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Planet Series Project
Project Saturn  (The Bringer of Old Age)

Objective:
Network Attached Storage :: To provide a NAS device which caters for most standard RAID-like configurations (distributed, replicated and striped storage models), within a natively scalable storage architecture (sporting multi-box, multi-rack, multi-site configurations) that presents common LAN file sharing protocols (including SMB/CIFS and NFS).

Project output includes example hardware component information with assembly instructional documentation, Linux firmware and operating documentation.

Description:
Saturn is an ambitious project with ambitious goals. It aims to be/have;
  • Distributed
    • Must be capable of concatenating multiple drives on either a single node or multiple nodes into a single contiguous storage capacity
    • Must be expansible such that adding another drive to an existing storage capacity must not require recreation of that storage capacity (destroying, creating, formatting)
  • Highly Available
    • Must be capable of replicating data between drives on either a single node or multiple nodes into a single highly available storage capacity
    • Must be capable of multiple replications to support the "two copies in the same rack, one copy in another" principle, and to address the Bathtub curve penalty seen with bulk drive purchases (http://en.wikipedia.org/wiki/Bathtub_curve) i.e. multi-drive/node failures
    • Should support high-latency asynchronous replication to enable multi-site deployments
  • No dependence on strict RAID implementations
    • Must not employ proprietary on-disk storage - Hardware RAID tends to employ proprietary on-disk storage and thus the volume or, indeed, any individual disk becomes unrecoverable when the RAID set is broken
    • Must enable good throughput on commodity equipment - Software RAID tends to bring about poor performance without accelerated hardware features
  • Recovery of replicated data should not be location specific
    • Should be able to recover a failed node at one site either at its home site or at any other site with that data (i.e. being able to transport an empty or out-of-sync node to another location for high speed data recovery is highly desirable)
  • No need for manual maintenance
    • All maintenance tasks should be exceptional and ideally limited to Moves, Adds and Changes
    • All sub-components that require routine maintenance should be automated where-ever practicable
  • No lost data
    • When configuring the NAS it should not be possible to lose or destroy data without asserting a conscious administrative decision to do so.
  • Ideally accessible from Linux and Windows
    • The presented storage capacity should be accessible from Linux and Windows
    • Client access should be delivered via native client interfaces (like SMB or NFS), though client-side agents are acceptable.

Saturn is undergoing constant development. The following key limitations should be noted;
  • The BOOTP/DHCP client capability is currently broken in libMidnightCode
  • Of the three Gluster storage modes (distribute, replicate, stripe) only distribute has been implemented in libMidnightCode
  • The web-based administration interface is read-only.

The Saturn Installation and Operations Manual (in the links below) is a guide to assist people with the assembly, configuration and operation of a Midnight Code Saturn storage appliance.


Screen Shots:
The following screen shots show the software or hardware developed for this project, in action;

Thermaltake Armor VA8000BWS

Empty Armor VA8000BWS

Thermaltake case with empty iCages

Thermaltake Armor iCage in box

Thermaltake Armor iCage

Two-channel SATA-I controller

Add lots of hard drives

Lower iCage full of drives

Middle iCage full of drives

All drives in Thermaltake case

Long data and splitter power cables

Completed Saturn NAS fit-out

Thermaltake made it look cool

Saturn is a NAS you can be proud of

Configure USB in the BIOS

Papers:
The following documents (papers, guides, manuals, etc) have been developed for this project;

Code:
The following code (source, binaries, patches, etc) have been developed or mirrored for this project;

Links:
The following links have been identified as relevant to this project;

Activity:
This project was initiated on Saturday, the 4th of February 2006. Its last recorded activity stamp is Monday, the 14th of September 2015.


© 2004-2017 Ian Latter, All rights reserved.
Midnight Code is a registered trademark of Ian Latter
  All Midnight Code source code is distributed under
version 2 of the GNU General Public License (GPL).