RAINcloud OS
File System, Volume Manager and Data Protection

Features:

Scalability

RAINcloud OS allows the SnapScale clustered NAS systems to start as small as 3 nodes and scale to hundreds or thousands of nodes. This allows storage administrators to achieve up to petabytes of raw capacity within a single global namespace, minimizing the complexity of managing a large storage infrastructure. Scale storage by simply adding hard drives or additional nodes, while clients remain online and connected to data.

Efficiency

RAINcloud OS offers automated optimization of performance within the SnapScale clustered NAS environment. Capacity and performance resources are automatically balanced across each node in the system-wide cluster. When adding additional storage to SnapScale, the Data Balancer will ensure that new resources are integrated to provide maximum benefit to the entire cluster.

Thinly Provisioned

All RAINcloud OS storage volumes are thinly provisioned to allow growth to proceed without limitations. All volumes share the available global namespace and can be grown by simply adding hard drives or additional nodes. If necessary administrators can apply volume capacity limits that can be changed at will, or reverted back to limitless volumes.

High Availability and Data Protection

RAINcloud OS protects data globally through a unique data protection algorithm. The redundancy technology is designed for high availability and allows the system to absorb multiple concurrent failures across all levels of the storage system. With options for either 2-way or 3-way file redundancy across a cluster, the SnapScale system can withstand multiple drive or node failures without any data loss or loss of cluster connections.

Unified Storage

RAINcloud OS allows the storage of both block and file-based data on a single SnapScale clustered NAS system. Take advantage of common networking protocols such as SMB, NFS, HTTP or FTP for file sharing, collaboration and backup, and host database storage and virtualized servers on SnapScale iSCSI LUNs. Support your server consolidation and virtualization initiatives with a single SnapScale cluster in your environment.

RapidRebuild™

To insure redundancy in the event of a failure, failed drives are automatically rebuilt using RapidRebuild within the system and minimizes the time spent operating in a degraded state. RapidRebuild also reduces the overall system impact of drive failures compared to traditional NAS with RAID. Unlike the performance impact failures can cause in a traditional architecture, RapidRebuild data protection isolates failures minimizing their impact on system performance. With the spare distributer, rebalance hot-spares within your cluster after a drive rebuild to automate the distribution of data protection.

Simple Management

The SnapScale storage system is designed for utilization in quickly growing environments with unstructured data, and allows administrators to completely automate all tasks associated with deployment, provisioning, monitoring and reporting. The RAINcloud OS Alert System also notifies the administrator in the event of an optimization event recommendation to ensure that data and spares are balanced across the entire cluster to maximize performance.

Technical Specifications:

Technical Specifications:
Feature/Function
Operating System Basis	Derived from Linux
File System Type	Distributed file system with distributed metadata
Max File Size	Variable
Data Redundancy Levels Supported	2-way or 3-way inter-node data redundancy
Network File Protocols	Microsoft Networks SMB (1.0/2.0/2.1) / CIFS (NTLM) NFS v3 (UDP/TCP) CIFS via Mac OS X HTTP/HTTPS FTP/FTPS
Network Transport Protocols	TCP/IP; UDP/IP
Network Client Types	Microsoft Windows 2000 and later Mac OS X 10.5/10.6/10.7/10.8 (via CIFS/SMB) UNIX/Linux
Microsoft Active Directory Support	Yes Operates in both native and mixed domains.
Management Interface	Web-based Graphical User Interface (GUI)
UPS Support	APC brand UPS: With network management card or USB connection
Backup Agent Support	Symantec NetBackup 7.5 Symantec Backup Exec 2012
Support for Network Backup	Yes, with compatible backup agent
Support for local Tape Backup	Yes- SAS or USB connected tape libraries or autoloaders
NDMP Support	No
Snapshot Capability	Yes
Anti-Virus Support	No
Replication Support	Yes (SnapEDR)
Volume-based Quotas	Yes
Unix NIS Security	User/Group List Download only
Windows Security	Microsoft Active Directory Service (ADS) (member server)
Share/ File-Level Securityy	Share access control lists (ShACLs); share export options for NFS; Unix/POSIX file permissions; NTFS-style file system ACLs.
File/Directory Ownership	User, Group, Other for Unix/POSIX permissions; user/group (SID) for NTFS permissions
Windows/CIFS Permission ACE Support	All standard NTFS file security bits.
Maximum Number of ACE Entries per ACL, File, Subdirectory	1000 per sub directory or file
Inheritance Levels Supported	All standard NTFS file security inheritance levels
RAID Type
RAID Type	RAIN - 2-way or 3-way data redundancy
Maximum number of Volumes	256
Maximum number of SnapShots	256
Thin Provisioning	Yes
Maximum Volume Size	Limited to total system capacity
Maximum number of iSCSI LUNS	256 per node
Maximum iSCSI Disk Size	Limited to total system capacity
Maximum Number of Shares	500
Maximum Share Name Size	27 Characters
Maximum Local Users	2,000
Maximum Microsoft Windows Domain Users	600,000 can use the system
Maximum NIS Users	Determined by external system

	Data Protection	System Management	Utilities
Notable Features	Automatic failover RAIN Snapshots Flexible Volumes Replication w/Snap EDR™ (optional*) Backup to VTL or Tape with supported backup agents RapidRebuild™	Multi-system Management with SnapServer Manager™ Volume-Based Quotas Home Directories Command Line Interface SNMP and Email Alerts NTP Support Network Load Balancing UPS Supports Automated Update Notification	Data Import Tool Network Port Performance Monitoring Data Balancer Spare Distributor

Comparison Chart:

Simple. Intuitive. Effective.
Building upon our foundation of storage expertise and relentless innovation, Overland offers a powerful set of software tools that help you to store, manage, and protect your data with greater ease and power. Whether you're integrating a new SnapServer into your Windows domain, sending or receiving data across multiple locations, or viewing the current status of all your Overland devices, our software is simple to deploy, intuitive to use, and effective for the task.

	RAINcloud OS	GuardianOS	Create Private Cloud	SnapServer Manager	Snap EDR
Product Type	Software	Software	Software	Software	Software
Description	Linux-based platform OS for Scale-out NAS	Linux-based platform OS for NAS	Multi-platform file syncing	Java-enabled management for multiple SnapServers	Multi-directional, WAN-based replication
Product Line	SnapScale Series	SnapServer Series	SnapServer NAS	SnapServer and Snap SAN	SnapServer Series
Capability	-	-	Fast, free, unlimited and secure file-syncing	Remote Management	Replication (with Snap EDR™)
Included With	All SnapScale Systems	All SnapServer systems	SnapServer NAS	SnapServer N2000, 410, 210, SnapServer SAN S2000	All SnapScale Systems
Optional With	-	-	-	-	All SnapServer systems

Documentation:

Download the RAINcloud OS Datasheet (PDF).