[CentOS] ACLs iin Centos 4

>> I've understood that XFS is a great filesystem and would like to use 
>> it for our 2 file servers.  As I'm new to linux administration, I was 
>> planning to purchase SUSE to have the XFS filesystem supported for 
>> these two machines.  But, I really like the Centos distro and 
>> community.  So, I'm wondering, how hard would it be for me to get 
>> this working and to maintain it.  Is it complicated to recompile the 
>> Centos 4 kernel to enable it?  And, what sort of upkeep is necessary 
>> as updates become available?  I'd appreciate any general and specific 
>> information on what's involved to get XFS enabled on Centos 4.
>>
> Unless you specifically need a feature of XFS that's unavailable in 
> EXT3, you might want to stick with the "standard" journalled file 
> system since you are "new to linux administration."  I have never 
> played with XFS or Reiserfs so I can't comment on their merits, but I 
> can comment that EXT3 has been bulletproof for me on many file server 
> installs.  And being a lazy creature of habit, I've not felt the need 
> to rock the boat.  8-)
>
I've heard that it can take a very long time to get an EXT3 system back 
online after a file system crash; whereas, XFS provides rapid recovery 
from system crashes.  Since we mirror the two file servers (each have an 
attachment with 2 TB of data), I'm more interested in being able to get 
back online quickly.  Have you had any file system crashes and if so, 
how long did it take you to get back up?