Jim Sloey writes:
 > > Roch - PAE wrote:
 > > The hard part is getting a set of simple requirements. As you go into 
 > > more complex data center environments you get hit with older Solaris 
 > > revs, other OSs, SOX compliance issues, etc. etc. etc. The world where 
 > > most of us seem to be playing with ZFS is on the lower end of the 
 > > complexity scale. 
 > 
 > I've been watching this thread and unfortunately fit this model. I'd
 > hoped that ZFS might scale enough to solve my problem but you seem to
 > be saying that it's mostly untested in large scale environments. 
 > About 7 years ago we ran out of inodes on our UFS file systems. We
 > used bFile as middleware for a while to distribute the files across
 > multiple disks and then switched to VFS on SAN about 5 years
 > ago. Distribution across file systems and inode depletion continued to
 > be a problem so we switched middleware to another vendor that
 > essentially compresses about 200 files into a single 10Mb archive and
 > uses a DB to find the file within the archive on the correct
 > disk. Expensive, complex and slow but effective solution until the
 > latest license renewal when we got hit with a huge bill.  
 > 
 > I'd love to go back to a pure file system model and looked at Reiser4,
 > JFS, NTFS and now ZFS for a way to support over 100 million small
 > documents and 16Tb. We average 2 file reads and 1 file write per
 > second 24/7 with expected growth to 24Tb. I'd be willing to scrap
 > everything we have to find a non-proprietary long term solution. 
 > ZFS looked like it might provide an answer. Are you saying it's not
 > really suitable for this type of application? 
 >  

I don't think it was the point of the post. I've read it to
mean that some customers because of outside consideration
from ZFS have some need to use storage array in ways that
may not allow ZFS to develop it's full potential. If you
don't replicate within ZFS, then ZFS will not be able to
heal corrupted blocks. But if you're storage model allow for 
ZFS replication, then the quote is not aimed at your case.

Are you going to grow to 24TB using a few writes per second ?

-r




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