when ? Testing and validation exercises involving multiple projects (CTP, DAQ, ECS, HLT, DCS, Offline...)

AOB June 2012P. Vande Vyvre – CERN/PH6 Protections needed in CRs and ACR during other interventions: Power glitches/losses Cooling interruptions Mechanical interventions (dusting, moving, pulling...) ACR Re-allocation of resources (RC/TC driven) New equipment needed (apart from the PCs): Projector Printers Screens (less & bigger?) Anti-static protections Large screens (still OK, how long more will they work?)