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GarciaRontani
New User
Joined: 04 Dec 2007
Posts: 12
Location: Argentina
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Hi Everyone, We are having this issue on one of our customers and we are trying to get a workaround solution for it that would not imply the customer to perform it's own backup/recovery in case this files were to be needed again some day.
I have datasets larger than 1,000,000 Tracks (PS Files) and more than 2 years old. After taking a look at Primary Space Management we jump into the conclusion that HSM cannot handle the migration of such monster files and that's the reason it hasn't migrated them automatically before.
Has anyone faced this problem before? Which solution did you provide??
Thanks for taking your time reading this. |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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Easy peasy .............................
make sure that a HSM backup exists for the dataset and then use
| Code: |
| HMIG 'dataset name' ML2 |
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GarciaRontani
New User
Joined: 04 Dec 2007
Posts: 12
Location: Argentina
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| Our current version of zOS Limits the number of tapes HSM can handle to 40. Unfortunately we cannot go for that.. Also defining larger scratch tapes cannot be contemplated since we need to act quite fast.. Quite the dilemma |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hello,
Or quite poor direction/management.
If the organization wants to support so few hsm tape volumes and does not want to use the high capacity volumes currently available, i suspect you need to do a one-time backup from the dasd to "tape" (i'd use the highest capacity you have or even upgrade so there is a new pool of high density media available). Over time the requirement will probably not diminish. |
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Pedro
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Joined: 01 Sep 2006
Posts: 2547
Location: Silicon Valley
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| How are the datasets used? Can the user of the data use a concatenation of smaller datasets? |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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| GarciaRontani wrote: |
| Our current version of zOS Limits the number of tapes HSM can handle to 40. |
Huh, I've been running HSM since the dawn of z/OS 1.2 and have never met this condition. Please explain. Which z/OS are you running. |
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Pete Wilson
Active Member
Joined: 31 Dec 2009
Posts: 580
Location: London
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| Yes, there a limit on the size of files able migrate. Have seen it a number of times in recent years. Might be some limit on an OCDS record or something that links the tapes together. |
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