[mythtv-users] Samba 3 better than NFS 3 for recording over Ethernet

Allan Stirling Dibblahmythml0015 at pendor.org
Fri Dec 30 13:08:13 EST 2005

Brad DerManouelian wrote:
> My point is that RAID 5 is *MUCH* slower than just about any other  RAID 
> config and you should expect your max speed to be half of your  fastest 
> drive.

That's not necessarily true.

Raw disk (Slower machine, but same disk):
  Timing cached reads:   1096 MB in  2.01 seconds = 545.09 MB/sec
  Timing buffered disk reads:  178 MB in  3.01 seconds =  59.13 MB/sec

  Timing cached reads:   2108 MB in  2.00 seconds = 1052.06 MB/sec
  Timing buffered disk reads:  202 MB in  3.04 seconds =  66.37 MB/sec

This is in a 8 disk (200Gb Barracuda IVs) hptmv SATA RAID5, which I believe 
MAY (despite what the FAQ says) be semi-hardware RAID.



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