upgrade my disc drives from 9 gig to 18 gig (125 Views)
Reply
Advisor
kevin h_2
Posts: 49
Registered: ‎04-16-2007
Message 1 of 7 (125 Views)
Accepted Solution

upgrade my disc drives from 9 gig to 18 gig

I need to upgrade my disc drives from 9 gig to 18 gig, model A5286A - Differential Fast/Wide SCSI. We currently have seven volume sets. What are the steps involved to accomplish this?

Thanks,
Kevin
Please use plain text.
Honored Contributor
Kwan Fong, Emile
Posts: 1,162
Registered: ‎07-10-2000
Message 2 of 7 (125 Views)

Re: upgrade my disc drives from 9 gig to 18 gig

Hello Kevin,

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.
King is the customer!
Please use plain text.
Honored Contributor
Chuck Ciesinski
Posts: 830
Registered: ‎10-03-2000
Message 3 of 7 (125 Views)

Re: upgrade my disc drives from 9 gig to 18 gig

Kevin,

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.

Chuck Ciesinski

"Show me the $$$$$"
Please use plain text.
Advisor
kevin h_2
Posts: 49
Registered: ‎04-16-2007
Message 4 of 7 (125 Views)

Re: upgrade my disc drives from 9 gig to 18 gig

I have several 18 gig drives, model A5286A, however, in the IODFAULT file it lists two different ID's. One is ST318275LC and the other is ST318436LC. How do I know which ID I have?
Please use plain text.
Honored Contributor
Kwan Fong, Emile
Posts: 1,162
Registered: ‎07-10-2000
Message 5 of 7 (125 Views)

Re: upgrade my disc drives from 9 gig to 18 gig

Hello Kevin,

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.
King is the customer!
Please use plain text.
Advisor
kevin h_2
Posts: 49
Registered: ‎04-16-2007
Message 6 of 7 (125 Views)

Re: upgrade my disc drives from 9 gig to 18 gig

Emile,

thanks for your help. I have also read that the mirrored drives need to be on their own interface card. How do I tell this on our system here?
Please use plain text.
Honored Contributor
Kwan Fong, Emile
Posts: 1,162
Registered: ‎07-10-2000
Message 7 of 7 (125 Views)

Re: upgrade my disc drives from 9 gig to 18 gig

Hi Kevin,

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.

Examples:

For an 9x8 server:
=================

56/52.6.0

56/52 is the Bus (56)/SCSI Card HW addr (52)
6.0 is the SCSI Device HW addr

56/40.5.0

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

10/4/20.0.0

10/4/20 is the Bus (10/4)/SE SCSI (20) HW addr
0.0 is the SE SCSI Device HW addr

10/4/24.6.0

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:

10/4/4.6.0
10/4/4.5.0
10/4/4.4.0

10/4/8.6.0
10/4/8.5.0
10/4/8.4.0

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.
King is the customer!
Please use plain text.
The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation