[mythtv-users] WAY OT: Storage designs

[Scott]

On Aug 30, 2010, at 6:25 PM, David Scammell wrote:
> iSCSI:
> no performance figures, i'm sorry, in my tests about a couple of years
> ago NFSv3 vs. iscsi, iscsi won hands down.

I'm not to shocked to hear this. But for a home server, is it really needed? I went the other direction and setup a Linux NAS serving data over both AFP (Time Machine backups and general Apple file sharing storage) and NFSv3 (MythTV BE storage for ISOs). To keep heat and noise down I decided on using only 5400 RPM drives. I configured 8 of them in a RAID6 array. 

From the MythTV BE a single threaded write over NFS  to the array from /dev/zero gives me an average 88MB/s. A single threaded read over NFS from the array gives me 30MB/s oddly enough. I mention it's odd because a single threaded file read over AFP of the same file shows 75MB/s from the array. Clearly something is not optimal in my Linux MythTV BE NFS read performance. Still, 30MB/s read and 88MB/s write is easily good enough for streams.

--
Regards,
Scott Russell