Dear colleagues:

I am backing up the database (Informix 7.31 TD6) to tape and disk.

Until last week there had been no issues, except that the tapes occasionally slowed down.

Today I have found that both the tapes and the copies on disk are very slow. In addition, ONTAPE reached 50% and stopped there, without throwing any error or warning messages.

Example: The tapes took approximately 15 minutes to copy everything. And the discs took longer, up to 50 minutes, but not more than that.

For three months I have been copying on the same tapes and discs. I have 10 tapes, and I make one backup in the morning and one in the evening, so each tape is identified as 01-Monday-Morning, 02-Monday-Night, and so on until Friday.
In the case of disk backup, I have two disks, and in one I make the copy at noon and in the other at night.
Could it have happened that the discs have deteriorated and filled the tapes?

Thank you in advance for your attention.

Greetings!

Gustavo

Gustavo:

It is not clear whether the issue is that ontape is slow or that copying the archive files around is slow?

One thing, the occasional slow archives are mainly because you are using an truly ancient release of Informix. There was a bug of sorts in the archive process which was fixed in a later release of 7.31 (no longer available) that caused archives to take MUCH longer than usual if the "timestamp" on pages on disk had wrapped past 2^31 causing ontape to stop what it was doing to update the timestamp on all "older" pages with high timestamp values (necessary to make level 2 and level 3 archives to work properly). That algorithm was later changed so that no longer happens. But I'm not sure that is what you are referring to in this post.

It goes without saying that you should probably upgrade to a supported version of Informix. The current release is v14.10.FC10 which is probably 2X+ faster with tons of features. 

Art

Dear colleagues:

I am backing up the database (Informix 7.31 TD6) to tape and disk.

Until last week there had been no issues, except that the tapes occasionally slowed down.

Today I have found that both the tapes and the copies on disk are very slow. In addition, ONTAPE reached 50% and stopped there, without throwing any error or warning messages.

Example: The tapes took approximately 15 minutes to copy everything. And the discs took longer, up to 50 minutes, but not more than that.

For three months I have been copying on the same tapes and discs. I have 10 tapes, and I make one backup in the morning and one in the evening, so each tape is identified as 01-Monday-Morning, 02-Monday-Night, and so on until Friday.
In the case of disk backup, I have two disks, and in one I make the copy at noon and in the other at night.
Could it have happened that the discs have deteriorated and filled the tapes?

Thank you in advance for your attention.

Greetings!

Gustavo

Hello Art!

I'm sorry I wasn't more clear in my explanation.

Until last Friday I had been making backup copies with ONTAPE on tapes and disks.

The speed of the tapes was good, they completed a backup of almost 300 GB in 20 minutes, and the disks in 50 minutes.

I was very happy with that, but since Monday, ONTAPE reaches 50% and it takes a long, long time until it continues to advance. In the case of discs, it remains at that percentage for at least 3 and a half hours.

Gustavo:

It is not clear whether the issue is that ontape is slow or that copying the archive files around is slow?

One thing, the occasional slow archives are mainly because you are using an truly ancient release of Informix. There was a bug of sorts in the archive process which was fixed in a later release of 7.31 (no longer available) that caused archives to take MUCH longer than usual if the "timestamp" on pages on disk had wrapped past 2^31 causing ontape to stop what it was doing to update the timestamp on all "older" pages with high timestamp values (necessary to make level 2 and level 3 archives to work properly). That algorithm was later changed so that no longer happens. But I'm not sure that is what you are referring to in this post.

It goes without saying that you should probably upgrade to a supported version of Informix. The current release is v14.10.FC10 which is probably 2X+ faster with tons of features. 

Art

Dear colleagues:

I am backing up the database (Informix 7.31 TD6) to tape and disk.

Until last week there had been no issues, except that the tapes occasionally slowed down.

Today I have found that both the tapes and the copies on disk are very slow. In addition, ONTAPE reached 50% and stopped there, without throwing any error or warning messages.

Example: The tapes took approximately 15 minutes to copy everything. And the discs took longer, up to 50 minutes, but not more than that.

For three months I have been copying on the same tapes and discs. I have 10 tapes, and I make one backup in the morning and one in the evening, so each tape is identified as 01-Monday-Morning, 02-Monday-Night, and so on until Friday.
In the case of disk backup, I have two disks, and in one I make the copy at noon and in the other at night.
Could it have happened that the discs have deteriorated and filled the tapes?

Thank you in advance for your attention.

Greetings!

Gustavo

Hello Art!

I'm sorry I wasn't more clear in my explanation.

Until last Friday I had been making backup copies with ONTAPE on tapes and disks.

The speed of the tapes was good, they completed a backup of almost 300 GB in 20 minutes, and the disks in 50 minutes.

I was very happy with that, but since Monday, ONTAPE reaches 50% and it takes a long, long time until it continues to advance. In the case of discs, it remains at that percentage for at least 3 and a half hours.

Gustavo:

It is not clear whether the issue is that ontape is slow or that copying the archive files around is slow?

One thing, the occasional slow archives are mainly because you are using an truly ancient release of Informix. There was a bug of sorts in the archive process which was fixed in a later release of 7.31 (no longer available) that caused archives to take MUCH longer than usual if the "timestamp" on pages on disk had wrapped past 2^31 causing ontape to stop what it was doing to update the timestamp on all "older" pages with high timestamp values (necessary to make level 2 and level 3 archives to work properly). That algorithm was later changed so that no longer happens. But I'm not sure that is what you are referring to in this post.

It goes without saying that you should probably upgrade to a supported version of Informix. The current release is v14.10.FC10 which is probably 2X+ faster with tons of features. 

Art

Dear colleagues:

I am backing up the database (Informix 7.31 TD6) to tape and disk.

Until last week there had been no issues, except that the tapes occasionally slowed down.

Today I have found that both the tapes and the copies on disk are very slow. In addition, ONTAPE reached 50% and stopped there, without throwing any error or warning messages.

Example: The tapes took approximately 15 minutes to copy everything. And the discs took longer, up to 50 minutes, but not more than that.

For three months I have been copying on the same tapes and discs. I have 10 tapes, and I make one backup in the morning and one in the evening, so each tape is identified as 01-Monday-Morning, 02-Monday-Night, and so on until Friday.
In the case of disk backup, I have two disks, and in one I make the copy at noon and in the other at night.
Could it have happened that the discs have deteriorated and filled the tapes?

Thank you in advance for your attention.

Greetings!

Gustavo

Hello Art!

I'm sorry I wasn't more clear in my explanation.

Until last Friday I had been making backup copies with ONTAPE on tapes and disks.

The speed of the tapes was good, they completed a backup of almost 300 GB in 20 minutes, and the disks in 50 minutes.

I was very happy with that, but since Monday, ONTAPE reaches 50% and it takes a long, long time until it continues to advance. In the case of discs, it remains at that percentage for at least 3 and a half hours.

Gustavo:

It is not clear whether the issue is that ontape is slow or that copying the archive files around is slow?

One thing, the occasional slow archives are mainly because you are using an truly ancient release of Informix. There was a bug of sorts in the archive process which was fixed in a later release of 7.31 (no longer available) that caused archives to take MUCH longer than usual if the "timestamp" on pages on disk had wrapped past 2^31 causing ontape to stop what it was doing to update the timestamp on all "older" pages with high timestamp values (necessary to make level 2 and level 3 archives to work properly). That algorithm was later changed so that no longer happens. But I'm not sure that is what you are referring to in this post.

It goes without saying that you should probably upgrade to a supported version of Informix. The current release is v14.10.FC10 which is probably 2X+ faster with tons of features. 

Art

Dear colleagues:

I am backing up the database (Informix 7.31 TD6) to tape and disk.

Until last week there had been no issues, except that the tapes occasionally slowed down.

Today I have found that both the tapes and the copies on disk are very slow. In addition, ONTAPE reached 50% and stopped there, without throwing any error or warning messages.

Example: The tapes took approximately 15 minutes to copy everything. And the discs took longer, up to 50 minutes, but not more than that.

For three months I have been copying on the same tapes and discs. I have 10 tapes, and I make one backup in the morning and one in the evening, so each tape is identified as 01-Monday-Morning, 02-Monday-Night, and so on until Friday.
In the case of disk backup, I have two disks, and in one I make the copy at noon and in the other at night.
Could it have happened that the discs have deteriorated and filled the tapes?

Thank you in advance for your attention.

Greetings!

Gustavo