Thank you all for attending the webinar on IASP’s in Application Management. Time ran short and we didn’t get to all of your questions, but we’ve posted the full list here. If you missed the webinar you can still get the slides.
Nick and Alistair have graciously agreed to answer any more questions you submit, so let’s continue the conversation in the comment section below.
Q: How long does it generally take to set up and iASP environment and then get your applications over to the IASP
A: Nick said “You can create an independent ASP… well if you’ve got the disk available you can create the actual environment in minutes! It’s just like adding more disk to an environment. Alistair, how long does your install process for Express take?
“The install takes minutes, because we have the options for you to choose where to install and then under the covers it just goes ahead and does it,” said Alistair
So this would be just like if I had a laptop and plugged in a external drive in it and I selected customize and I was going to install it on that application on the external drive rather than my C drive. So very quick is the answer to that.
Q: Can you have the application running in one environment and the data in another?
A: Yes you can. There are certain constraints about where you’ve got to put pieces, but generally you can run the code, the programs, and so on in one asp and the data in another.
Q: Will the slides and recording be available? When?
A: Slides are ready now! View or download them here. The recording link will be emailed to all participants by Monday.
Q: When I use iSeries Encryption, is the data encrypted when the disk drive is removed from the system?
A: When IBM I software encryption is used all of the IASP is encrypted, therefore any data on the pulled disk would be encrypted. This encryption does burn CPU cycles, so it should be sized correctly. If a disk is removed, the objects on disk are encrypted. If you are considering encryption, I would recommend disk based encryption available with DS8870 as it has no impact on the server CPU.
Q: How are applications that don’t officially support iASP handled? Other than replacing them, that is.
A: You should contact your Application provider. Many IBM I applications are supported to run in an IASP/PowerHA environment. Often, lack of support is either lack of testing by the ISV or they only support IASP at a certain level of their Application. Customers have often tested themselves and found the application runs in an IASP. You should contact IBM Lab Services, Rochester.
Q: If I have the iASP on the JOBD for the User Profile and the iASP is not on line what happens when the user tries to sign on?
A: If the user tries to sign-on, this sign-on will fail.
Q: Disk is not cheap to lease. Replication is still bandwith dependent when your copy is remote. What’s the ballpark cost of this?
A: We have no idea, the bandwidth is dependent on the rate of change of the source disk. For Storwize family since 7.2 there is the option to use Native IP replication, which includes WAN Acceleration. This can reduce the cost of the replication. Lab Services Rochester has a service offering to estimate the bandwidth required for replication.
Q: How much acceptance have you seen from other software vendors? Many we’ve found state they don’t support iASP.
A: Acceptance of IASP and PowerHA is very high in IBM i ISVs. Most of the large ISVs support IASP, for example SAP have been there since day one. As previously stated many ISVs only support IASPs in their more recent releases of their applications.
Q: Is all of the iASP/Metro-Global/PowerHA technology available with EMC external disk arrays?
A: No. EMC have limited support for PowerHA SystemMirror for IBM I and no integration as there is no DSCLI. EMC’s current VMAX3 does not support mainframe. IBM i and IBM System Storage have unique integration through DSCLI and IBM Lab Services.
Q: What happens if your backup system shuts down?
A: The production environment keeps running as normal. PowerHA Cluster Services is aware the remote backup system or IASP is not available. If the backup IBM i partition is down, but the backup storage device is up and running, IO is still flowing to the remote IASP. But you would not be able to switch over until the backup partition is running again.
If the storage where the remote IASP is located is down, again cluster services would know this and you would not be able to switch over.
If this were in a full system replication environment, the back partition is always powered down until you switch over. If the backup storage device is up, and running it will be receiving IO in readiness for a recovery.