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Some basic questions
Hi all
We are setting up our first data domain systems for a while now and I've got some really basic questions. I've already started reading docs but I am too slow atm due to we need to finish some projects which are related to DD, replication, and so on.
Am I able to...
- split traffic on the network adapters Management, Data, Replication?
- schedule time of replication?
- use shares without domain resp. DNS system?
Do I need DNS to replicate??? Is there a way to replicate IP to IP? I've had issue with replication resp. it didn't work when I specified IP addresses or didn't have a DNS environment I assume due to the certificates which are needed to exchange when adding the systems in the system list.
Thank you
DukeR1337
208 Posts
0
February 1st, 2016 00:00
Anyone?
ble1
2 Intern
2 Intern
•
14.3K Posts
0
February 1st, 2016 01:00
Perhaps you should take training Answers:
PS-VCORE
8 Posts
0
February 2nd, 2016 08:00
Am I able to...
Do I need DNS to replicate??? Is there a way to replicate IP to IP? I've had issue with replication resp. it didn't work when I specified IP addresses or didn't have a DNS environment I assume due to the certificates which are needed to exchange when adding the systems in the system list.
The hosts file is your friend
I highly recommend you take some DataDomain training if you have the ability to
DukeR1337
208 Posts
0
February 8th, 2016 05:00
Hi guys
Thank you for your feedback guys, I really appreciate. Well it's always the same for our company.... first you sell some really good products to the customers but training is not a big thing.... after a while if you do complain as a technician you are allowed to visit a training! It's on my schedule as soon as possible but until then i need to collect information out of the internet and the community :-)
Well could you please explain to me a little bit more in detail
Further we face issue with the time (RTO) with Veeam well for me the situation is clear due to dedup it takes some time to be able to restore files stored an DD. What is the best practice to use disk based storage and DD?
Primary Storage will be backed up by Backup Server (FC) with HDD as a primary sotrage and for long term using EMC DD?
Desaster Recovery
One of the most imporant points for me at the moment is the following. If I have 1 backup server and two data domains.
1 Datadomain next to the backup server and one system in another location. Shall i do replicataion by Veeam or by DD?
How do I integrate the 2nd domain into Veeam? Let's assume i wil backup on DD1 and this one is replicating to DD2 and DD1 breaks how do i get access to DD2? Do I just add the 2nd DD when i need that one or is there a special design or technology?
Cheers and thank you
nithin_s
13 Posts
1
February 8th, 2016 08:00
From GUI, Under Hardware ==> Network, you should see all the interfaces. Depending on model/slot, you would have eth0, eth1, eth2, eth3. Take an example here eth0/eth1 being copper and eht2/eth3 as Fiber cards. Fiber cards are ususally dual port and Copper Quad port. You can setup Management as copper (say eth0a and eth1a teamed together) connection. Data movers can be eth2a and eth3a seperate connections no teaming and 10G/Fiber. eth2b/eth3b can be Replication, again 10G seperate connections (alternate one if using DMZ).
This way you achieve redundancy at all levels. Now we can use Replication on a seperate network with ACLs opened but all others including management/data movers on same network for better performance.
DD has different replication techniques, say take an example of MTree replication which sends snapshots every 15 mins. you cant' schedule this DD replication and leave it to run itself. It's very optimized and only changes are sent over network.
Further we face issue with the time (RTO) with Veeam well for me the situation is clear due to dedup it takes some time to be able to restore files stored an DD. What is the best practice to use disk based storage and DD
You can't compare performance of a regular disk storage vs DD and DD is much better. DD restores over a 10G network are very faster with no lags.
DukeR1337
208 Posts
0
February 10th, 2016 02:00
Hey
Thanks for that post. Look at this yesterday I was "complaining" about how my company regarding projects and technology and now they gave to me a new datadomain porject......
Well I like it but hey I would like to have training on this first!!!
Well can anyone tell me more about replication based on IP? We will have to site connected by WAN but no DNS, like PS-VCORE mentioned there is a way to setup the whole thing with hostfile and IP.
Can anyone tell me more about this or point me to a document about this? How about certificates is that going to be influenced if we only to stuff with IP rather than DNS names?
Thank you so much
nithin_s
13 Posts
0
February 10th, 2016 03:00
I didn't quiet catch the trouble in using DNS vs IP. For Data Domains, you can access the management URL obviously via IP, if a DNS is created that would work too. Each interface is configured with the IP.
So when you setting up replication, you can access the management page via IP and add the destination system also via IP to same Systems Manager and configure replication from replication tab.
Now if you need to define a particular interface to be used for replication, please add a route.
Say A has IP 192.168.1.9 - management
Replication - 192.168.100.9
B has IP 10.268.1.9
Access Systems manager on A using the above IP and use options, add additional system and add B there
Now from Replication tab on A, configure replication between A and B.
Now if you want to use Replication interface from A to B, at A add a route from route/Network tab
route add 10.268.1.9 ( address to B) through 192.168.100.9 (replication interface on A)
DukeR1337
208 Posts
0
February 10th, 2016 05:00
Hi
Thanks for this really helpful post. What about the certificates and names? Last time i tried to add my 2nd DD to the GUI of the first one (because this seems to be a prerequiste otherwise i can not choose my replication destination) by IP there was an error.
First it did not work then it worked with an error message regarding hostname issues but it added the system anyway. After a while it disappeared.
Only when I used a DNS solution and add the systems with the DNS name the system remained in the GUI and I was able to choose that one as replication target.
nithin_s
13 Posts
1
February 10th, 2016 07:00
I just added a test system with the IP address and it works fine. Whether you enter DNS or IP address, it prompts for a certificate while adding which you need to accept. Once done, the displayed name would be the name of the Data Domain (Host Name) what you configured while installing the DD for further use. I don't see any issues in not having a DNS name for the same.
DukeR1337
208 Posts
0
February 11th, 2016 00:00
Hi Nithin
Thank you for putting that effort into my request, I really appreciate! For me it is exactelly the way you explained it when i type in the name of the system but when I type in the IP there is an ERROR BOX.
I've got a screenshot of it, it says "There was a communication problem with the system. Check your log files or try it again in a few minutes". Also with the name "EMCDD02" there was one: "Communication error encountered, please check if EMCDD2" can be resolved from Management Host EMCDD01.
Then i closed the thing and add the system like this "emcdd02.domain.local" et voila it works. So do I need to add the hosts in the hostfile of each DD before I do this?? For me it should not be necessary when i type in IP address but as you can see at least for me it didn't work with IP address...
I've got two other DD here and i will get two others in a week with the same need of replication so let's see.
I've got one final question... maybe this is also related to the IP/Name issue.
There is a mtree called "backupveeam" on this one there is a shared called "backupveamshare". Everything works fine which means client access = * and user =* but as soon as I type in an username user=backupveam I don't have access anymore on that share even when i type in emcdd01\backupveam and passwort.
When i remove the share and specify the user from beginning like this it works. When I add another user it doesn't work for that one.
1) How do I add a local user account to a share?? Click on the share and say modify? Then adding a user with the plus icon and type in the username manually which I've created on the system before? Why is there no dropdown????
2) How do I assign LDAP user to that share??? Specify it like domain\user????
I really need training and i will check schedule and force my boss to send me there. I am wasting so much time which I really don't have due to the amount of projects atm...
Thank you
nithin_s
13 Posts
0
February 11th, 2016 04:00
I'm not very sure if it's specific to the version of DD you use or the DD OS version. What's your DD OS version, I tried atleast in 3 systems and IP works charm.
For CIFS, you can leave it a * at Data Domain and from Compmgmt.msc, open share and add more users.
Here's the EMC doc around it.
Add User or Group to CIFS Share
PS-VCORE
8 Posts
0
February 13th, 2016 12:00
Let me take a look through some of my old terminal session logs. There's a really good chance I'll have the commands that you need to do this. Some of it is much easier using commandline, some can be done from the WUI, such as adding the hosts to the hosfile. the static routes are easier from the commandline.
There is a really good chance that you are going to have to delete and reauthenticate the partner DD from the WUI, once you put those hostfile entries and static routes in. If that is the case, and your certificates no longer work, you will have to open an EMC case and let them remote in and they can guide you through the steps of creating a new key and archiving the old one. My original installation team put in the wrong domain name in when they configured mine, so my certificates were invalid from the get-go and I had to go through it. It's not that difficult it takes about 30 minutes on a WebEx
If I can find the appropriate log files I will post it in a follow up to this
Thanks & Regards,
Paul
Paul D Simpson
Storage & BRS Engineer
Mobile: (602)339-6844
24x7 Support: (877)348-7714
Email: Paul.Simpson@vcoretec.com
Experience the vCORE difference: Superior Customer Service & Engineering Excellence.
http://www.vcoretec.com
DukeR1337
208 Posts
0
February 23rd, 2016 06:00
Hi Paul
I do have the same situation like the last time. I have 2 brand new DD2200 systems and they are attached each with 1 GbE via switch to each other. There is no DNS within the network I just added the system IP and hostname within "Hardware-Ethernet-Settings-Host Mapings" with their IP addresses and hostnames.... i can ping both systems from the CLI with hostname and IP address.
As soon as i go to "Replication-Manage Systems" and add the system with he FQDN (Which is pingable) it takes a while and then it informs me about "The Following is the certificate probvided by the system EMCDD2.customer.tld" Verify this and press OK" I press OK and then it takes forever!
I did even create a route "Hardware-Ethernet-Routes" like this
Static Route
-host 192.168.17.5 eth0a
Where eth0a is the default 1GbE port which is attached to the coper network switch like the other system... I really don't get it!
PatrickBetts
116 Posts
0
February 23rd, 2016 08:00
Hi Duker,
I'm with DataDomain Support. You stated that the certificate exchange takes a long time but does it finish? The systems have to swap certificates over SSH before replication can occur. Normally on a WAN setup we would tell customers to make sure SSH is open both ways on the firewall until the certificates are swapped but you are saying they are local to each other. I'd like to look into this further for you. Please email me directly at lawrence.betts@emc.com and if possible, send me the serial numbers of the system so I can check the latest AutoSupports. Thanks in advance.
Patrick Betts
Data Domain
NET/REPL
DukeR1337
208 Posts
0
March 3rd, 2016 01:00
Hi everyone
Hope it is OK if I've got another question for you guys. It is about DD Boost.
Do we also profit from better performance when using usual CIFS/NFS shares on DD and Veeam or Backup Exec with OST or only with the storage units?
Cheers and thank you