Virtualization and cloud computing are changing the way we design data centers. The more powerful CPUs Intel and AMD produce, the more virtual machines per core administrators can host on a single hypervisor. But the higher consolidation ratio we achieve the more issues we have with memory, storage and networking components, that are quickly becoming the new virtual infrastructure bottlenecks.
Virtualization vendors try to overcome memory limitations with several overcommitment techniques, like the new Memory Compression from VMware and the upcoming Dynamic Memory from Microsoft, while storage vendors try to develop more virtualization-friendly SANs controllers able to facilitate acrobatics like long-distance virtual machines live migrations, like the EMC VPLEX.
Excluding Cisco and HP, established networking vendors don’t seem equally busy in addressing the new challenges that exist in virtual and cloud computing infrastructures.
This topic has been covered a number of times before. The last one is in a roundtable hosted by the Association for Computing Machinery (ACM) last month.
The group of experts that participated the round table is particularly interesting as it includes CTOs and Vice Presidents from Citrix, Juniper, HP, Yahoo! and even the semi-stealth startup Nicira, where the founder and former CEO of VMware Diane Greene invested.
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