On Jan 28, 2010, at 7:25 PM, Christopher Chan <christopher.chan at bradbury.edu.hk > wrote: > >> There are concerns that everyone's currently fast performing LVM file >> systems will suddenly become doggish once barrier support is included >> and in some cases it will be true. Using a separate SSD device as a >> journal can help in some cases. >> > > That's only if you are using ext3/ext4 and data=journal. Are SSDs > faster > than bbu nvram cards? No, but for existing installations it is definitely better then the alternative. -Ross