NexentaStor

NexentaStor is a proprietary derivative operating system built by the developers of the open-source Nexenta OpenSolaris-distribution that has been optimized for use virtualized server environments NAS and iSCSI and Fibre Channel applications built around the ZFS file system. It features iSCSI support, unlimited incremental backups or 'snapshots', snapshot mirroring (replication), block level mirroring (CDP), integrated search within ZFS snapshots and a custom API. Through its focus on ZFS, it carries with it potential benefits for virtualized server farms in terms of performance and thin provisioning. The operating system is currently distributed as ISO and VMware disk images with pricing determined on a per-terabyte and per-server licensing basis.^[1] A "Community Edition" is available free of charge for users with less than 18 terabytes of used disk space.^[2]

Features

• File system: ZFS
• Block-level replication
• File-level replication
• ZFS snapshot level replication
• VMware ESX integration
• WORM (Write Once Read Many) support
• Many plugin extensions
• Protocols: CIFS (via high-performance kernel-level CIFS implementation), FTP, NFS, SSH, rsync, WebDAV.
• rsync server, client and local synchronisation.
• iSCSI targets feature to create virtual disks.
• iSCSI initiator.
• Hard drive: P-ATA/S-ATA, SCSI, iSCSI, USB and Firewire.
• Networks cards: All wired and wireless cards supported by OpenSolaris.
• Boot from HDD or USB flash drive.
• Hardware RAID cards: All those supported by OpenSolaris.
• Software RAID levels: 0, 1, 5, JBOD, 5+0, 5+1, 0+1, 1+0, etc. (using ZFS).
• Management of groups and users (Local User authentication or Microsoft Domains).
• S.M.A.R.T. support.
• SNMP monitoring (Netgraph and MibII).
• Email log and reporting notification.
• ATA over Ethernet (AoE)

Community Edition

The "Community Edition" of NexentaStor is a no-charge version of the storage appliance. The Community Edition includes all the common SAN features of the paid version (snapshots, replication, deduplication, etc.) and can be used on storage setups up to 18 TB of used storage (that is, it will run on a system with any amount of available storage but freezes most administration functions once 18 TB of data is present). The Community Edition also lacks commercial end-user support or the inclusion of paid plugins though it can install many of the free and open source plugins that are developed and hosted on the Community Edition website.

following features are not available in Community Edition:

• Cluster 1.0 for Active / Active HA
• VMDC for Virtualization
• Auto Sync and CDP for Data Replication
• WORM for Data retention
• Target for virtual LUN mapping

References

1. ^ Please explain your pricing. Nexenta.com (2008-11-10). Retrieved on 2011-11-01.
2. ^ NexentaStor Project – CommunityEdition – NexentaStor Project. Nexentastor.org. Retrieved on 2011-11-01.

External links

• Official site
• Community Edition and Open Source plugins

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