Archival survival guide


Contents
Introduction
Hard disk vs. disk array
Tape technologies
Optical technologies
Apple: Xserve & Atempo
Iomega NAS 200d
Quantum SuperLoader 3
Snap Server 4500
Sun: StorEdge & SunFire
Specifications
Final words


Snap Server 4500
The 4500 is a NAS device in a 1RU chassis -- it has four 3.5in drive bays that accommodate PATA drives. While the Snap Server was submitted with four 250GB drives, in a RAID 5 configuration you would see around 750GB of storage. If you want more, the device can be configured with 400GB drives and a total capacity of 1.2TB -- about it in terms of internal storage. Up to two external Snap Disk 10 expansion arrays can be controlled by the 4500, each with four storage bays for a maximum capacity of 3.6TB, which is a decent amount of storage for a small-to-medium enterprise.

The hot-swap drive cradles are impressive; solid metal fabrication that guides the drive into the bay ensures accurate mating of the connectors with a minimum of fuss. The remainder of the 4500 chassis is also reasonably robust. There is a small fan to cool the two PCI-X slots, one of which is occupied by a SCSI card to enable a tape backup to be directly connected to the external port.

There is a second small fan to cool the three memory slots and a large blower to cool the CPU's copper heat sink. The fan and blower do appear to draw some air from the drive bays and so provide indirect cooling; the airflow around the drives was surprisingly good. There are no redundant power supplies, just a single 250W unit with dual cooling fans. Connection to the LAN is via a pair of Gigabit Ethernet ports. There is also iSCSI target support.

The 4500 is straight forward to install and remote configuration and management is also easy on a user friendly browser interface.

Interoperability is very good with Windows, Unix, Apple file systems, and a reasonable swag of common clients supported.

There is a useful collection of bundled software supplied, although only two are full copies; Bakbone Netvault Workgroup Edition and Symantec Powerquest Datakeeper (desktop backup).

Product Snap Server 4500
Price AU$7469
Vendor Adaptec
Phone 02 8875 7874
Web www.adaptec.com
 
Interoperability ½
Supports a wide range of network protocols and security protocol support is also good.
Futureproofing
Internal expansion potential is good but extenal expansion capability is average.
ROI ½
Very inexpensive and performance is surprisngly good although expansion potential is relatively low.
Service
3-year hardware warranty + option for additional 2 years. On-site Service options available -- NBD or 4 hour.
Rating
Snap Server 4500


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