Go Back   Hardware Canucks > HARDWARE > Storage

    
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old September 8, 2011, 05:49 AM
Rookie
 
Join Date: Sep 2011
Location: GTA
Posts: 25
Question Best way to set up a large RAID volume

I currently have a 6TB RAID5 array set up using a 3Ware raid card under Linux, formatted with XFS on it. I never really used XFS before that, but was told it should be good for good volumes, so I gave it a shot. It gets terribly slow and sometimes (rarely though) would freeze up completely. At times re-mounting the volume fixes it up, sometimes the issues reoccur right after remount, it's just kind of unstable. I might need to expand the capacity soon and was considering changing the set up at the same time to make it better.

It's hard for me to judge if the issues I'm having are due to the card, the file system, the hard disks, or the phases of the moon. Some people say that software RAID may be an even better choice than hardware, as is eliminates the potential for a buggy card messing stuff up. What would you recommend?

Keep in mind, I am looking to keep it running Linux.
Reply With Quote
  #2 (permalink)  
Old September 8, 2011, 07:29 AM
grinder's Avatar
Allstar
F@H
 
Join Date: Mar 2007
Posts: 821

My System Specs

Default

I'm experienced in linux, but am not a nix "head" so take my post with a grain of salt.

I see more large volume arrays formatted with EXT3 (seems popular?). I don't see why XFS would have a major impact on your performance tho...

RAID performance on a hardware card will be less than optimal until the card has had a chance to perform a FULL initialization on the array.

I'm afraid that anyone who has recommended a software raid solution has not experienced a quality $500 raid card =(
__________________
Phenom II 945 :: ASUS M4A78-E (780G) :: BFG 285GTX :: 4GB Mushkin DDR2 (5-4-4-12) :: Creative Xi-Fi :: Seagate 500 gig 7200.12 (better than WD BLACK!!!!!) :: Samsung 2493HM
Reply With Quote
  #3 (permalink)  
Old September 8, 2011, 09:02 AM
Rookie
 
Join Date: Sep 2011
Location: GTA
Posts: 25
Default

Quote:
Originally Posted by grinder View Post
I'm experienced in linux, but am not a nix "head" so take my post with a grain of salt.

I see more large volume arrays formatted with EXT3 (seems popular?). I don't see why XFS would have a major impact on your performance tho...

RAID performance on a hardware card will be less than optimal until the card has had a chance to perform a FULL initialization on the array.

I'm afraid that anyone who has recommended a software raid solution has not experienced a quality $500 raid card =(
I have been using ext3 for all my other volumes, and it never gave any issues. I guess wanted to try out and see how xfs fares - probably will switch it to ext3 when I get a chance.

The card was set up over a year ago, so it definitely has fully initialized ages ago. The raid utility claims that everything should be fine and dandy, but somehow I'm a little skeptical of that. Will see if using a different file system will help, the problem of course is finding temporary storage to offload the content of that volume to be able to reformat it :(.
Reply With Quote
  #4 (permalink)  
Old September 8, 2011, 09:17 AM
enaberif's Avatar
Hall Of Fame
 
Join Date: Dec 2006
Location: Calgahree, AB
Posts: 10,605
Default

Issue with XFS is that its RAM hungry if you EVER need to do a disk check or fsck. A XFS system can easily use 6gb or more of ram where EXT3/4 file systems do not.
Reply With Quote
Reply


Tags
3ware , linux , raid , storage

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Low Microphone Volume Helix Troubleshooting 6 May 30, 2010 11:06 PM
LG Dare Volume CroSsFiRe2009 Off Topic 3 September 4, 2009 05:02 AM
Low Mic Volume in Red Alert 3? Thund3rball Audio 0 February 20, 2009 08:36 AM
Volume of fluid... 4DoorGTZ Water Cooling 8 January 19, 2009 09:20 AM
Mic Volume - Sennheiser PC 161 timbruun Audio 0 August 31, 2008 02:21 PM