Backup strategy

Backup strategy

Post by Larry Wahler » Sun, 18 Aug 2002 03:52:12



E55, SP4, on Win2K. It's a big fast, dual-processor, 1 gig memory machine
that will have only 125 users on it. So, we did a RAID-5 array with 5 18 Gig
disks. System is on C, a 4-gig partition, the 2-gig pagefile is on another
disk, and the rest (about 64 Gig) is all for Exchange. I installed on C (of
course), and in PerfWiz, I decided to just move all the stuff Perfwiz would
move, to the big 64 Gig partition. We do full backups of the system
partition every Friday night, and full Exchange backups every night,
Mon-Fri. We did a full Ghost image of the entire 5-disk array after
Exchange, Veritas, Norton, etc., were all installed and configured.

The system admins say that in case of disaster, our recovery strategy is
this:

1. Restore the Ghost image.
2. Restore the system from last Friday's backup.
3. Restore Exchange from previous night's backup.

That all sounds reasonable to me, except for the MTA and IMS files. Do I
even need to be concerned about these files? If so, and we're using Veritas
with the Exchange agent (even doing mailbox backups, too), how do I do it?
Should I have maybe just left these on C?

The reason I moved them all is, that gives me 64 Gig of space for all the
stuff that's likely to get big, including the three stores, the two sets of
logs, the mail files and internet mail service files. But maybe I should
have left the last two on C. I don't know.

Thanks in advance for any advice you can give, kind and gentle (and more
knowledgable) folks.

--
=================================
Larry Wahlers, Systems Specialist
Office of Information Systems
The Lutheran Church--Missouri Synod

 
 
 

Backup strategy

Post by Martin Blackston » Sun, 18 Aug 2002 23:22:00


Have you tested this restore strategy on the server? Restoring an Exchange
server is not like restoring a file server.

Ideally  for the best DR and performance, you should have taken the five
disks and done as follows.
2 in a mirror for the OS and logs.
3 in a RAID 5 for the information store.
This way if the array with the OS and logs blows, you still have the IS.
Vice versa for the system drives. You also get better performance from the
server.

As for backups, please be sure you have read the MS Exchange DR whitepaper.
http://www.microsoft.com/exchange/techinfo/administration/55/BackupRe...
sp

--
Martin Blackstone
Exchange FAQ: http://www.swinc.com/resource/exchange.htm


Quote:> E55, SP4, on Win2K. It's a big fast, dual-processor, 1 gig memory machine
> that will have only 125 users on it. So, we did a RAID-5 array with 5 18
Gig
> disks. System is on C, a 4-gig partition, the 2-gig pagefile is on another
> disk, and the rest (about 64 Gig) is all for Exchange. I installed on C
(of
> course), and in PerfWiz, I decided to just move all the stuff Perfwiz
would
> move, to the big 64 Gig partition. We do full backups of the system
> partition every Friday night, and full Exchange backups every night,
> Mon-Fri. We did a full Ghost image of the entire 5-disk array after
> Exchange, Veritas, Norton, etc., were all installed and configured.

> The system admins say that in case of disaster, our recovery strategy is
> this:

> 1. Restore the Ghost image.
> 2. Restore the system from last Friday's backup.
> 3. Restore Exchange from previous night's backup.

> That all sounds reasonable to me, except for the MTA and IMS files. Do I
> even need to be concerned about these files? If so, and we're using
Veritas
> with the Exchange agent (even doing mailbox backups, too), how do I do it?
> Should I have maybe just left these on C?

> The reason I moved them all is, that gives me 64 Gig of space for all the
> stuff that's likely to get big, including the three stores, the two sets
of
> logs, the mail files and internet mail service files. But maybe I should
> have left the last two on C. I don't know.

> Thanks in advance for any advice you can give, kind and gentle (and more
> knowledgable) folks.

> --
> =================================
> Larry Wahlers, Systems Specialist
> Office of Information Systems
> The Lutheran Church--Missouri Synod


 
 
 

Backup strategy

Post by MVP » Mon, 19 Aug 2002 11:43:06


Larry,
The last time I looked ghost does not support raid, even though you can get
it work with testing. I would recommend the standard method to backup and
restore exchange as listed on this link
http://www.microsoft.com/exchange/techinfo/administration/55/BackupRe...
sp modified for the use of veritas. For veritas please refer to their site.
This method will also help make your solution hardware independant.

This method will help miniumise risk.
--
Regards
Andrew Sword, MVP


Quote:> E55, SP4, on Win2K. It's a big fast, dual-processor, 1 gig memory machine
> that will have only 125 users on it. So, we did a RAID-5 array with 5 18
Gig
> disks. System is on C, a 4-gig partition, the 2-gig pagefile is on another
> disk, and the rest (about 64 Gig) is all for Exchange. I installed on C
(of
> course), and in PerfWiz, I decided to just move all the stuff Perfwiz
would
> move, to the big 64 Gig partition. We do full backups of the system
> partition every Friday night, and full Exchange backups every night,
> Mon-Fri. We did a full Ghost image of the entire 5-disk array after
> Exchange, Veritas, Norton, etc., were all installed and configured.

> The system admins say that in case of disaster, our recovery strategy is
> this:

> 1. Restore the Ghost image.
> 2. Restore the system from last Friday's backup.
> 3. Restore Exchange from previous night's backup.

> That all sounds reasonable to me, except for the MTA and IMS files. Do I
> even need to be concerned about these files? If so, and we're using
Veritas
> with the Exchange agent (even doing mailbox backups, too), how do I do it?
> Should I have maybe just left these on C?

> The reason I moved them all is, that gives me 64 Gig of space for all the
> stuff that's likely to get big, including the three stores, the two sets
of
> logs, the mail files and internet mail service files. But maybe I should
> have left the last two on C. I don't know.

> Thanks in advance for any advice you can give, kind and gentle (and more
> knowledgable) folks.

> --
> =================================
> Larry Wahlers, Systems Specialist
> Office of Information Systems
> The Lutheran Church--Missouri Synod

 
 
 

Backup strategy

Post by Greg Aske » Tue, 20 Aug 2002 01:53:44


I guess this depends on the business environment, but it doesn't sound that
reasonable to me and doesn't address the ability/requirement to recover to
the point of disaster.  Unless we're discussing very large amounts of data
that aren't static, I seldom find a reason to not perform a full backup
every night.  This could be used to restore the system from the previous
night's tape.

The DSADATA and MDBDATA folders are the two folders addressed by the online
backup; the remaining files not copied during backup can be re-created
during the reinstallation.

There are other factors, such as backup window time and tape/media capacity.
Disk drives are inexpensive but tape drives are not.

I would say the most fundamental issues here are:  defining your threshold
for downtime (how long can the system be down while you are attempting
recovery); ensure you can recover to the point of failure by proper
placement of transaction logs; and testing the recovery process.

Other issues may include different recovery scenarios.  Your scenario
addresses a total recovery.  What about a partial recovery (single mailbox),
failure of only the system disk, recovering from a failed hardware/software
component upgrade, 'up and running' recovery (get the system up and restore
the data later), etc.  What applications need to be un/reinstalled (email
antivirus, tape backup?)

--
--

Quote:> E55, SP4, on Win2K. It's a big fast, dual-processor, 1 gig memory machine
> that will have only 125 users on it. So, we did a RAID-5 array with 5 18
Gig
> disks. System is on C, a 4-gig partition, the 2-gig pagefile is on another
> disk, and the rest (about 64 Gig) is all for Exchange. I installed on C
(of
> course), and in PerfWiz, I decided to just move all the stuff Perfwiz
would
> move, to the big 64 Gig partition. We do full backups of the system
> partition every Friday night, and full Exchange backups every night,
> Mon-Fri. We did a full Ghost image of the entire 5-disk array after
> Exchange, Veritas, Norton, etc., were all installed and configured.

> The system admins say that in case of disaster, our recovery strategy is
> this:

> 1. Restore the Ghost image.
> 2. Restore the system from last Friday's backup.
> 3. Restore Exchange from previous night's backup.

> That all sounds reasonable to me, except for the MTA and IMS files. Do I
> even need to be concerned about these files? If so, and we're using
Veritas
> with the Exchange agent (even doing mailbox backups, too), how do I do it?
> Should I have maybe just left these on C?

> The reason I moved them all is, that gives me 64 Gig of space for all the
> stuff that's likely to get big, including the three stores, the two sets
of
> logs, the mail files and internet mail service files. But maybe I should
> have left the last two on C. I don't know.

> Thanks in advance for any advice you can give, kind and gentle (and more
> knowledgable) folks.

> --
> =================================
> Larry Wahlers, Systems Specialist
> Office of Information Systems
> The Lutheran Church--Missouri Synod

 
 
 

1. Seeking Backup Strategies

Hi,

After extensive hunting through online resources (microsoft.com,
exinternals.com, NNTP sourrces, various print libraries ....) I have found
amazingly little information on this all too critical topic.Microsoft offers
some basic info in it's E2kRecovery.doc --findable at
http://www.microsoft.com/Exchange/techinfo/deployment/2000/E2Krecover...
but I am unable to get detailed info.

My goal is to be able to offer my clients varied strategies including
minimal downtime recovery scenarios. After much work with exch 5.5 I
discovered some great techniques that can no longer work in 2k.

Questions I have:

1. Do any of you have other/better sources for info regarding either exch 2k
in general or recovery specifically?
2. Can I have a second exch server running in the organization and if the
primary fails, restore the data to the 2nd one? (active directory i would
think woudl complicate this, but then perhaps it facilitates it. I am also
having trouble locating good info on the ways in whihc ecxh and AD interact.

Thanks in advance for any leads!

Chris King

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