Re: [zfs-discuss] ZFS storage server hardware

2009-11-18 Thread Ian Allison
Chris Du wrote: > You can get the E2 version of the chassis that supports multipathing > but you have to use dual port SAS disks. Or you can use seperate SAS > hba to connect to seperate jbos chassis and do mirror over 2 chassis. > The backplane is just a path-through fabric which is very unlikely

Re: [zfs-discuss] ZFS storage server hardware

2009-11-17 Thread Ian Allison
Cascading Cable * SAS 846EL1 BP 1-Port Internal Cascading Cable I don't do any monitoring in the JBOD chassis.. Bruno Ian Allison wrote: Hi Bruno, Bruno Sousa wrote: Hi, I currently have a 1U server (Sun X2200) with 2 LSI HBA attached to a Supermicro JBOD chassis each one with 24

Re: [zfs-discuss] ZFS storage server hardware

2009-11-17 Thread Ian Allison
Hi Bruno, Bruno Sousa wrote: Hi, I currently have a 1U server (Sun X2200) with 2 LSI HBA attached to a Supermicro JBOD chassis each one with 24 disks , SATA 1TB, and so far so good.. So i have a 48 TB raw capacity, with a mirror configuration for NFS usage (Xen VMs) and i feel that for the pric

Re: [zfs-discuss] ZFS storage server hardware

2009-11-17 Thread Ian Allison
Hi Richard, Richard Elling wrote: Cases like the Supermicro 846E1-R900B have 24 hot swap bays accessible via a single (4u) LSI SASX36 SAS expander chip, but I'm worried about controller death and having the backplane as a single point of failure. There will be dozens of single point failure

[zfs-discuss] ZFS storage server hardware

2009-11-17 Thread Ian Allison
Hi, I know (from the zfs-discuss archives and other places [1,2,3,4]) that a lot of people are looking to use zfs as a storage server in the 10-100TB range. I'm in the same boat, but I've found that hardware choice is the biggest issue. I'm struggling to find something which will work nicely

[zfs-discuss] Trouble testing hot spares

2009-10-21 Thread Ian Allison
Hi, I've been looking at a raidz using opensolaris snv_111b and I've come across something I don't quite understand. I have 5 disks (fixed size disk images defined in virtualbox) in a raidz configuration, with 1 disk marked as a spare. The disks are 100m in size and I wanted simulate data cor