Hi Bob,   Thanks again for such practicle advise.   Just wanted to make sure. When I said "isolate" DR and Primary site, I really meant to cut off any connection between them which is the foundation before we could start the DR exercise, this is how I understood, and it could be done as I know of.   So, what you are saying, for instance, to update all ports to different VLAN would be the method on the storage level to isolate the network. However, if we could complete seperating Primary and DR network, we will then no need to change ports to differnet VLAN, and no need to worry about routing back to Production.   Also, in this case, we will have a own AD server located in DR site.   Am I correct?       ... View more

Again,   My main question is, if I did not set it up from scratch, then how could I know DNS name clu1-nfs-2-t would RR to either clu1-nfs-2-t-01 or clu1-nfs-2-t-02? Then on the other side, there is no DNS pointer to the pair of clu1-nfs-2-01 and clu1-nfs-2-02.     The following is the requested output   > net int show -vserver clu1-nfs-2   (network interface show)             Logical    Status     Network            Current       Current Is Vserver     Interface  Admin/Oper Address/Mask       Node          Port    Home ----------- ---------- ---------- ------------------ ------------- ------- ---- clu1-nfs-2             clu1-nfs-2-01 up/up    x.x.23.11/24    clu1-01        a0a-314 true             clu1-nfs-2-02 up/up    x.x.23.12/24    clu1-02        a0a-314 true             clu1-nfs-2-admin                          up/up    x.x.18.61/24    clu1-02        a0a-310 true             clu1-nfs-2-t-01                          up/up    x.x.30.11/24    clu1-01        a0a-308 true             clu1-nfs-2-t-02                          up/up    x.x.30.12/24    clu1-02        a0a-308 true 5 entries were displayed. ... View more

Thanks for the link. But not sure I fully understand.   The following is the result. In it,  "  clu1-nfs-2-t-01" and "  clu1-nfs-2-t-02" can get resolve by nslookup "clu1-nfs-2-t", I understant that DNS round-robinly pickup an IP. The client can use "clu1-nfs-2-t" for altinatively using  "  clu1-nfs-2-t-01(  x.x.30.11)" or " clu1-nfs-2-t-02(x.x.30.12)". However, adversely, the client cannot use clu1-nfs-2, only clu1-nfs-2-01 or clu1-nfs-2-02 can get resolved.   So, how could I know I could assign clu1-nfs-2-t-01 to the client, and why in the other cases, I would have to use clu1-nfs-2-01 or clu1-nfs-2-02 individually?     clu1::> net int show -vserver clu1-nfs-2   (network interface show)             Logical    Status     Network            Current       Current Is Vserver     Interface  Admin/Oper Address/Mask       Node          Port    Home ----------- ---------- ---------- ------------------ ------------- ------- ---- clu1-nfs-2             clu1-nfs-2-01 up/up    x.xx.23.11/24    clu1-01        a0a-314 true             clu1-nfs-2-02 up/up    x.x.23.12/24    clu1-02        a0a-314 true             clu1-nfs-2-admin                          up/up    x.x.18.61/24    clu1-02        a0a-310 true             clu1-nfs-2-t-01                          up/up    x.x.30.11/24    clu1-01        a0a-308 true             clu1-nfs-2-t-02                          up/up    x.x.30.12/24    clu1-02        a0a-308 true 5 entries were displayed.   ... View more

Thanks to Bob for your ideas.   I have some more question, it may sound basic, but please help me to clear these up:   1.    What network infrastructure should look like on DR site before we start to work on the storage?        For instance, DR network has to be cut off from Primary site, during DR test. That means everything we said here would have to be based on this assummption. Correct?        Only then, the CNAME created for production could then reference vservers on DR site.   2.    To ensure the clients can mount the volumes on DR, For NFS vserver, the volulme mount points (junction paths) would have to be the same as production volumes. Correct?     Please continue on sharing your idea. ... View more

Update:   I have started to see the following ERROS's after NAGIOS got enabled. Can anybody please tell me if this ERROR should be ignored? or what impact is gonig to be on the storage. To me ERROR is ERROR, it should have negative impact, but, just could not tell what impact is. ERROR         snmp.server.busy: SNMP daemon is busy serving a high rate of incoming SNMP queries. ... View more

vserver, volumes,  CIFS shares and SM replication need to be created/set up in DR site during normal time. I am asking what we need to do during DR / DR Exercise.   volume names could be different, but mount points should be the same. Correct? vserver names could be different as well, since we just need to change DNS names. Correct? volume mount points should be all the same. Correct?    What about AD Domain, I think, for CIFS, AD in DR site is MUST, but if there will be no CIFS, is AD required?       ... View more

Failing would cause any issues and why? ... View more

Yes, the client IP is indeed the first hop.   > net traceroute -node node02 -destination x.x.30.109   (network traceroute) traceroute to x.x.30.109 (x.x.30.109), 64 hops max, 52 byte packets  1  linx_host (x.x.30.109)  0.490 ms !Z  0.208 ms !Z  0.177 ms !Z   right, this comand showed there is no switch involved.   Looking forward to hear the next step. Thank you!   ... View more

Any inputs pls? ... View more

Well, I tried the routing group command.   However, the lif and the nic on the client host are located on the same subnet, both are x.x.30.x, so, routing group should not be invovoled. Correct?   Furhter, the client (linux) host CAN ping the lif through the specific nic, but not the other around, if I use "net ping..." command Whe vlan that is associating with lif has the following settings:                                     Auto-Negot  Duplex     Speed (Mbps) Node   Port   Role         Link   MTU Admin/Oper  Admin/Oper Admin/Oper           data         up    9000  true/-     auto/full   auto/10000   The lif connection looks healthy. Could something blocked ping on the filer? ... View more

Well, I used to work on an older version of CDOT, snapmirror show on the source gave me the destination infor as well, not sure what reasons behind it chnaged on the newer version of CDOT THANKS! ... View more

Yes, this command works.   However, why "snapmirror show" on the source filer is not working? Should not it be working as well? ... View more

::>net ping -lif-owner cluster1-nfs-2 -lif cluster1-nfs-2-02 -destination x.x.x.x  (network ping) no answer from x.x.x.x   I could not get the response back when I run the above command on the filer.   Both are on the same subnet, a private network for backup. I got the lif name "cluster1-nfs-2-01" from "net int show" command.   Can anything block the ping between host and the filer? there is no firewall here. Should I try something else, or is there something else I need to do before the following command could work out?          It seems that I could not use IP address to replace lif name   ... View more

well, It is weird. I could not find how the snpashot all the suddent starts to be scheduled.    I checked auditlog.* under /mroot/etc/log, I don't see any related actions, and also command-history.log.* as well.    Can anybody please shed some lights here? ... View more

Could backup software somehow create schedules? I heard that we are using snapshot backup, TSM. Could this integrated software start up SS? ... View more

ok. I guess, if we just leave it, it should be caught up after the network maintenance is done, as you suggested.   However, since 2 hours are pretty long, and we have scheduled a replication every 30 mins, so, it might get errors after 8 attemps. So, I am wondering if suspending them first, then re-enabling, it would be more safer to ensure data consistency? ... View more

Thanks for sharing KamiIB,    It is very helpful.   Now, particularly, can PM or OCUM 6.1 allow me to set up thresholds on volume size, and then send out alerts?   It looks to me that PM has pre-defined thresholds on aggregates, warning 85%, error 95%, I can not change thresholds for aggrs, and can not set up thresholds on volumes. Am I correct? ... View more