Information/TSOverview

On the TeraStation mainboard you will find the following chips:
 * Freescale MPC8241LVR266D (IC13)
 * System on a Chip, main processor
 * 266MHz MPC603e PowerPC core
 * 133MHz memory controller EDO/SDRAM
 * 32bit 33/66MHz PCI v2.2
 * I2C interface
 * JTAG
 * Dual serial ports
 * Micron MT48LC16M16A2TG-75D (IC32, IC33, IC34, IC35)
 * 4x 4M x 16bit x 4banks = 4x 256Mbit = 128MB RAM
 * ITE IT8211AF (IC41, IC42)
 * Two IDE controllers
 * Four P-ATA133 channels, UDMA6 support
 * Realtek RTL8110S-32 (IC25)
 * Gigabit ethernet controller
 * Unshielded RJ45 port
 * NEC D720101GJ (IC37)
 * USB2.0 host controller, EHCI and OHCI interface
 * Four USB Type-A connectors, two at front, two at the back
 * Motorola MC68HC908JL8 (IC40)
 * 8 bit microcontroller (MCU)
 * Labeled: TERAPWP001
 * SMSC EMC6D102-CZC (IC43)
 * Fan control and hardware monitoring
 * Fujitsu MBM29PL32TM (IC18)
 * 4MB flash
 * Used for boot, see flash
 * Sipex SP3220EU (IC38)
 * RS232 level shifter
 * Serial port used to connect a UPS
 * Can be rewired to give access to the Terastation Serial console
 * Atmel 93C66 (IC27)
 * 4Kbit serial (Microwire) EEPROM
 * Connected to the RealTek gigabit Ethernet controller for configuration

The chips are also listed in this posting on some Japanese BBS. Here is a replica of the uninformative official specification.

Beside the mainboard, there is also a small board in the front panel to control the LEDs. It's connected to the TERAPWP001 MCU with a 5 pin connection via CN17.

For the 1.0TB version, the disk array consists of


 * four Maxtor 6B250R0 hard disc drives
 * 251000MB, CHS=30515/255/63. Marketing calls this 250GB
 * 16384KiB Cache

or


 * four Western Digital WD2500BB hard disc drives
 * 250056MB, CHS=30401/255/63
 * 2048KiB Cache

or


 * four Samsung SP2514N hard disc drives
 * 238473MB, CHS=30401/255/63
 * 8MB Cache

or
 * four Segate Barracuda 250GB 7200.8 ST3250823A hard disc drives
 * 243481MB
 * 8MB Cache
 * 7200RPM

See also Harddisk Layout.