On 7/5/2013 7:46 PM, Christoph Anton Mitterer wrote: > On Thu, 2013-07-04 at 20:12 -0500, Stan Hoeppner wrote: ... > btw: It was interesting to see,... that all 3 different drives (from WD, > HGST, Seagate)... exported _exactly_ the same amount of space. You did state these are all enterprise class drives. >> ... I don't leave >> hot/warm/cold spares in the chassis. ... >> This simply degrades performance. > Why should it? If the spare is unused? The answer is rather obvious. If spares are in the chassis one has fewer active array spindles. >> 2. HGST is a brand created due to Western Digital's acquisition of >> Hitachi Data System's disk drive unit. > Sure... but I think they still use their own technology/firmware... at > least for now? For now. >> The drives are Hitachi's final >> production units relabeled with a different name and serial number. >> Three years from now when that HGST drive fails, Western Digital will >> replace it with a Western Digital produced drive. > Sure about that? Wasn't there some agreement that HGST belongs to WD but > produces independently...? That wouldn't make sense for either party. Where did you read this? Got a link? > and Toshiba got something from the > WD/HGST trade and already announced a 3.5" enterprise disk out of that. Toshiba has been producing 3.5" enterprise drives for years. Got a link showing that Toshiba received technology from the WD/Hitachi acquisition? >> IMO the practical disadvantages of using dissimilar drives outweighs the >> theoretical benefits. > So... which are the practical disadvantages? I already stated many of them. You don't seem to be following along very well. -- Stan -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
