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Pools ?

Posted by Anonymous 
Pools ?
February 14, 2012 12:50PM
All,
Hello. I am curious how all of you are using pools today ? As we know pools are very flexible and as a result can be very confusing. So I am curious…

1. Do you mix device types within the same pool ? (Disk and tape devices ?)

2. Do you select multiple backup levels for one pool ? (incrementals and fulls etc.)

Please feel free to post you opinions on pools or send me a brief description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,
Skip

via RSS at [listserv.temple.edu]
Pools ?
February 14, 2012 12:52PM
Quote

1. Do you mix device types within the same pool ? (Disk and tape
devices ?)

No.

Quote

2. Do you select multiple backup levels for one pool ?
(incrementals and fulls etc.)
Yes. In my case, differentials (level 1) and FULLs.

via RSS at [listserv.temple.edu]
Pools ?
February 14, 2012 01:04PM
Skip,

I use pools. I couldn't imagine not using them.

On 02 14, 2012, at 3:39 PM, Skip Hanson wrote:

Quote

All,
Hello. I am curious how all of you are using pools today ? As we know pools are very flexible and as a result can be very confusing. So I am curious…

1. Do you mix device types within the same pool ? (Disk and tape devices ?)
No.

Quote

2. Do you select multiple backup levels for one pool ? (incrementals and fulls etc.)
Yes.

Quote

Please feel free to post you opinions on pools or send me a brief description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,
Skip

via RSS at [listserv.temple.edu]

via RSS at [listserv.temple.edu]
Pools ?
February 14, 2012 02:01PM
Skip,

I have worked with many different customers... each with their own "pool
religion" if you will..

One company I was contracted to used ONLY the DEFAULT pool. Simple yes,
but they did not have any requirement as to how long they had to keep
different kinds of data.

Other larger corporations I have worked at had very complicated pool
assignments.

LTO1full/incr
LTO2full/incr
etc...

In short for me, it has depended on variables...

What does the corporate legal beagle tell us we have to do * the square
root of the local technologist's pool religion + changing technology
over the years.

I have a monster mega question in return...

When keeping data for an extended period (20+ years) what examples do we
have out there for aged data migration plans?

Happy Valentines to my technologists on the list, get the flowers on the
way home or make sure you have a cold steak for your eye. /grin

Semper fidelis et paratus, /ALE

-----Original Message-----
From: EMC NetWorker discussion [mailto] On
Behalf Of Skip Hanson
Sent: Tuesday, February 14, 2012 3:40 PM
To: NETWORKER < at > LISTSERV.TEMPLE.EDU
Subject: [Networker] Pools ?

All,
Hello. I am curious how all of you are using pools today ? As we know
pools are very flexible and as a result can be very confusing. So I am
curious...

1. Do you mix device types within the same pool ? (Disk and tape
devices ?)

2. Do you select multiple backup levels for one pool ? (incrementals
and fulls etc.)

Please feel free to post you opinions on pools or send me a brief
description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,
Skip

type "signoff networker" in the body of the email. Please write to
networker-request < at > listserv.temple.edu if you have any problems with this
list. You can access the archives at
[listserv.temple.edu] or
via RSS at [listserv.temple.edu]

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Pools ?
February 14, 2012 02:35PM
We have a relatively small backup system. About 20 Windows servers and one Solaris system being backed up for a total of about 3.5 TB per week. All backups are directly to tape. We have 2 pools, "Backup" and "Backup Special" plus corresponding clone pools for each of them. Backup is for the normal backup cycles and Backup Special is for the Monthly archival backup and the occasional special backup we may do. I think it's best to not make it any more complex than is necessary.

Dave

Dave Werth
Garmin AT, Inc.
Salem, Oregon
-----Original Message-----
From: EMC NetWorker discussion [mailto] On Behalf Of Skip Hanson
Sent: Tuesday, February 14, 2012 12:40 PM
To: NETWORKER < at > LISTSERV.TEMPLE.EDU
Subject: [Networker] Pools ?

All,
Hello. I am curious how all of you are using pools today ? As we know pools are very flexible and as a result can be very confusing. So I am curious...

1. Do you mix device types within the same pool ? (Disk and tape devices ?)

2. Do you select multiple backup levels for one pool ? (incrementals and fulls etc.)

Please feel free to post you opinions on pools or send me a brief description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,
Skip

via RSS at [listserv.temple.edu]

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Pools ?
February 14, 2012 03:02PM
At least you should have 2 pools:
- one for the data
- one for index and bootstraps (to recover them faster, if necessary)
Pools ?
February 14, 2012 03:09PM
On 15/02/2012, at 10:02 AM, bingo wrote:

Quote

At least you should have 2 pools:
- one for the data
- one for index and bootstraps (to recover them faster, if necessary)
I have to say I *always* advise against separating indices and bootstraps off to dedicated pools.

It makes for a bunch of configuration hassles, and it also increases media contention when there is no logical reason to have separation. You don't really recover indices any faster by having them on their own devices; they're still going to be multiplexed to the same degree as backups to any other device, and by having them written to dedicated pools, you increase drive contention.

Cheers,
Preston.

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Pools ?
February 14, 2012 06:13PM
Preston,

Why not do both?

Once a day, I run a scheduled "savegrp -O" to save my employer's NetWorker server's index files and daily bootstraps to a Data Domain device, then clone them to tape for off-site storage. I also do the usual thing where each client's index files are saved after the client's backup completes. The main benefit I see is the ability to restore stuff easier in a DR site if aliens from another world swoop down on my employer's primary data center and blow it all to smithereens with a heat ray. Restoring the many index files becomes easier in a DR situation because considerably fewer tapes need to be loaded and read, plus I can pick and choose which clients' indices to restore first, if necessary.

On Feb 14, 2012, at 6:05 PM, Preston de Guise wrote:

Quote

On 15/02/2012, at 10:02 AM, bingo wrote:

Quote

At least you should have 2 pools:
- one for the data
- one for index and bootstraps (to recover them faster, if necessary)
I have to say I *always* advise against separating indices and bootstraps off to dedicated pools.

It makes for a bunch of configuration hassles, and it also increases media contention when there is no logical reason to have separation. You don't really recover indices any faster by having them on their own devices; they're still going to be multiplexed to the same degree as backups to any other device, and by having them written to dedicated pools, you increase drive contention.

Cheers,
Preston.

via RSS at [listserv.temple.edu]

via RSS at [listserv.temple.edu]
Pools ?
February 14, 2012 08:55PM
Skip

We have had to setup a lot of different configurations for customers
depending upon their business requirements.

Some customers have come up with bazaar reasons for their pool
configurations. You end up having a debate with a "die hard" "sock and
sandal" wearing SCO enthusiast. (My apologies if I have offended someone)

Some of these reasons include;

* Different drive models within a silo

* Different retention on clone pools

* Snapshots (this was historical due to the Powersnap metadata
saveset's preventing media recycling)

* Media retention (Daily, Weekly, Monthly, Annual etc)

Some customers use LTO4 for daily's, the LTO5 tapes for Monthly. Cost
savings.

* NetWorker archiving feature. (Yes one of our customers still uses
this feature)

* WORM Tapes

* Differentiating levels. i.e. Log backups every 1 hour with a short
retention policy

Regards

Richard

-----Original Message-----
From: EMC NetWorker discussion [mailto] On
Behalf Of Skip Hanson
Sent: Wednesday, 15 February 2012 9:40 a.m.
To: NETWORKER < at > LISTSERV.TEMPLE.EDU
Subject: [Networker] Pools ?

All,

Hello. I am curious how all of you are using pools today ? As we know
pools are very flexible and as a result can be very confusing. So I am
curious.

1. Do you mix device types within the same pool ? (Disk and tape devices
?)

2. Do you select multiple backup levels for one pool ? (incrementals and
fulls etc.)

Please feel free to post you opinions on pools or send me a brief
description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,

Skip

"signoff networker" in the body of the email. Please write to
networker-request < at > listserv.temple.edu if you have any problems with this
list. You can access the archives at
[listserv.temple.edu] or

via RSS at [listserv.temple.edu]

via RSS at [listserv.temple.edu]
Pools ?
February 14, 2012 11:44PM
Le 14/02/2012 21:39, Skip Hanson a écrit :
Quote

All,
Hello. I am curious how all of you are using pools today ? As we know pools are very flexible and as a result can be very confusing. So I am curious…

1. Do you mix device types within the same pool ? (Disk and tape devices ?)
Yes and it's a very bad idea ! (SDLT and LTO4 )
We have to put the sdlt devices "desabled" all the time
and turn them enable when we have to do a recover.

Claude

Quote

2. Do you select multiple backup levels for one pool ? (incrementals and fulls etc.)

Please feel free to post you opinions on pools or send me a brief description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,
Skip

via RSS at [listserv.temple.edu]

via RSS at [listserv.temple.edu]
Pools ?
February 15, 2012 06:00AM
Quote

We have a relatively small backup system. About 20 Windows servers
and one Solaris system being backed up for a total of about 3.5 TB
per week. All backups are directly to tape. We have 2 pools,
"Backup" and "Backup Special" plus corresponding clone pools for
each of them. Backup is for the normal backup cycles and Backup
Special is for the Monthly archival backup and the occasional
special backup we may do. I think it's best to not make it any more
complex than is necessary.
I have about 140 clients. :-) And I have 4 pools - a PRD (Production pool
- basically non-clone, straight to tape), a CLONE pool, a pool for AFTD
devices (which is what gets cloned), and a separate pool for bootstraps
and client file indexes.

I don't have separate pools for end of month runs - I run a script that
queries the savesets for the specific date range for the EOMs, and changes
the retention dates to be +7 years, and marks the tapes those savesets are
on as READ-ONLY. We do daily differentials and Friday FULLs for almost
everything. The CLONE jobs are all SQL server backups, using the SQL
Module, and those are all FULL (we don't like incremental SQL backups).

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Pools ?
February 15, 2012 06:57AM
Claude,

Depending on how long you have to keep the data, have you considered data migration to current technology media?

Clone from sdlt -> lto5.

Semper fidelis et paratus, /ALE

-----Original Message-----
From: EMC NetWorker discussion On Behalf Of Claude Discala-Verdier

Le 14/02/2012 21:39, Skip Hanson a écrit :
Quote

All,
Hello. I am curious how all of you are using pools today ? As we know pools are very flexible and as a result can be very confusing. So I am curious...

1. Do you mix device types within the same pool ? (Disk and tape devices ?)
Yes and it's a very bad idea ! (SDLT and LTO4 )
We have to put the sdlt devices "desabled" all the time
and turn them enable when we have to do a recover.

Claude

Quote

2. Do you select multiple backup levels for one pool ? (incrementals and fulls etc.)

Please feel free to post you opinions on pools or send me a brief description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,
Skip

via RSS at [listserv.temple.edu]
Pools ?
February 15, 2012 07:10AM
We have very old data that we want to keep and be able to recover ( not
very often )
it's not mandatory to clone them on lto ( --> only on sdlt),
we have archive on sdlt, we clone them on lto4
and we have bakcup, clone, archive on lto4

not yet lto5 ...

Thanks
Claude

Le 15/02/2012 15:54, Eddie Albert a écrit :
Quote

Claude,

Depending on how long you have to keep the data, have you considered data migration to current technology media?

Clone from sdlt -> lto5.

Semper fidelis et paratus, /ALE

-----Original Message-----
From: EMC NetWorker discussion On Behalf Of Claude Discala-Verdier

Le 14/02/2012 21:39, Skip Hanson a écrit :
Quote

All,
Hello. I am curious how all of you are using pools today ? As we know pools are very flexible and as a result can be very confusing. So I am curious...

1. Do you mix device types within the same pool ? (Disk and tape devices ?)
Yes and it's a very bad idea ! (SDLT and LTO4 )
We have to put the sdlt devices "desabled" all the time
and turn them enable when we have to do a recover.

Claude

Quote

2. Do you select multiple backup levels for one pool ? (incrementals and fulls etc.)

Please feel free to post you opinions on pools or send me a brief description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,
Skip
via RSS at [listserv.temple.edu]

via RSS at [listserv.temple.edu]
Pools ?
February 15, 2012 07:12AM
Wow... that is actually a GREAT idea...

LTO3 for daily/weekly
LTO4 for Weekly/monthly
LTO5 for Monthly/Forever

I never thought of that... Of course you may have to base that on how
many of each drive type you have and how much of each data type you need
to backup, etc.

P.S. LOL everyone knows SCO guys don't wear socks. Not that there is
anything wrong with that. /grin

Semper fidelis et paratus, /ALE

-----Original Message-----
From: EMC NetWorker discussion [mailto] On
Behalf Of Richard Hoare
Sent: Tuesday, February 14, 2012 11:52 PM
To: NETWORKER < at > LISTSERV.TEMPLE.EDU
Subject: Re: [Networker] Pools ?

Skip

We have had to setup a lot of different configurations for customers
depending upon their business requirements.

Some customers have come up with bazaar reasons for their pool
configurations. You end up having a debate with a "die hard" "sock and
sandal" wearing SCO enthusiast. (My apologies if I have offended
someone)

Some of these reasons include;

* Different drive models within a silo

* Different retention on clone pools

* Snapshots (this was historical due to the Powersnap metadata
saveset's preventing media recycling)

* Media retention (Daily, Weekly, Monthly, Annual etc)

Some customers use LTO4 for daily's, the LTO5 tapes for Monthly. Cost
savings.

* NetWorker archiving feature. (Yes one of our customers still
uses
this feature)

* WORM Tapes

* Differentiating levels. i.e. Log backups every 1 hour with a
short
retention policy

Regards

Richard

-----Original Message-----
From: EMC NetWorker discussion [mailto] On
Behalf Of Skip Hanson
Sent: Wednesday, 15 February 2012 9:40 a.m.
To: NETWORKER < at > LISTSERV.TEMPLE.EDU
Subject: [Networker] Pools ?

All,

Hello. I am curious how all of you are using pools today ? As we know
pools are very flexible and as a result can be very confusing. So I am
curious.

1. Do you mix device types within the same pool ? (Disk and tape
devices
?)

2. Do you select multiple backup levels for one pool ? (incrementals
and
fulls etc.)

Please feel free to post you opinions on pools or send me a brief
description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,

Skip

type
"signoff networker" in the body of the email. Please write to
networker-request < at > listserv.temple.edu if you have any problems with this
list. You can access the archives at
[listserv.temple.edu] or

via RSS at [listserv.temple.edu]

type "signoff networker" in the body of the email. Please write to
networker-request < at > listserv.temple.edu if you have any problems with this
list. You can access the archives at
[listserv.temple.edu] or
via RSS at [listserv.temple.edu]

via RSS at [listserv.temple.edu]
Pools ?
February 16, 2012 12:46AM
Hello,

about 180 clients (aix, linux, solaris, windows), and LTO3 drives.

We do not mix device types.
We use pools depending on retention data we keep for clients (all clients with the same retention are going to the same pool), whatever backup level.
We have also 3 specific pools in order to store data 'offsite'.

Denis

----- Mail original -----
De: "Skip Hanson" <skip.hanson < at > EMC.COM>
À: NETWORKER < at > LISTSERV.TEMPLE.EDU
Envoyé: Mardi 14 Février 2012 21:39:53
Objet: [Networker] Pools ?

All,
Hello. I am curious how all of you are using pools today ? As we know pools are very flexible and as a result can be very confusing. So I am curious…

1. Do you mix device types within the same pool ? (Disk and tape devices ?)

2. Do you select multiple backup levels for one pool ? (incrementals and fulls etc.)

Please feel free to post you opinions on pools or send me a brief description about how you use them.

networker_usability < at > emc.com<mailto:networker_usability < at > emc.com>

Cheers,
Skip

via RSS at [listserv.temple.edu]

via RSS at [listserv.temple.edu]
Pools ?
February 16, 2012 11:36AM
I think the two of you should collaborate on a Networker Website with
all the cheats, codes and FAQs that you use for your sites and encourage
others to build on it. Make it an OPEN SOURCE type project (meaning let
it grow grass roots style)...

Probably something already like this...

Semper fidelis et paratus, /ALE

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