Simple FDT GUI Wrapper Built in JAVA..

Simple FDT GUI Wrapper Built in JAVA..

FDT is an Application for Efficient Data Transfers which is capable of reading and writing at disk speed over wide area networks (with standard TCP). It is written in Java, runs an all major platforms and it is easy to use. FDT is based on an asynchronous, flexible multithreaded system and is using the capabilities of the Java NIO libraries. https://fast-data-transfer.github.io/

Was searching for a FDT GUI and found none. So created this quickly in java. Output is a jar file. Please provide feedback to murugappanp at gmail.com So many improvements can be done. Will do and watch this space for improvements as and when time permits. Below is a screen shot.

Download source etc from github here. 
File - FDTGUI.jar

Instructions
1) Server side - Start the remote server by the command java -jar fdt.jar
2) Client side - Provide the local full path including the fdt.jar file
3) Choose the file to be transferred (Single file for now only)
4) Provide the remote destination folder on the FDT server and start transfer

NetApp Usable Space Calculator - new version 2.1

March 15, 2014

-Updated the current version 2.1 with few changes in right sized disks.
Thanks to Cor van der Hulst - a blog visitor who gave some tips on right sized disk values.
- Added some new disks released by NetApp

Same link holds good for the above changes

Download NetApp Usable Space Calculator ver 2.1 (Current Version)

September 5, 2013

NetApp Usable Space Calculator 2.1 - New Version Released (Minor Updates)

Updates in this version are
- Added 2 new disk sizes ( 1.2 TB SAS & 4 TB SATA )

Download NetApp Usable Space Calculator ver 2.1 (Current Version)

NetApp Usable Space Calculator - new version 2.0

August 8, 2013
NetApp Usable Space Calculator 2.0 - New Version Released

Updates in this version are

- A new feature called Raid Group Size Estimator where you key in disks values, raid type and disk type - the software will attempt to provide the best RG size values either based on NetApp recommendations or Optimal Capacity.
(Please note: The Raid group size input in the calculator is only for disk space calculations and this is ignored for the raid group estimator)
- Fixed a few disk calculation bugs
- A few UI changes
- Misc bug fixes on informational error messages


Download NetApp Usable Space Calculator ver 2.0 (Current Version)

Download NetApp Usable Space Calculator ver 1.2

Download NetApp Usable Space Calculator ver 1.1

NetApp Usable Space Calculator - new version 1.2

NetApp Usable Space Calculator - new version 1.2

July 15, 2013
NetApp Usable Space Calculator 1.2 - New Version Released

Updates in this version are

- Choice of display the output in TB/GB
- Included more different capacity disks and disk types
- Informational message for recommended values of Raid Group Sizes

Download NetApp Usable Space Calculator ver 2.0 (Current Version)

Download NetApp Usable Space Calculator ver 1.2 

Download NetApp Usable Space Calculator ver 1.1


Future Updates: Working on right now is a Raid Group Size Calculator where the software will recommend the raid group size values for a given disk configuration.

As usual please provide feedback and comments

NetApp Cluster, HA Pair Difference and Confusion

Personally I always get confused over these terms and with the Cluster Mode of NetApp it becomes even more confusing. This post is just to clarify the basics on the terminology used.

What is a NetApp HA Pair

 An HA pair consists of 2 identical controllers; each controller actively provides data services and has redundant cabled paths to the other controller’s disk storage. If either controller is down for any planned or unplanned reason, its HA partner can take over its storage and maintain access to the data. When the downed system rejoins the cluster, the partner will give back the storage resources.

Olden day meaning of Cluster: The term cluster has been used historically to refer to an HA pair running Data ONTAP 7G or 7-Mode. But not anymore.

What is a NetApp Cluster then:

The term cluster now refers only to a configuration of one or more HA pairs running clustered Data ONTAP.

7- Mode, Cluster Mode and Clustered Data ONTAP:

There are 2 variants of NetApp ONTAP operating systems.

1) 7-mode
2) Cluster Mode or C-Mode or the new name Clustered Data ONTAP.

Access NetApp filer from Linux host

FILER SIDE STEPS

Enable SSH
First enable SSH on the filer. Enable SSH (preferably version 2 - as it's more secure)
NETAPPFILER> secureadmin enable ssh2
NETAPPFILER> secureadmin setup ssh

Exportfs
Then we need to export the /vol/vol0 on the filer. Edit the /etc/exportfs file to add an entry like this
/vol/vol0       -sec=sys,rw=fqdn of the admin linux host or IP address

If you cant edit the file add an entry via exportfs command
exportfs -p rw=linux hostname /vol/vol0

ON THE LINUX HOST

Listing the exports
LinuxHost:#showmount -e filername
this will list the exports and you should see an entry for the vol0

Create a mount point
LinuxHost:# mkdir -p /mnt/mount1

Mounting the /vol/vol0
LinuxHost:# mount -t nfs NETAPPFILER:/vol/vol0 /mnt/mount1

List the contents
Navigate to /mnt/mount1 and do ls -l and you will see the filer's file system
LinuxHost:/mnt/mount1# ls -la

NetApp Usable Space Calculator ver 1.1

NetApp Usable Space Calculator ver 1.1

I have a new version today for the usable space calculator. Please download from here

NetApp Usable Space Calculator ver 1.1

Updates in this version are
- WAFL Reserve included as a field
- Error Message Indicator when not entered any value
- Minor bug fixes

As usual please provide feedback and comments and refer to my earlier post on the formula stuff