HEWLETT-PACKARD COMPANY
HP C1557A
Device Type | Internal Tape Drive |
Interface | SCSI-2 |
Format | DDS, DDS-2, DDS-3, DDS-DC |
Sustained Transfer Rate | 1 MBPS (native), 2 MBPS (compressed) |
Size | 5.25 in. full height |
View | Bottom |

USER CONFIGURABLE SETTINGS | ||
Setting | Label | Position |
» Factory configured - do not alter | SW1/1 | On |
» Factory configured - do not alter | SW1/2 | On |
» Factory configured - do not alter | SW1/3 | On |
» Factory configured - do not alter | SW1/4 | Off |
» Media Recognition System enabled | SW2/3 | Off |
Media Recognition System disabled | SW2/3 | On |
» Factory configured - do not alter | SW2/4 | On |
» Factory configured - do not alter | SW2/5 | On |
» Factory configured - do not alter | SW2/6 | On |
» Factory configured - do not alter | SW2/7 | On |
» Factory configured - do not alter | SW2/8 | On |
» Factory configured - do not alter | JP1/9 | Unidentified |
DRIVE SELECT ID | |||
Drive ID | JP1/Pins 3 & 4 | JP1/Pins 5 & 6 | JP1/Pins 7 & 8 |
0 | Open | Open | Open |
1 | Open | Open | Closed |
2 | Open | Closed | Open |
3 | Open | Closed | Closed |
4 | Closed | Open | Open |
5 | Closed | Open | Closed |
6 | Closed | Closed | Open |
7 | Closed | Closed | Closed |
COMPRESSION SETTINGS | ||
Function | SW2/1 | SW2/2 |
» Compression with software control enabled | On | On |
Compression without software control enabled | On | Off |
Compression with software control disabled | Off | On |
Compression without software control enabled | Off | Off |
TERMINATION POWER SELECTION | |
Setting | JP1/Pins 1 & 2 |
TERMPWR supplied by drive | Closed |
TERMPWR supplied by SCSI interface to drive | Open |
MANUFACTURERS RECOMMENDED MEDIA | ||
Tape | Capacity Without Compression | Capacity With Compression |
60m DDS | 1.3GB | 2.6GB |
90m DDS | 2GB | 4GB |
120m DDS-2 | 4GB | 8GB |
125m DDS-3 | 12GB | 24GB |

DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
LED1 | Green | On | A tape magazine is loaded in the drive |
LED1 | Green | Blinking | A tape magazine is being loaded in the drive |
LED1 | Green | Off | A tape magazine is not loaded in drive |
LED2 | Green | On | A cartridge is loaded in the drive |
LED2 | Green | Blinking fast | The drive is reading/writing or is in a power diagnostic mode |
LED2 | Green | Blinking slow | A cartridge is being loaded in drive |
LED2 | Green | Off | No tape activity |
LED3 | Amber | On | A fatal hardware error has occurred |
LED3 | Amber | Blinking | A non-fatal error has occurred |
LED3 | Amber | Off | Drive operation is good |