RE: Can LTO ULTRIUM5 tapes be initialized to *ULTRIUM4 on an 8202-E4C POWER7?

You are right and I was wrong - it is an LTO4 tape. Sorry for the error.

lance


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Saturday, December 15, 2012 6:06 AM
To: Midrange Systems Technical Discussion
Subject: Re: Can LTO ULTRIUM5 tapes be initialized to *ULTRIUM4 on an 8202-E4C POWER7?

Lance, are you sure you used all LTO5 cartridges for the LTO4 initialization? If so that's new to me and I stand corrected.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 12/15/2012 8:03 AM, Jim Oberholtzer wrote:

I don't think you can initialize an LTO5 tape to LTO4 standards, you
have to use the correct cartridge for the tape density. The tape
device being an internal sled or one that is in a tape library has no real
bearing on it. The tape header which is written at the factory (and I
don't think can be overwritten) determines the density of the tape.
The color of the cartridge is for humans.

For grins I tried in on my 3573, and had the same result. Even tried
it with LTO3 and LTO2. Same thing, no joy.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 12/14/2012 5:20 PM, Eric Lehti wrote:

Do you have a POWER7 8202-E4C with the integrated single-unit tape
unit that is LTO Ultrium5?
Can you run this test for me?

Insert one of your Ultrium5 tapes.
Try to INZTAP with parm DENSITY(*ULTRIUM4) instead of *DEVTYPE.

Does it allow you to initialize your LTO Ultrium5 tape to *ULTRIUM4?

I will soon need to purchase a bunch of new tapes and have yet not
decided whether to purchase Ultrium5 or Ultrium4.

I am able to continue using our old Ultrium4 tapes because I changed
INZTAP command default from *DEVTYPE to *ULTRIUM4. (We were
previously on a 8203 POWER6 machine)

Tape capacity is not much of a consideration because we need only
one
Ultrium4 tapes for a full backup.

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