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LTS Research Computing provides a Ceph based storage resource, also called as Ceph. In Fall 2018, a 768TB storage cluster was designed, build and deployed to replace the original Ceph cluster, a 1PB storage cluster. In Fall 2020, total storage was increased to 1566TB 2019TB by the addition of 798TB 796TB from Hawk and a further 455TB investment from LTS.
How is Data Stored in Ceph?
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7 storage nodes
One 2.4GHz 16-core AMD EPYC 7351P,
128GB 2666MHz DDR4 RAM
Three Micron 1.9TB SATA 2.5 IN Enterprise SSD
Total Raw Storage: 5.7TB for CephFS (Fast Tier)
Two Intel 240GB DC S4500 Enterprise SSD (OS only)
13 Seagate 8TB SATA HDD
Total Raw Storage: 104TB Ceph (Slow Tier)
10 GbE and 1 GbE network interface
CentOS 7.x
7 11 storage nodes
One 3.0GHz 16-core AMD EPYC 7302P,
128GB 2666MHz DDR4 RAM
Three
Micron 1.9TB SATA
2.5 IN Enterprise SSD
Total Raw Storage: 5.7TB for CephFS (Fast Tier)
Two Intel 240GB DC
S4500 S4510 Enterprise SSD (OS only)
9
Seagate 12TB SATA HDD
Total Raw Storage: 108TB Ceph (Slow Tier)
- 10 GbE and 1 GbE network interface CentOS 7.x
- Debian 10
Raw Storage: 1484TB 1916TB (Slow Tier) and 79102.8TB 6TB (Fast Tier)
Available Storage: 420TB 543TB (Slow Tier) and 22.6TB 29TB (Fast Tier)
Why two tiers of storage?
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