IBM Cloud Scale-out Object Storage Cluster

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QuantaStor’s scale-out object configurations provide S3 and SWIFT compatible REST API support. Configurations scale-out by adding additional drives and appliances. Each appliance contains SSD to accelerate write performance and each cluster must contain a minimum of 3x appliances and a maximum of 32s appliances (10PB maximum). QuantaStor’s storage grid technology enables appliances to be grouped together and managed as a storage grid which can spans IBM datacenters. Within a storage grid one or more object storage clusters may be provisioned and managed from QuantaStor’s web based management interface as well as via QS REST APIs and the QS CLI.

QuantaStor Scale-out Object Storage

  • S3 & SWIFT Compatible REST API support
  • Hybrid HDD + SSD configuration to boost write performance
  • Easy web-based management of all appliances with built-in QuantaStor storage grid technology.
  • Easy expansion by adding appliances and/or drives.


  • Highly-available Large Scale Object Storage Archive
  • Data Analytics
  • Private Cloud Content Delivery Network
  • Disk-to-Disk Backup via S3
  • Next Generation Applications using S3 back-end


Add additional drives and/or additional appliances to expand capacity. Drives can be different sizes, appliances can have different numbers of drives but for optimal performance uniform drive count and capacities per QS server/appliance is recommended.


Adding appliances will boost performance as the configuration scales-out. Small 3x appliance configurations will deliver between 400MB/sec and 1.2GB/sec depending on object size and number of concurrent client connections. Erasure-coding is recommended for best write performance and replica mode is recommended for best read performance. Each appliance can present S3 access to object storage and load balancing of client connections across the appliances can be done in a variety of ways including round-robin DNS.


Step One: Storage Management Tab → Create Grid → Click OK
Step Two: Storage Management Tab → Add Grid Node → Enter 2nd Appliance IP → Click OK
Step Three: Storage Management Tab → Add Grid Node → Enter 3nd Appliance IP → Click OK
Step Four: Storage Management Tab → Controllers & Enclosures → Right-click Controller → Configure Pass-thru devices → Select all → Click OK (do this for each controller on each appliance)
Step Five: Storage Management Tab → Modify Storage System → Set Domain Suffix → Click OK (do this for each appliance)
Step Six: Scale-out Object Storage Tab → Create Ceph Cluster → Select all appliances → Click OK
Step Seven: Scale-out Object Storage Tab → Multi-Create OSDs → Select SSDs as journals, HDDs as OSDs → Click OK
Step Eight: Scale-out Object Storage Tab → Create Object Storage Pool Group → Select Erasure Coding Mode → Click OK


Hardware Networking Licenses and Fees
Small and Medium Tier configurations use 2RU server with 12x drive bays.
Large Tier configurations use 4RU server with 24x or 36x drive bays.
All configurations include mirrored boot, redundant power.
All configurations include 2x 800GB SSD for write acceleration.
2x 10GbE Private Network ports recommended for all configurations.
Use LACP bonding for network redundancy and improved throughput.
Select the OSNEXUS operating system QuantaStor license tier based on the amount of raw storage capacity.
License, maintenance, upgrades, and support included.


Medium Tier - Hybrid Object Storage – 48TB Large Tier - Hybrid Object Storage – 128TB Extra-large Tier - Hybrid Object Storage – 256TB
2x E5-2620v4 or 4110, 128GB RAM, 8x 6TB,
QS Medium Tier License, 1x 800GB SSDs (write log),
2x 1TB SATA (mirrored boot), 2x 10GbE Private Network ports
2x E5-2650v4, 128GB RAM, 16x 8TB, QS Large Tier License
2x 800GB SSDs (write log), 2x 1TB SATA (mirrored boot)
2x 10GbE Private Network ports
2x E5-2650v4, 256GB RAM, 32x 8TB, QS XL Tier License
2x 800GB SSDs (write log), 2x 1TB SATA (mirrored boot)
2x 10GbE Private Network ports