Operating System
- Can we use Red Hat with our current license?
- Must support CASA
- Will need a patching/updating mechanism
- Try to have one OS that supports both our use and local use?
- Or they could dual boot?
- Or use containers (kubernetes, singularity. mesos, etc)?
- Ask Greg at CHTC what they use
- Can we use Red Hat with our current license? Do we even want to use Red Hat? Rocky Linux or AlmaLinux?
Third party software for VLASS
...
- replace disk (local admin)
- replace/reseat DIMM (local admin)
- replace power supply (local admin)
- NRAO may handle replacement hardware. Drop ship. Spare ourselves?
- Patching OS images (NRAO)
- Patching third party software like CASA and HTCondor (NRAO)
- Altering OS images (NRAO)
Hardware
- Cabinet Rack: Doors front and rear locking with mesh. Width: 19". Height: 42U is most common. Depth: 42" or 48"? Rack must support at least 2,000 lbs static load
- https://greatcabinets.com/product/es-ms/
- https://www.apc.com/shop/us/en/products/APC-NetShelter-SX-Server-Rack-Enclosure-42U-Black-1991H-x-600W-x-1070D-mm/P-AR3100
- https://www.apc.com/shop/us/en/products/APC-NetShelter-SX-Server-Rack-Enclosure-42U-Shock-Packaging-2000-lbs-Black-1991H-x-600W-x-1070D-mm/P-AR3100SP
- PDU: one PDU or two PDUs? What plug? What voltage? This may very across sites. What if the site has two power sources?
- https://www.apc.com/shop/us/en/products/APC-Rack-PDU-2G-switched-0U-30A-100V-to-120V-24-NEMA-5-20R-sockets/P-AP8932 24 NEMA 5-20R, 120V, 2.8kW, NEMA L5-30P 1Phase
- https://www.apc.com/shop/us/en/products/APC-Rack-PDU-9000-switched-0U-8-6kW-208V-21-C13-and-C15-3-C19-and-C21-sockets/P-APDU9965 21 C13/C15 and 3 C19/C21, 208V, 8.6kW, NEMA L21-30P 3Phase
- https://www.apc.com/shop/us/en/products/APC-Rack-PDU-9000-switched-0U-17-3kW-208V-42-C13-and-C15-6-C19-and-C21-sockets/P-APDU9967 42 C13/C15 and 6 C19/C21, 208V, 17kW, IEC60309 60A 3P+PE 3Phase
- Stagger startups on PDU
- UPS: for just the head node and switch? This may depend on the voltage of the PDUs.
- Switch: 10Gb/s.
- Environmental Monitoring: Could the PDU do this?
- KVM: rackmount, not remote, and patch cables
- Ethernet cables:
- Power cables: single or Y calbes depending on number of PDUs and two power sources.
- Head Node: lots of disk. Do the locals have access to this disk space? Maybe not.
- 30 1U nodes or 15 2U nodes or mix? NVMe drives for nodes. Swap drive?
- GPUs: Do we get GPUs? Do we get 1U nodes with room for 1 or 2 Tesla T4 GPUs or 2U nodes with room for 1 or 2 regular GPU?
Documentation
- A projectbook like we did for USNO could be appropriate
Other
Keep each rack as similar to the other racks as possible.
...