Hi guys! I am student from poland and I am preparing my assignment about Solaris 11 cloud computing capabilities.
I am writing about ZFS now, and as I am quite new to this stuff I have several question (I prefere to have deep understanding of what I am doing, instead of just rewriting the documentation...). I was using a little bit the Red Hat's LVM so I will do some comparations here.
1. ZFS is a file system, and a volume manager "in one"?
2. What is the difference between LVM and ZFS? ZFS creates a pool(LVMs volume group) of disks(LVMs physical volumes) and from this pool administrators can create ZFS file systems (LVMs logical volumes). At this point I dont see any differences. And rumours says that ZFS is actually better than LVM, why?
3. ZFS have lots of capabilities like deduplication, and it has the "monitoring" systems that prevents data from being incomplete - but this is at the expense of efficiency. (high cpu and memory utilization). So ZFS is rather a slow filesystem?
4. And a quote from the documentation, which I cant understand...
"The storage pool describes the physical characteristics of the storage (device layout, data redundancy, and so on) and acts as an arbitrary data store from which file systems can be created. "
What does the physical characteristics part exacly mean?
Thanks in advance!
Krzysztof
05-29-2014
