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Part 4 - Storage controller architecture

Welcome to part 4 of the Virtual Datacenter scaling problems with traditional shared storage series. The previous parts of the series focused on the network topology and the inability to leverage the bandwidth as a cluster resource and the subsequent lack of distributed resource management and placement. This part focuses...

Part 3 - Data path is not managed as a clustered resource

Welcome to part 3 of the Virtual Datacenter scaling problems with traditional shared storage series. Last week I published an article about the FAST presentation “A Practical Implementation of Clustered Fault Tolerant Write Acceleration in a Virtualized Environment”. Ian Forbes followed up with the question about the advantages of throughput...

Virtual Datacenter scaling problems with traditional shared storage - part 2

Oversubscription Ratios The most common virtual datacenter architecture consists of a group of ESXi hosts connected via a network to a centralized storage array. The storage area network design typically follows the core-to-edge topology. In this topology a few high-capacity core switches are placed in the middle this topology. ESXi...

Virtual Datacenter scaling problems with traditional shared storage

Early this week I published an article about the FAST presentation “A Practical Implementation of Clustered Fault Tolerant Write Acceleration in a Virtualized Environment”. Ian Forbes followed up with the question: In the question period somebody asked a good question. PernixData says that write-back with peer mirror will give an...

FAST '15 presentation about FVP Fault Tolerant WriteBack

Recently PernixData engineer Deepavali Bhagwat presented at the prestigious 13th USENIX Conference on File and Storage Technology (FAST) about FVP Fault Tolerant Writeback. The title of the presentation is called “A Practical Implementation of Clustered Fault Tolerant Write Acceleration in a Virtualized Environment”. USENIX provided the video, slides and the...