FastNetMon

среда, 20 мая 2015 г.

Technical comparison of OpenVZ and commercial Virtualization Platforms from Parallels/Odin


There are bunch promotion articles about PCS (Parallels/Odin Cloud Server) and Virtuozzo. But I can't find any technical comparison between OpenVZ (open source and free) and commercial platforms.

I have 7 years experience with OpenVZ and 2 year experience with PCS in heavy production, thus I could create this comparison table manually :)


Feature Commercial OpenVZ
API Yes No
Central management Yes, PVA (awfully buggy) No, multiple open source solutions
Toolkit for compaction of fat ploop images Yes, pcompact No, but could be done in few lines of code with vzctl compact
Toolkit for migration physical servers to containers Yes, p2c migrate No
Rebootless kernel update (without physical server rebootm kernel reboot only) Yes, vzreboot No
Pure kernel live updates (without physical server reboot, no kernel reboot) No, only with external tool KernelCare No, only with external tool KernelCare
Repair mode for VPS Yes No
Live migration between servers (no zero downtime) Yes Yes
Live migration between servers (zero downtime) Yes No
Flexible container OS templates Yes, vztemplates No, only precreated templates
Memory deduplication for binary files Yes, pfcache techology No
Support for cloud storages for containers Yes, Parallels Cloud Storage No, only NFS
Completely isolated disk subsystem for containers Yes, ploop Yes, ploop
Support for fully virtualized virtual machines Yes, bundled support for Parallels VM No but works perfectly with KVM on same server
Fast and reliable kernel on top of RHEL 2.6.32 Yes (same version as OpenVZ) Yes
Full backup capability Yes No but open source solutions exists
Incremental backup Yes No and no open source solutions
NUMA optimization (balancing) Yes No, but some open source solutions exists
Finally, you could decide what are you want and select proper product for your company.

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