Re: [zfs-discuss] reccomended disk configuration
I also wanted to test a recovery of my pool, so my took two disk raidz pool onto a friends freebsd box. It seems both systems use zfs version 6, but the import failed. I noticed on the boot logs: GEOM: ad6: corrupt or invalid GPT detected. GEOM: ad6: GPT rejected -- may not be recoverable. Is that a solaris or freebsd problem do you think? This has to do with the GPT (http://en.wikipedia.org/wiki/GUID_Partition_Table) support rather than ZFS. IIRC the GPT:s written by Solaris are valid, just not recognized properly by FreeBSD (but I am out of date and don't remember the source of this information). AFAIK the ZFS pools themselves are fully portable. -- / Peter Schuller PGP userID: 0xE9758B7D or 'Peter Schuller [EMAIL PROTECTED]' Key retrieval: Send an E-Mail to [EMAIL PROTECTED] E-Mail: [EMAIL PROTECTED] Web: http://www.scode.org pgpFiIJzXKiig.pgp Description: PGP signature ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] reccomended disk configuration
Mario Goebbels wrote: Hi, thanks for the tips. I currently using a 2 disk raidz configuration and it seems to work fine, but I'll probably take your advice and use mirrors because I'm finding the raidz a bit slow. What? How would a two disk RAID-Z work, anyway? A three disk RAID-Z missing a disk? 50% of the total diskspace parity (which would be a crippled mirror)? It works like a 2-way mirror that cannot be expanded to a 3-way mirror. I'm not sure I would consider it crippled, but it is confusing the intention of the sys admin. -- richard ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] reccomended disk configuration
I have: 2x150GB SATA ii disks 2x500GB SATA ii disks Is it possible/recommended to have something like a pool of two raidz pools. This will hopefully maximize my storage space compared to mirrors, and still give me self healing yes? You can't create a RAID-Z out of two disks. You either have to go with two mirrors (150GB and 500GB) in a pool, or the funkier variation of a RAID-Z and mirror (4x150GB and a 350GB mirror). Both of these configurations should offer full redundancy, though if one of the 500GB disks fail, it'll affect two vdevs! The mirror pool gives you 650GB, the mixed pool around 800GB. I'd suggest going with the mirror, for better overall read performance. -mg ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] reccomended disk configuration
Hi, thanks for the tips. I currently using a 2 disk raidz configuration and it seems to work fine, but I'll probably take your advice and use mirrors because I'm finding the raidz a bit slow. What? How would a two disk RAID-Z work, anyway? A three disk RAID-Z missing a disk? 50% of the total diskspace parity (which would be a crippled mirror)? I'm confused. -mg ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] reccomended disk configuration
On 9/15/07, Mario Goebbels [EMAIL PROTECTED] wrote: You can't create a RAID-Z out of two disks. You either have to go with two mirrors (150GB and 500GB) in a pool, or the funkier variation of a RAID-Z and mirror (4x150GB and a 350GB mirror). Actually, you can. It may not make sense but it is possible (1 more than the number of parity according to the man pages). -- Just me, Wire ... Blog: prstat.blogspot.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] reccomended disk configuration
On 9/15/07, Peter Bridge [EMAIL PROTECTED] wrote: I have: 2x150GB SATA ii disks 2x500GB SATA ii disks I will go with a mirror. You need at least 500GB in parity anyway (since you want to survive any disk failure). That means the maximum you can get out of this setup is 800GB. With a mirror, you get 650GB (loss of 150GB) but you gain flexibility and performance (depending on what you do). -- Just me, Wire ... Blog: prstat.blogspot.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
