This chapter explains how to set up and support file systems and related hardware.
![[Note]](images/note.png) | Note |
|---|---|
Before attempting to configure any of the features and tunables described here, check that they are supported by your target C5 system. Consult the appropriate document in the C5 2.1 Target Platform Collection to determine which features and tunables your target version supports. For descriptions of available features and tunables, see Section 2.1, “Configuration Options”. For more details concerning features, see C5 man pages section 5FEA: C5 Features . | |
This section reviews the file systems and related media supported for the C5 2.1 operating system. As stated in the note, support for specific C5 file systems and hardware devices depends on the target family.
The C5 2.1 product supports the following hardware, although not necessarily for all target platforms:
- Flash memory
Flash device can be accessed with two different drivers : the rawflash flash driver which performs direct access to the flash and the flash flash driver, this driver provides wear leveling of the flash device. When using the flash as a disk, the second driver should be used. While the first driver can be used to update an image or a rom disk stored in flash.
- IDE hard disk drives
Supported hard disk drives must be connected to an IDE, ST506 or ESDI compatible disk controller.
- RAM disk memory
RAM disk support allows you to create disk-like entities and use file systems in random-access memory.
- SCSI hard disk drives
Selected SCSI hard disk drives and SCSI-PCI I/O processors of the NCR53C8xx family are supported.
- SCSI CD-ROM drive
SCSI CD-ROM disk drives are supported.
The C5 2.1 file system requires that you use special device driver files to read from and write to these devices. See Section 4.3, “Special Device Driver Files” and special(7S) for details.
The C5 2.1 product supports the following file systems, although not necessarily for all target platforms:
- Network File System (NFS)
NFS is the standard among UNIX operating systems for sharing file systems over the network. C5 systems can support both NFS client access to shared file systems and NFS server capabilities to share local file systems with other systems on the network.
- File Allocation Table (FAT) File System
Also known as the MS-DOS file system, this supports file allocation tables with 12, 16 or 32–bit entries, making it possible to support long file names.
- UNIX File System (UFS)
Also known as the Fast File System, this supports long file names and links, and is the required type for file systems exported through NFS.
- ISO 9660 File System
The C5 2.1 product supports the use of the ISO 9660 file system.
- Swap File System
The C5 2.1 product also supports the use of a swap partition on supported local hardware devices.
The following table summarizes which file systems are supported for which media.