Re: IDS 11.5 and SDS

On Wednesday 28 January 2009 16:47:17 you wrote: > On Jan 28, 10:14 am, TBP <th...@Usenet-News.Net> wrote: > > Tom wrote: > > > Greetings All, > > > > > > Has anyone configured IDS 11.5 with SDS on any AIX platforms? I am > > > configuring two new servers and plan on using IDS 11.5 features for HA > > > and it looks like a Shared Disk Secondary would fit the bill. However, > > > a call to IBM Informix as well as IBM AIX Software group provided no > > > info on how to configure AIX using raw LV's to meet the "Shared" disk > > > requirement for SDS to work. > > > > > > The two servers are identical P6-550's connected via SAN to an IBM > > > 2105-800. The IDS is 11.5.FC3. > > > > > > Thanks, > > > > > > Tom > > > > I can think of no "requirements" as such, only that both hosts can see > > the raw lvs (obviously) with the same paths. > > > > What requirements are you referring to?- Hide quoted text - > > > > - Show quoted text - > > The documentation as well as the Informix tech I spoke with call for > "Shared" disks. The option to create Shared VG's and Shared LV's does > not exists (that I know of) outside of HACMP, which is what I use now. > Due to the cost of HACMP and the new inherent HA options in IDS 11.5 I > want to get away from using HACMP. The end result needs to allow more > than one system to access a given LV at the same time. How do I create > such a VG and LV outside of HACMP? > > The GPFS product looks like it would allow for exactly this type of > access, but under cooked files only (the GPFS tech support joined in > on the AIX team trouble call) but this is a purchase feature, which > again adds unwanted cost to the project. The RSCT package comes with > AIX and appears to allow for such a configuration, but reading through > the manuals on RSCT this looks like a huge undertaking, creating RSCT > peer groups and whatnot, and I was hoping for a simpler solution. > > So, back to my original question. Has anyone configured IDS SDS > servers using AIX and raw disk space? Unfortunately I tried this on Linux only;-) But I think if your SAN provides the same disk to both machines you should see that disk device with same path name on both machines. For an IDS raw device you could use the plain path name of the character device, e.g.: /dev/rdevname (/dev/devname would be the equivalent block device) Andreas > > Tom > _______________________________________________ > Informix-list mailing list > Informix-list@iiug.org > http://www.iiug.org/mailman/listinfo/informix-list -- Andreas Breitfeld; Informix Development Munich IBM Deutschland Research & Development GmbH; Vorsitzender des Aufsichtsrats: Martin Jetter; Geschaeftsfuehrung: Erich Baier; Sitz der Gesellschaft: Boeblingen; Registergericht: Amtsgericht Stuttgart, HRB 243294