Hi. I have tested zfs for a while and is very impressed with the ease one can create filesystems (tanks). I''m about to try it out on a atabeast with 42 ata 400 GB disks for internal use, mailny as a fileserver. If this goes well (as I assume it will) I''ll consider to desploy zfs on a larger scale in about a year from now. First I wanted to stripe two or four disks on the atabeast and do a raidz2 volume in zfs. The consensus (reading the faq'' and browsing the archives) appears to be to let zfs handle the disk if possible. Then I was planning to create four raidz2 filesystems (8+2) with two spares but would have preferred to create one large volume if possible rather than four smaller ones. Searching the archives brought me to http://www.opensolaris.org/jive/thread.jspa?messageID=72858 which is an elegant way to solve my quest for space. May I suggest that the answer is included in the faq. First of all I will create one large volume doing zspool create myspace \ raidz2 dev01 dev02 .. dev10 spare dev21 raidz2 dev11 dev12 .. dev20 spare dev21 raidz2 dev22 dev23 .. dev31 spare dev42 raidz2 dev32 dev33 .. dev41 spare dev42 Can two raidz2 pool''s share the same spare? Our main storage is a HDS 9585V Thunder with vxfs and raid5 on 400 GB sata disk handled by the storage system. If I would migrate to zfs that would mean 390 jbod''s. What''s the largest volume that zfs has been exposed to? Will it be viable to repeat the above mentioned command to create something like a 100+TB filesystem and create smaller ones inside each 4 TB in size? The files are approx. 1 MB and the thumbnails around 20 KB. regards Claus
Claus Guttesen wrote:> > Our main storage is a HDS 9585V Thunder with vxfs and raid5 on 400 GB > sata disk handled by the storage system. If I would migrate to zfs > that would mean 390 jbod''s.How so?
> > Our main storage is a HDS 9585V Thunder with vxfs and raid5 on 400 GB > > sata disk handled by the storage system. If I would migrate to zfs > > that would mean 390 jbod''s. > > How so?Do you mean whether the hds can be turned in to a (rather large) jbod storage system? I just found out yesterday that our atabeast has no option other than raid0, -4 and -5 when defining raid-level. So no jbod''ing on that one. regards Claus
Hello Claus, Friday, February 16, 2007, 9:18:26 AM, you wrote:>> > Our main storage is a HDS 9585V Thunder with vxfs and raid5 on 400 GB >> > sata disk handled by the storage system. If I would migrate to zfs >> > that would mean 390 jbod''s. >> >> How so?CG> Do you mean whether the hds can be turned in to a (rather large) jbod CG> storage system? I just found out yesterday that our atabeast has no CG> option other than raid0, -4 and -5 when defining raid-level. So no CG> jbod''ing on that one. Then do RADI-5 LUNs on the array and stripe between them in ZFS. -- Best regards, Robert mailto:rmilkowski at task.gda.pl http://milek.blogspot.com
> >> > Our main storage is a HDS 9585V Thunder with vxfs and raid5 on 400 GB > >> > sata disk handled by the storage system. If I would migrate to zfs > >> > that would mean 390 jbod''s. > >> > >> How so? > > CG> Do you mean whether the hds can be turned in to a (rather large) jbod > CG> storage system? I just found out yesterday that our atabeast has no > CG> option other than raid0, -4 and -5 when defining raid-level. So no > CG> jbod''ing on that one. > > Then do RADI-5 LUNs on the array and stripe between them in ZFS.Yes, that''s what I did, although I plan to stripe two disks and will do raidz2 on those. Solaris 10 is installing atm. :-) regards Claus
Hello Claus, Friday, February 16, 2007, 10:09:52 AM, you wrote:>> >> > Our main storage is a HDS 9585V Thunder with vxfs and raid5 on 400 GB >> >> > sata disk handled by the storage system. If I would migrate to zfs >> >> > that would mean 390 jbod''s. >> >> >> >> How so? >> >> CG> Do you mean whether the hds can be turned in to a (rather large) jbod >> CG> storage system? I just found out yesterday that our atabeast has no >> CG> option other than raid0, -4 and -5 when defining raid-level. So no >> CG> jbod''ing on that one. >> >> Then do RADI-5 LUNs on the array and stripe between them in ZFS.CG> Yes, that''s what I did, although I plan to stripe two disks and will CG> do raidz2 on those. Solaris 10 is installing atm. :-) Hot Spare would be little bit more complicated then but it will work. -- Best regards, Robert mailto:rmilkowski at task.gda.pl http://milek.blogspot.com
> >> >> > Our main storage is a HDS 9585V Thunder with vxfs and raid5 on 400 GB > >> >> > sata disk handled by the storage system. If I would migrate to zfs > >> >> > that would mean 390 jbod''s. > >> >> > >> >> How so? > >> > >> CG> Do you mean whether the hds can be turned in to a (rather large) jbod > >> CG> storage system? I just found out yesterday that our atabeast has no > >> CG> option other than raid0, -4 and -5 when defining raid-level. So no > >> CG> jbod''ing on that one. > >> > >> Then do RADI-5 LUNs on the array and stripe between them in ZFS. > > CG> Yes, that''s what I did, although I plan to stripe two disks and will > CG> do raidz2 on those. Solaris 10 is installing atm. :-) > > Hot Spare would be little bit more complicated then but it will work.Just got second thoughts and re-created the raid-sets on the atabeast to 3+1 (raid5) with a hotspare. Then I can have a faulty drive. Then I''ll do raidz2 on in zfs. regards Claus