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ADVISORY: HP Data Protector - HP-UX system splits the data block size greater than 256kb during the Data Protector backup to smaller data block size of 256kb

SUPPORT COMMUNICATION - CUSTOMER ADVISORY

Document ID: c02256887

Version: 1

ADVISORY: HP Data Protector - HP-UX system splits the data block size greater than 256kb during the Data Protector backup to smaller data block size of 256kb
NOTICE: The information in this document, including products and software versions, is current as of the Release Date. This document is subject to change without notice.

Release Date: 2010-06-21

Last Updated: 2010-06-24


DESCRIPTION

This advisory provides information about the risk involved in using the data block size greater than 256kb on an HP-UX 11i v3* and previous versions of HP-UX.

On an HP-UX system if the data block size is set greater than 256kb, the HP-UX (stape) driver internally splits the data block size to 256kb and the Data Protector restore job fails with the following error message:

|Warning| From: RMA@domain.com "HP:Ultrium" <Date><Time>

|90:141| Partial read of a block.

The backup session executed to append the data to the same media fails with the following error message:

|Critical| From: BMA@domain.com "HP:Ultrium" <Date><Time>

|90:52| /dev/

Cannot read from device (Invalid medium data format.)

|Major| From: BMA@domain.com "HP:Ultrium" <Date><Time>

|90:65| /dev/

Cannot append to medium (Invalid medium data format.

In both the cases the media is marked as poor after the session completes.

SCOPE

HP Data Protector v6.0, v6.1, v6.11

RESOLUTION

HP does not recommend to use block size greater than 256kb on HP-UX 11i v3* and its previous versions.


Hardware Platforms Affected: Not Applicable
Components Affected: Not Applicable
Operating Systems Affected: Not Applicable
Software Affected: Not Applicable
Third Party Products Affected: Not Applicable
Support Communication Cross Reference ID: IA02256887
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Document title: ADVISORY: HP Data Protector - HP-UX system splits the data block size greater than 256kb during the Data Protector backup to smaller data block size of 256kb
Document ID: emr_na-c02256887-1
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