Hi As far as I know, promise store some of its config somewhere on the hard disk (most probably in the boot sector). I noticed this when I set up a mirror with 2 hard disks on one controller and installed RH9. I swapped the controller with another one which was unconfigured and on power up it recognized the drivers as a mirror automatically so I assume it is writing something on the disks. The model I used was the TX2PRO. What I noticed is that if 1 drive fails, the system degradation is so high that it becomes unusable and you have to power down and remove 1 drive to continue working. Regards Chris -----Original Message----- From: fedora-list-admin@xxxxxxxxxx [mailto:fedora-list-admin@xxxxxxxxxx] On Behalf Of McKeever Chris Sent: 12 December 2003 08:03 To: fedora-list@xxxxxxxxxx Subject: Re: raid controller recommendation Mike, sorry I am taking this off list - if you want we can bring it back on for the education of all, but it seems to tangent from discussion..anyway I am planning on implementing a promise 6 channel raid 5 IDE card and you mentioned " Promise puts the drive hashes on the controller". I am not sure I understand this, or what the ramifications mean. At the least, i want to be able to understand what I may be getting myself into, if not try to minimize any painting myself into a corner... Any info would be appreciated.. Thanks ------------------------------------------- Chris McKeever If you want to reply directly to me, please use cgmckeever--at--prupref---dot---com http://www.prupref.com On Thu, 11 Dec 2003 15:09 , mike webster <mwebster@xxxxxxxxxxxxxxx> sent: >I've been forced to use IDE RAID due to cost and capacity. >I'm honestly not too keen on the whole IDE RAID thing, myself. Promise >puts the drive hashes on the controller, which means that if your >controller dies - you're screwed. You can't replace the controller and >get your data back. Its basically software raid, but with a controller >card. If you're doing anything mission critical, I'd really recommend >going with a "real" hardware RAID solution. Accusys makes a nice >external RAID controller (SCSI), as does Infortrend - but they don't >come cheap. If you're stuck with IDE, Promise makes their RM4000, >RM8000 and RM15000 external arrays which, in my opinion, are really >cool. Again, they aren't cheap, but really, really nice. I'm currently >using several of these. > > >Mike. > > > > >On Thu, 2003-12-11 at 15:00, Hans Müller wrote: >> Am Donnerstag 11 Dezember 2003 21:24 schrieb mike webster: >> > If you're looking for SCSI, go with adaptec. For a simple ide solution >> > with two drives I'd recommend the Promise TX-2000 card. I've written up >> > a howto: for the promise card if you'd like the link. >> > >> > Mike. >> > >> > On Thu, 2003-12-11 at 14:26, Raymond Norton wrote: >> > > I have decided to do a hardware raid rather than struggle with the >> > > software raid. What would be a good, inexpensive controller that can do >> > > raid level 1? >> when you use SCSI Vortex or Adaptec. >> when ATA or SATA then use 3ware. 3ware contolleres are seen by linux as a real >> raid conroller. The promise contoller somtimes show not the raid array but >> the disk. and when then you try to acces disk disk you can destroy your >> array. >> >> >> -- >> fedora-list mailing list >> fedora-list@xxxxxxxxxx >> To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list >> > > >-- >fedora-list mailing list >fedora-list@xxxxxxxxxx >To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list > ---- Prudential Preferred Properties www.prupref.com -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list
