Modern data stack worker nodes support the platform runtime services and customer workloads. The runtime services are defined in the Red Hat OpenShift Container Platform. User deployments define the workloads. Dell Technologies recommends the configuration in General-purpose modern data stack worker node configuration as a starting point for general-purpose workloads.
Table 4. General-purpose modern data stack worker node configuration Platform | PowerEdge R660 server |
Chassis | 2.5 in chassis with up to eight SAS or SATA hard drives, three PCIe slots, and two CPUs |
Chassis configuration | Riser configuration 2, three low-profile 16-channel slots, (two Gen5 and one (Gen4) |
Power supply | Dual hot-plug, fully redundant (1+1), 1400 W, mixed mode power supplies |
Processor | Dual Intel Xeon Gold 6438Y 2 G, 32 C/64 T, 16 GT/s, 60 M Cache, turbo, HT (205 W) DDR5-4800 |
Memory capacity | 768 GB (twelve 64 GB RDIMM, 4800 MT/s, dual rank) |
Internal RAID storage controllers | Dell PERC HBA355i with rear load bracket |
Disk—SSD | Two 1.6 TB hot-plug, mixed-use SAS SSDs with up to 24 Gbps, 512 2.5 in, Federal Information Processing Standard (FIPS) Self-Encrypting Drives (SEDs) |
Boot-optimized storage cards | BOSS-N1 controller card + with two M.2 960 GB SSDs (RAID 1) |
Network interface controllers | NVIDIA ConnectX-6 Lx dual port 10/25 GbE SFP28 adapter, PCIe low profile |
Dell Technologies recommends the disk volume layout for this set of machines that are listed in General-purpose modern data stack worker node volumes.
Table 5. General-purpose modern data stack worker node volumes Operating system | RAID 1 | Two M.2 960 GB SSDs | 0 |
Data | Simple | Two 1.6 TB SSDs | 1, 2 |
Note: Red Hat Enterprise Linux CoreOS controls the file system and partitions layouts during the installation process.
Volumes 1 and 2 provide node local storage, and can be used with the OpenShift Local Storage Operator to provide persistent storage through local volumes.
Dell Technologies recommends four worker nodes for a minimum deployment.
The configuration includes two network ports to support high-availability (HA) networking. These ports can be from a single network card, or a pair of network cards for additional adapter level HA.
Two M.2 960 GB SSDs in a RAID 1 configuration are used for the operating system volume.
The servers are not configured with a large amount of storage because the Dell CSI drivers provide runtime storage on PowerStore.
System memory has been sized to support all required services and common workloads. If the anticipated workloads are larger, memory can be increased.
The processors have been chosen to support compute intensive AI and ML workloads and include dual Intel Advanced Vector Extensions (AVX) units for maximum compute speed. Other processor choices are possible but should be made with memory requirements and overall power consumption in mind.