AlphaServer DS20 StorageWork problem

[Vladimir Fabecic]

That is right, Michael.
Before step 4, you must execute:
# scu scan edt
Why shutdown system before inserting disk if disk is a hot swap disk? It may be done, but not important.
What if you can not obtain the same model disk as rz9?
In that case replacing is more complicated. Disk must be of same size or bigger. Lets say disk is bigger. As I can see, Informix is using partitions d, e, f and g, which are marked as raw partitions. Partitions a, b and h are marked as AdvFS, but as I can see, they are not used for advfs domains.
In that case you will have to label disk manualy. Partitions d, e, f and g must be of same size (or one block bigger) like now. Let partitions a and b be of same size too, and let partition h be from end of partition g till the end of disk. Mark partitions be be same type as original disk (but important is that partitions d, e, f and g are marked as raw).
Then you will have to copy raw partitions one by one, i. e.
# dd if=/dev/rrz9d of=/dev/rrz11d bs=1024k
# dd if=/dev/rrz9e of=/dev/rrz11e bs=1024k
# dd if=/dev/rrz9f of=/dev/rrz11f bs=1024k
# dd if=/dev/rrz9g of=/dev/rrz11g bs=1024k
But before doing anything do "export" of database so you can recreate it if something goes wrong.
I do not know much about Informix. If it was Oracle, I could help more. Maybe someone knows more about Informix.
But I think this should work.
Regards

[Michael Schulte zur Sur]

Vladimir,

that sounds good what you say.
Concerning the shutdown I just wanted to make sure that the machine is not crashed if the disk is not hot swappable.

Michael

[Marcelo Farias]

Ok friends... thanks for all
In this days I gonna to buy a new disk for the alpha server.
My only problem is we are working full day with the system. I work in Faculty of Medicine and in this time is very dificult stop the server.
My last request:
Can one of you send me a "final step a step instruction"?
We must supose that the new disk is not the same as Rz9.

Thanks for all...
I must a supper to them all :-)
Regards

Marcelo

[Michael Schulte zur Sur]

Hi,

you are quite daring to run a production system without mirroring. Are you aware that as soon as one of the disks really fails, your system is dead?

greetings,

Michael