Solstorm has been upgraded and expanded over time, and the compute-nodes are of different hardware generations and configurations because of this.
Node compute-1-0 -> 1-15
HP bl685c G7
CPU: 4x 2.2GHz AMD Opteron 6274 – 16 core
RAM: 128Gb
Disk: 300Gb SAS 15k rpm
Node compute-2-0 -> 2-51
HP dl165 G5
CPU: 2x 2.4GHz AMD Opteron 2431 – 6 core
RAM: 24Gb
Disk: 150Gb SAS 15k rpm
Node compute-4-0 -> 4-49
Lenovo NextScale nx360 M5
CPU: 2x 2.3GHz Intel E5-2670v3 – 12 core
RAM: 64Gb
Disk: 120Gb SATA SSD
Node compute-4-50 -> 4-58
Lenovo NextScale nx360 M5
CPU: 2x 3.4GHz Intel E5-2643v3 – 6 core
RAM: 512Gb
Disk: 120Gb SATA SSD
Node compute-5-0 -> 5-23
Dell PowerEdge R640
CPU: 2x 2.4GHz Intel Xeon Gold 5115 CPU – 10 core
RAM: 96Gb
Disk: 55Gb SATA SSD
Node compute-6-0 -> 6-23
Lenovo ThinkSystem SD530
CPU: 2x 3.5GHz Intel Xeon Gold 6144 CPU – 8 core
RAM: 384Gb
Disk: 250Gb SATA SSD
Node compute-6-24 -> 6-49
Lenovo ThinkSystem SD530
CPU: 2x 3.6GHz Intel Xeon Gold 6244 CPU – 8 core
RAM: 384Gb
Disk: 250Gb SATA SSD