- 2. IBM Cloud Scale-out Block Storage Cluster

Key Features

QuantaStor’s scale-out block storage configurations provide highly-available iSCSI block storage suitable for a variety of use cases. Each appliance contains SSD to accelerate write performance and each cluster must contain a minimum of 3x appliances. QuantaStor’s web-based management interface, REST APIs and QS CLI make storage provisioning and automation easy.

QuantaStor Scale-out iSCSI Block Storage Features

• 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.

Performance

Adding appliances will boost performance as the configuration scales-out. Small 3x appliance configurations will deliver between 400MB/sec and 1.2GB/sec sequential throughput depending on block size and number of concurrent client connections. Erasure-coding is recommended for best write performance and replica mode is recommended for best read performance.

Reference Configurations

Scale-out iSCSI Block Storage Configuration Options

Small Tier - Hybrid Block Storage – 16TB	Use Cases	System View
2x E5-2650v4 or 4110, 64GB RAM, 8x 2TB SATA, QS Small Tier License, 1x 800GB SSDs (write log), 2x 1TB SATA (mirrored boot), 2x 10GbE Private Network ports	Highly-available block storage for virtualization (VMware, Hyper-V, XenServer) Scale-out block storage with Cinder integration for KVM based OpenStack deployments Highly-available block storage for databases	View Design Provisioning Guide Deploy

Medium Tier - Hybrid Block Storage – 48TB	Use Cases	System View
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	Highly-available block storage for virtualization (VMware, Hyper-V, XenServer) Scale-out block storage with Cinder integration for KVM based OpenStack deployments Highly-available block storage for databases	View Design Provisioning Guide Deploy

Large Tier - Hybrid Block Storage – 128TB	Use Cases	System View
2x E5-2620v4 or 4110, 128GB RAM, 16x 8TB SATA, QS Large Tier License, 2x 800GB SSDs (write log), 2x 1TB SATA (mirrored boot), 2x 10GbE Private Network ports	Highly-available block storage for virtualization (VMware, Hyper-V, XenServer) Scale-out block storage with Cinder integration for KVM based OpenStack deployments Highly-available block storage for databases	View Design Provisioning Guide Deploy