NSLU2
An NSLU2
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| Manufacturer | Linksys |
|---|---|
| Type | NAS |
| Release date | June 15, 2004 |
| Retail availability | 2004–2008 |
| Operating system | Linux based |
| CPU | 266 MHz ARM Intel XScale IXP420 |
| Memory | 32 MB SDRAM, 8 MB flash |
| Storage | External hard drive/flash disk |
| Connectivity | USB, Network |
| Power | 5V DC Adapter |
| Dimensions | 2.1 x 9.1 x 13 cm |
| Weight | 0.2 kg |
The NSLU2 (Network Storage Link for USB 2.0 Disk Drives) is a network-attached storage (NAS) device made by Linksys introduced in 2004 and discontinued in 2008. It makes USB flash memory and hard disks accessible over a network using the SMB protocol (also known as Windows file sharing or CIFS). It was superseded mainly by the NAS200 (enclosure type storage link) and in another sense by the WRT600N and WRT300N/350N which both combine a Wi-Fi router with a storage link.
The device runs a modified version of Linux and by default, formats hard disks with the ext3 filesystem, but a firmware upgrade from Linksys adds the ability to use NTFS and FAT32 formatted drives with the device for better Windows compatibility. The device has a web interface from which the various advanced features can be configured, including user and group permissions and networking options.
The device has two USB 2.0 ports for connecting hard disks and uses an ARM-compatible Intel XScale IXP420 CPU. In models manufactured prior to around April 2006, Linksys had underclocked the processor to 133 MHz, though a simple hardware modification to remove this restriction is possible. Later models (circa. May 2006) are clocked at the rated speed of 266 MHz. The device includes 32 MB of SDRAM, and 8 MB of flash memory. It also has a 100 Mbit/s Ethernet network connection. The NSLU2 is fanless, making it completely silent.
Stock, the device runs a customised version of Linux. Linksys was required to release their source code as per the terms of the GNU General Public License. Due to the availability of source code, the NSLU2's use of well-documented commodity components and its relatively low price, there are several community projects centered around it, including hardware modifications, alternative firmware images, and alternative operating systems with varying degrees of reconfiguration.
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