On 10/14/2002 4:48 PM, Gabor Szabo wrote: >On Mon, 14 Oct 2002, Ira Abramov wrote: > > > >>>What if you setup two disks in RAID1 and pull one of the disks for >>>backup and insert new one instead? >>> >>> >>2. you will need to rebuild the mirror once it is reintegrated and thæt >>is a slow and painful process. >> >> > >how slow is it really ? >Once I build a system with software RAID 1. >I had two 36 Gig IDE disks and the rebuild time was >IIRC between 12-18 hours. > >Did I misconfigure something or is this "normal" ? > >-- Gabor > > > I have two old 15GB HDDs in RAID1 connected to ATA33 controller. The normal transfer rate is around 10MB/s. Newer HDDs with ATA100/133 controller should be much faster. You can see the transfer speed by reading /proc/mdstat when you rebuild the array.
BTW - I noticed that when the machine shuts down uncleanly it's automatically starting to rebuild the whole array, even if no data was changed. Isn't there a faster way to sync them? Sagi ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
