NexentaStor 3.1.5 Release Available Now

logo_nexentaMichael Letschin has announced the release of NexentaStor 3.1.5, a new version of the project’s specialist distribution optimised for virtualisation and network-attached storage – based on the Illumos kernel and ZFS file system:

“Nexenta is pleased to announce the availability of our latest software release, NexentaStor 3.1.5. This new software release is available now for download from the Nexenta Community . This new release is available to both our Enterprise Edition users as well as our NexentaStor Community.

In addition to general maintenance fixes, NexentaStor 3.1.5 includes key enhancements in the following areas:

  • AutoSync Performance and Reliability Enhancements
  • NDMP Updates

As previously communicated to the community, the licensed capacity for NexentaStor 3.1.5 remains 18TB usable.

NexentaStor 4.0 Community Edition continues to move forward, and we will provide updates on the progress of that release later this quarter. Please note that with the release of NexentaStor 4.0, the capacity limit for community is changing to 18TB Raw to align with our Enterprise Edition licensing schema.”

Release Notes | ISO

Linux File Systems (BTRFS, Reiser, JFS) introduction

Jarret W. Buse has written a few posts explaining and summarising the differences of some older and newer file systems available for Linux: BTRFS, Reiser and JFS.


The B-Tree File System was created by Oracle in 2007. The file system was added to Linux Kernel 2.6.29 in 2009. The maximum number of files is 8,446,744,073,709,551,616 or 2 to the 64 power of files. The maximum file length is 255 characters. The theoretical max file size limit is 16 EB, or 8EB because of a kernel limitation in Linux.


The Reiser File System (Reiser3) was created by Namesys in 2001 and added to the Linux Kernel in version 2.4.1. Reiser3 was the first Journaling file system included in the Linux Kernel. Reiser4 was introduced in 2004 which was an improved Reiser3 file system.

Journaled File System

The JFS file system is a 64-bit file system created by IBM and ported to Linux in 1999. A stable version was released in 2001. The first implementation was the Linux Kernel 2.4.18. JFS was originally released in 1990 with AIX version 3.1. It is sometimes referred to as JFS1.

Click on the links above for the full introduction into these file systems.