Backup server on an ACE

When creating a backup server on an ACE running A5(2.1), we're using the probe as the trigger. Once the primary real server has failed to the backup, will it fail back to the primary server when the probe deems the primary server available?
It's just as well as the ACE manual documents the backup serverfarm, there's dearth of info on the backup server.
Thanks.
_ Greg

Hi Greg,
Backup rserver as you know would be configured with standby keyword. When primary server will be Operational (probe passed)
- Existing connections on backup keep accessing backup.
- For new connection requests ACE looks up sticky entries, if there's already an entry for backup server, the connection is sent to the standby rserver.
- If a new client request (connection) doesn't match any sticky entry for backup rserver ACE forwards this request to primary.
Let me know if you have any questions.
Regards,
Kanwal
Note: Please mark answers if they are helpful.

Similar Messages

ACE Backup-server failover

I'm having trouble with the functionality of backup servers in a serverfarm.
Lets say I have three rservers in a serverfarm. Each rserver has a backup-server assigned to it. When a probe detects that one of the three nodes failed, the ACE puts the backupserver in rotation for the whole serverfarm. This causes one out of three connections to show a "under construction" page. However two of the three nodes are still functioning, but users randomly see a construction page, which confuses them.
Is there a way to configure the ACE to follow this procedure?
One server fails a probe, take server out of rotation
Second server fails a probe, take server out of rotation
Third server fails a probe, take server out of rotation
Place backupserver in rotation for the whole farm
When one server comes back online, put it inservice and take backupserver out of rotation.
The intent is for the rservers to be self-sufficient making server administrators not have to have any knowledge of ACE and need to login and manually place a serever out of service. I want a probe to detect IIS failing and allow server administrators to work on one node at a time without an outage, and still retain a construction page if all nodes fail.

Hi,
Probably, you may need a "sorry server" configuration but also there´s another way which you may take into account which backup serverfarm, please take a look:
http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/vA5_1_0/configuration/slb/guide/classlb.html
backup
name2
—(Optional) Designates an existing host (with valid content) or a redirect (sorry) server farm as a backup server farm in case all the real servers in the primary server farm become unavailable. You can configure one backup server farm for each existing primary server farm. When at least one server in the primary server farm becomes available again, the ACE sends all new connections back to the primary server farm. The ACE allows existing connections to the backup server farm to complete."
Regards,
Jorge

ACE backup-server and sticky

Hi all,
a question:
     if a configure a serverfarm with backup-server
serverfarm host S_Das
rserver DAS1
    backup-rserver DAS1_1
    inservice
rserver DAS_1
    inservice standby
rserver DAS2
    backup-rserver DAS2_1
    inservice
rserver DAS_1
    inservice standby
sticky ip-netmask 255.255.255.255 address both SF_DAS
timeout 10
replicate sticky
serverfarm S_Das
and rserver DAS1 goes down what will be behaviour of sticky and balancing?
New connection wel'll go towards DAS2 or a tricky and clever sticky take precedence? (i mean persistence on DAS1_1 that is my backup server..)
tnx
Das

Hi Danilo,
If your primary rserver goes down the sticky entries associated with that server will be automatically flushed from the sticky table so that
all new incoming connections will be diverted to your backup rserver.
In case that primary rserver comes back then:
- Existing connections on backup keep accessing backup.
- For new connection requests ACE looks up sticky entries, if there's already an entry for backup server the connections is sent to the standby rserver.
- If a new client request (connection) doesn't match any sticky entry for backup rserver ACE forwards this request to primary.
In case that you want to use the primary rserver for all the connections after coming back to operational state then the backup option would be configured like this:
rserver Primary
ip address 10.10.10.2
inservice
rserver Standby
ip address 10.10.10.3
inservice
serverfarm host Primary
rserver Primary
    inservice
serverfarm host Standby
rserver Standby
    inservice
policy-map type loadbalance http first-match slb
class class-default
serverfarm Primary backup Standby
HTH

ACE: Server- /backup-server connection failover

Hi, I have a question regarding server-failover when using rserver+backup-rserver or serverfarm+backup-serverfarm (via sticky).
My understanding is, that in case a server fails, the existing connections will not fail over to a backup-server.
We are looking for a way to change that (default) behaviour - We've already searched the documentation etc. and found the "failaction reassign/purge". But when my colleague tried to have this confirmed via TAC, it got pretty confusing and we were told, there's no way to do/solve this..
So in a second attempt, does anyone have experience with this - maybe can confirm or give another solution?
Thanks & Regards,
Max

This was answered sometime back in few discussion:
first, not all servers accept TCP connection to be reassigned to them.
This is because tcp requires 3-way handshake and keeps track of sequence/ack numbers.Therefore, the servers need some way to exchange this information or to start in the middle.
On ace, we have 2 commands "failaction reassign" or "failaction purge".
The reassign is to simply move the connection to a backup server.
The purge is to kill the connection forcing the client to reopen a new one - this new connection will then be loadbalance to an active server.

Backup server recomendations

We currently backup our 4 V880 servers using a 420R as backup server and an L25 tape jukebox on a dedicated gigabit ethernet.
The L25 is in need of replacement and I thought an SL24 would be ideal but wondered what people might recommend as a backup server. The 420R already has some i/o issues and given the increased throughput of the LTO drives I thought this might need replacing as well. We use Netbackup software on the 420R is that has any bearing on the answer.
regards,
Paul

Hi Greg,
Backup rserver as you know would be configured with standby keyword. When primary server will be Operational (probe passed)
- Existing connections on backup keep accessing backup.
- For new connection requests ACE looks up sticky entries, if there's already an entry for backup server, the connection is sent to the standby rserver.
- If a new client request (connection) doesn't match any sticky entry for backup rserver ACE forwards this request to primary.
Let me know if you have any questions.
Regards,
Kanwal
Note: Please mark answers if they are helpful.

Recently backing up my ipad onto my macbook, which is the backup server for all of my gadgets. This includes all my photos and tons of music. The macbook said it could not backup the ipad because there was insufficient disc space to do so. What now?

I have a macbook operating OSX10.6.7. Recently backing up my ipad which had lots of photos from a recent vacation. I use this laptop as the backup server for all of my gadgets so it has thousands of photos and tons of music. It just told me that it couldn't back up the ipad bc there wasn't enough disc space. I was afraid that this would happen eventually. What next? Newer laptop with more space? I'm not sure what files I could sacrifice to free up more space as most of these are important.

What size hard drive do you have in your MacBook? The cheapest options are, a larger internal hard drive, or an external drive. Or you could get a cheap desktop PC and network to it for storage. I've got one that lives in the hall with 3 Terabytes (That's 3000gb) of storage.

How do I restore a Windows Backup Server backup recovery partition?

I'm trying to test restoring a backup from our real server on a temp server.
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The host is not authorized to connect to this Backup Server

Hi experts,
I'm trying to connect to a remote backup server S2_BS running on VM2 from a data server S1 running on VM1. When I issued following command in isql
1> SYB_BACKUP...sp_who
2> go
Msg 7221, Level 14, State 2:
Server 'S1', Line 1:
Login to site 'SYB_BACKUP' failed.
It failed to connect to its SYB_BACKUP (i.e. S2_BS is configured for SYB_BACKUP in this case).
And I got following error in the error log of S2_BS:
Jun 23 14:48:53 2014: Backup Server: 2.24.2.1: The host '10.43.13.204' is not authorized to connect to this Backup Server.
Jun 23 14:48:53 2014: Backup Server: 2.6.2.10: Login information unavailable.
I can ping VM2 from VM1 without any issue:
$ ping 10.43.13.204
PING 10.43.13.204 (10.43.13.204) 56(84) bytes of data.
64 bytes from 10.43.13.204: icmp_seq=1 ttl=64 time=0.035 ms
And have entry for S2_BS in /opt/sybase/interfaces on VM1:
S2_BS
master tcp ether 10.43.11.19 5002
query tcp ether 10.43.11.19 5002
And S2_BS is running correctly on VM2.
I'm running ASE 15.7 SP110 on both VM1 and VM2.
Could someone please let me know how to fix this?

The message is due to a new security feature. See Remote Dump Host Control
for details on how to register your host with the remote backupserver.
-bret

How to start sybase Backup server in windows 2008 r2

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I try to start it again but i get problem in that.
Sybase BCKServer_ASE_BS , Sybase SQLServer_ASE & Sybase XPServer_ASE_XP - These could not be start
The error is in screenshot can any one help at this please....

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With all that said, what OS should I upgrade to, and how should I set up the redundant storage? I apologize for the long-windedness and appreciate any feedback. Thanks.

Whew, I wouldn't use Time Machine at all, nor Raid, more on both later.
For OS, how much RAM does it have?
Tiger Requirements...
To use Mac OS X 10.4 Tiger, your Macintosh needs:
    * A PowerPC G3, G4, or G5 processor
    * Built-in FireWire
    * At least 256 MB of RAM (I recommend 1GB minimum)
    * DVD drive (DVD-ROM), Combo (CD-RW/DVD-ROM) or SuperDrive (DVD-R) for installation
    * At least 3 GB of free disk space; 4 GB if you install the XCode 2 Developer Tools (I recommend 20GB minimum)
http://support.apple.com/kb/HT1514
See Tom's, (Texas Mac Man), great info on where/how to find/get Tiger...
https://discussions.apple.com/message/15305521#15305521
Or Ali Brown's great info on where/how to find/get Tiger...
http://discussions.apple.com/thread.jspa?messageID=10381710#10381710
Leopard requirements/10.5.x...
    * Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor
minimum system requirements
    * 512MB of memory (I say 1.5GB for PPC at least, 2-3GB minimum for IntelMacs)
    * DVD drive for installation
    * 9GB of available disk space (I say 30GB at least)
There are workarounds if the 867MHz is the only hangup...
http://sourceforge.net/projects/leopardassist/

Easiest way to Configuring backup server in oracle 8i

I want to make a backup server i.e database for my existing database in different server. For example: My existing server completely crashed. I am having backup of os level complete backup only. Please note that not useing export file. Please suggest.

It totally depends on your business requirements. If business requires something then you have to do it even though it is hard through the technology.
Oracle does provide the following two main things to ponder on.
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-aijaz

Cluster and Backup server

Hello guys;
I want to use a cluster oracle server and another server in another place as a backup server to copy the database on line from the cluster server.
If I want to make the backup server a primary server if something wrong happened to the cluster server.
what the steps should I do? or if there is any document to read I'll be thankful
thanks in advance

Hi,
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Oracle has a rich documentation for blueprints and best practices, my sincerely advice is to get familiar with it:
http://www.oracle.com/technetwork/database/features/availability/maa-090890.html
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Sve

Backup server desinging or deployment

Hello guys,
I have 1 backup & symantec mangement server in 2 different sites with 4 nics each (2 for management & 2 for backup traffic diferent Vlan
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ndraj

Hi,
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As what I understood, the server connect to both 192.168.1.x and 192.168.2.x, then subnet 192.168.2.x should be reachable even if you do nothing on routing table.
If you add routing entry via "route add ...", it doesn't mean you have two default gateway. Only specific network will be send via this specific interface. In this situation, your provisioning should be correct.
Hope this helps.

Which Backup server version is required for Sybase cumulative dump/load

Hello,
To perform cumulative dump and load (supported from ASE 15.7 SP100 and up) with 3rd party API, what backup server version is needed?
We use backup server API version 2.1, and sybackup.h does not have any definition for cumulative dump. This header file only defines DATABASE and TRANSACTION as command_type, so when "dump database foo cumulative" is issued, command_type becomes UNKNOWN.
Since we support all the ASE versions from 15.0.3 and up, we ideally need a backup server API that works for ASE versions from 15.0.3 and also works with cumulative backup. Is there such an API version?
Thanks,
Ali

What I'm told is that the version wasn't bumped because the changes shouldn't really affect the API functionality; the API module would still receive a byte stream and be able to store and return it regardless of the command_type.
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Replace the current command_type definitions with the following:
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AnyConnect Client Profile Backup Server Configuration

I'm trying to understand the use of Backup Server option in AnyConnect Client Profile
Configuration > Remote Access VPN > Network (Client) Access > AnyConnect Client Profile > Edit > Backup Server
(Screenshot attached)
My questions:
1. In what all scenarios do we add servers (ASA devices) in this tab
2. If I have same information in two different locations (Site A and Site B) for AnyConnect user, can I add Site A-ASA and Site B-ASA into Backup Server tab as a failover mechanism for end user.
3. Or is it only used to mention ASA devices configured in failover unit
4. In case of failover unit, does it support stateful failover
I could not find answers to above questions from Google search. So, asking here

I think we need to be careful when we talk about failover. The original post was clearly asking about two different scenarios
1) ASAs at two different sites
2) ASAs configured as a High Availability failover pair (Active/Standby).
The profile does work to provide failover in 1) but does not work to provide failover in 2).
I do not know the authoritative answer to the question about IP phones use of the profile. I believe that the answer ought to be that yes the phone would receive the profile after its first connection and would use the backup server identified in the profile is the primary server was not available. That is a basic functionality of the AnyConnect client and if the phone is using the AnyConnect client then it ought to support that failover.
If someone does have an authoritative answer then please speak up. Several of us would like to know the right answer here.
HTH
Rick

Backup server on an ACE

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