今天使用了openfiler測了一下iscsi
感覺還不錯用
iscsi應該是未來考慮的方向
但iscsi無法用來backup
所以backup還是要用nfs

LVM Groups with Network Backing

In this configuration, network block devices (iSCSI targets) are used as the physical volumes for LVM logical volume storage. This is a two step procedure and can be fully configured via the web interface.

1. First, add the iSCSI target. (On some iSCSI targets you need to add the IQN of the Proxmox VE server to allow access.)
   • Click 'Add iSCSI Target' on the Storage list
   • As storage name use whatever you want but take care, this name cannot be changed later.
   • Give the 'Portal' IP address or servername and scan for unused targets
   • disable 'use LUNs direcly'
   • Click save

1. Second, add LVM group on this target.
   • Click 'Add LVM Group' on the Storage list
   • As storage name use whatever you want but take care, this name cannot be changed later.
   • For 'Base Storage', use the drop down menu to select the previously defined iSCSI target.
   • For 'Base Volume' select a LUN
   • For 'Volume Group Name' give a unique name (this name cannot be changed later).
   • Enable shared use (recommended)
   • Click save

http://pve.proxmox.com/wiki/Storage_Model#LVM_Groups_with_Network_Backing