09-14-2007 04:52 AM
09-16-2007 11:33 PM
Upgrading 9GB to 18GB discs means replacing discs. Replacing discs in volume sets involves volume sets reload.
Make sure your OS level supports the 18GB discs. Take a look at the drivers' file called IODFAULT.PUB.SYS. If the 18GB discs driver's name (or SYSGEN ID) is in that file, the server's OS level is supporting the drive.
ITRC Technical Knowledge Base has many documents providing instructions to reload volume sets. Reloading a system volume set has extra steps than reloading an user volume set.
Document ID: emr_na-c00902679-3 MPE/iX - System Installation and Recovery Guidelines.
Document ID: MPEKBRC00000565 How to 'reload' an MPE XL USER VOLUME SET.
09-17-2007 07:13 AM
If you are going to larger disks, I'd also recommend you look at upgrading your back-up capabilities at the same time. Larger disks means the the amount of data to be backed up is likeley to grow as well. The backup device drivers are also in a section of IODFAULT. last caveat is to make sure that if you upgrade your backup medium, you can read older media as well. Finding the device numbers in IODFAULT is the key to everything.
09-17-2007 09:13 AM
09-18-2007 10:10 PM
I checked A5286A; it's an 18GB DF 72K Disk Module. Either ST318275LC or ST318436LC will work; both driver names have the same attributes.
If you want SYSGEN to have the ID which matches your 18GB drives, you may want to install the drives and run ODE at the ISL> prompt, then run MAPPER or MAPPER2 (for A/N-class servers) at the ODE> prompt. MAPPER or MAPPER2 will tell.
09-21-2007 01:04 AM
Go in SYSGEN and run sysgen>io, then io>ld. This command will list all IO configuration devices including discs. Each SCSI interface card has an unique HW address; to simplify, a HW address path has 3 major components : BUS addr, Card addr, Device addr. For Disc Array configuration, there is also concept of LUN.
The BUS addr is different from one server to another.
For an 9x8 server:
56/52 is the Bus (56)/SCSI Card HW addr (52)
6.0 is the SCSI Device HW addr
56/40 is the Bus (56)/SCSI card (40) HW addr
5.0 is the SCSI Device HW addr
For an 9x9KS server:
On the rear of the server, there is a map of all the I/O slots
10/4/20 is the Bus (10/4)/SE SCSI (20) HW addr
0.0 is the SE SCSI Device HW addr
10/4/24 is the Bus (10/4)/FW SCSI (24) HW addr
6.0 is the FW SCSI Device HW addr
So for example, if your server is an 969KS, the mirrored discs must be on separate SCSI cards, the SYSGEN IO configuration may look like this:
where 10/4 is the Bus address for an 969KS, next 4 or 8 is the card hw addr, finally, 6.0, 5.0, 4.0 are the discs HW addr.
The 3 discs that are connected to 10/4/4 are mirrored to the 3 discs that are connected to 10/4/8.