Eonstor Cs Expansion Principle; Eonstor Cs Storage System Expansion; Scale-Out; Scale-Up - Infortrend EonStor CS Series Expansion Manuallines

5. EonStor CS Expansion Principle

5.1 EonStor CS Storage System Expansion

EonStor CS supports both scale-out and scale-up expansion, and the system does not need to be turned off
during the expansion process. Infortrend Distributed File System (IDFS) is a highly efficient distributed file
system that increases performance and capacity by expanding the storage unit based on the disk pool.

5.1.1 Scale-out

Scale-out refers to improving the performance and storage capacity by connecting several storage systems
(nodes) together and using the cluster node expansion method to expand the system capacity and
computing resources (CPU, memory, and network bandwidth).

5.1.2 Scale-up

Scale-up refers to the improvement of access efficiency and storage capacity by connecting several
expansion enclosures (JBODs) to the disk channel in the back-end of a single storage system (or a storage
node). Compared to scale-out expansion, the scale-up expansion provides a cost-effective solution by
purchasing expansion enclosures to achieve system performance and storage space improvement.
However, the performance and scalability provided by scale-up expansion cannot exceed the limits of the
storage node. If there are additional performance requirements, users can only deploy the storage system
using scale-out expansion.
Infortrend Expansion Guide
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