spare server and data mirroring

Hi everybody, I want to make a spare db server installation, for disaster recovery purposes, and I'm looking for advices. Our present setup is a single HP-UX machine, running IDS 7.31, all important filesystems and all database chunks are mirrored on two IBM disk arrays, placed in separate locations. Mirroring on the LVM level (no Informix mirrornig is used, OS is HP-UX 11.11). My very rough idea is to add a spare server in the remote location, install Informix software there, configure it to access appropriate filesystems and db chunks, and leave it off, so in case of a disaster in the primary site I could just start IDS on that spare server and have the database available there. No clustering software is available, so switching will be done manually. Does it look reasonable? I'm concerned about data mirroring. If the primary site fails, so that spare server will be enabled and our work will be continued there, and later we want to switch back to the primary site, will the data be synchronized in the correct direction, from that remote copy to the local one? Is there any risk here, that it could go wrong way, and if so, what should take care of to prevent against that? Is the LVM mirroring a safe solution to mirror a database chunks? Are there any licence issues, if the second server will never be up together with the first one, only one copy of the IDS software runnig at any given time? I know this is not a very clean idea, but I have to provide a solution using those available resources. Thanks in advance for any advices. Regards Pawe

Pawel Paron said: > > Hi everybody, > > I want to make a spare db server installation, for disaster recovery > purposes, and I'm looking for advices. Our present setup is a single HP-UX > machine, running IDS 7.31, all important filesystems and all database > chunks > are mirrored on two IBM disk arrays, placed in separate locations. > Mirroring > on the LVM level (no Informix mirrornig is used, OS is HP-UX 11.11). My > very > rough idea is to add a spare server in the remote location, install > Informix > software there, configure it to access appropriate filesystems and db > chunks, and leave it off, so in case of a disaster in the primary site I > could just start IDS on that spare server and have the database available > there. No clustering software is available, so switching will be done > manually. Does it look reasonable? > > I'm concerned about data mirroring. If the primary site fails, so that > spare > server will be enabled and our work will be continued there, and later we > want to switch back to the primary site, will the data be synchronized in > the correct direction, from that remote copy to the local one? Is there > any > risk here, that it could go wrong way, and if so, what should take care of > to prevent against that? Is the LVM mirroring a safe solution to mirror a > database chunks? > > Are there any licence issues, if the second server will never be up > together > with the first one, only one copy of the IDS software runnig at any given > time? > > I know this is not a very clean idea, but I have to provide a solution > using > those available resources. Thanks in advance for any advices. HDR is your friend. -- Bye now, Obnoxio Information within this post contains forward looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21B of the S E C Act of 1934. Statements that involve discussions with respect to projections of future events are not statements of historical fact and may be forward looking statements. Don't rely on them to make a decision. The poster is not a reporting company registered under the Exchange Act of 1934. I have received a life peerage from Her Majesty, who is not an officer, minister or affiliate Labour party member. I intend to recover my loan now, which could cause the parliamentary majority to go down, resulting in losses for you. Today's Labour party has: an accumulated deficit and a reliance on loans from officers and affiliates to pay expenses. It is not an operating political party. The party is going to need financing to continue as a going concern. A failure to finance could cause the party to go out of business. This report shall not be construed as any kind of investment advice or solicitation. You can lose all your money by investing in this party.