Friday, 12 July 2013

Notes on the 7-Mode Transition Tool (7MTT)

The tool to migrate CIFS and NFS volumes to Clustered Data ONTAP 8.2 from Data ONTAP 7.3.3+ and 8.0.3+ operating in 7-Mode!


Part 1: Introduction

Supported versions:
- Data ONTAP 7.3.3 and above
- Data ONTAP 8.0.3 and above
- Data ONTAP 8.1 and above
=> to Clustered Data ONTAP 8.2

License requirements:
- SnapMirror license on the source (7-Mode storage system)
- SnapMirror license on the cluster
- (On the CDOT system) feature licenses to perform required 7DOT system functions
- (Optional) CIFS and NFS license

Preparing the 7-Mode Storage System for Transition:
license add SnapMirror_License
options snapmirror.enable.on
options snapmirror.access all
secureadmin setup ssl
options ssl.enable on
options ssl.v3.enable on
options httpd.admin.ssl.enable on
options httpd.admin.enable on
options interface.snapmirror.blocked “ “
options interface.blocked.mgmt_data_traffic off
vol options v_name no_i2p off
vol options v_name read_realloc off
vol options v_name nvfail off
vol online v_name

Preparing Clustered Data ONTAP Storage Systems - part 1:
*The language setting of the Vserver must match the language setting of the 7-Mode volumes to be transitioned
SFO (Storage Fail Over) must be enabled on the aggregate:
storage aggregate modify -ha-policy sfo -aggregate a_name
*Transition from 32-bit aggregate on 7-mode to 64-bit aggregate on C-mode requires an additional 5% space in the destination aggregate
*For Vserver peer relationship - clusters should not have a Vserver with same name

Preparing Clustered Data ONTAP Storage Systems - part 2:
Verify SSH connection:
ssh username@cluster_mgmt_IP
Verify SSL enabled:
system services web show
Verify HTTPs allowed:
system services firewall policy show
Create an intercluster LIF on each node:
network interface create -vserver nodename -lif intercluster -role intercluster -home-node nodename -home-port e0f -address INTERCL_IP -netmask INTERCL_SUBNET
Create a static route for the intercluster LIF:
network routing-groups route create
Verify the use of the intercluster LIF:
network ping

Installation Requirements:
64-bit Windows 7 or 2008R2
64-bit JRE 1.6
An available Port 8443
IE 9, Chrome 20 or Firefox 14/16
Screen resolution 1280 x 1024

Download 7MTT from:

Installation:
Next > Install > Finish

GUI Web Address:
https://127.0.0.1:8443/transition

Part 2.1: Transitioning using the 7MTT Web UI

Image: 7-Mode Transition Tool 1.0

Steps:
1. Add 7-Mode controllers and Clustered ONTAP clusters
2. Use New Transition Project to create a project
3. Add controllers and clusters to the project
4. Add volumes by configuring a subproject
5. Run prechecks
6. Start the subproject
7. Complete the subproject (cutover)
Note 1: IP can be automatically or manually migrated “Map 7-Mode IP Addresses to Cluster LIFs”!
Note 2: ‘SnapMirror Schedule for Transition’ controls the transition incremental updates.

Part 2.2: Transitioning using the 7MTT CLI

Image: 7MTT CLI Main Menu
(Optional) Configure NFS and Kerberos

*From the cluster shell
Add the NFS license:
system license add NFS_LICENSE
To verify the time skew:
vserver services kerberos-realm show
To correct the time skew:
vserver services Kerberos-realm modify
To transition an Active Directory (AD) Kerberos server:
vserver services dns create
To verify that Domain Name System (DNS) entry exists from the AD domain on the Vserver:
vserver services dns show

(Optional) Configure CIFS

*From 7-mode system shell
Disconnect all CIFS access:
cifs terminate
To create the CIFS server:
cifs setup

*From the cluster shell
Add the CIFS license:
system license add CIFS_LICENSE
Verify there is a data LIF:
network interface show
To configure DNS:
vserver services dns create
To create a CIFS server on the Vserver:
vserver cifs create

Part 3: Post-transition Tasks

Configure the features (if required):
IPv6 and FPolicy (not transitioned automatically to the Vserver)

Check Vserver Readiness:
- Verify the volumes on the Vserver are online and read/write
- Verify the transitioned IP addresses are up and reachable on the Vserver

Client access:
Redirect client access to the CDOT volumes

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