Communicator e3000 MPE/iX Release 7.0 Express 1 (Software Release C.70.01) (30216-90328)

Chapter 5 107

Technical Articles

Announcing DAT40 Tape drive Support on MPE/iX

Beginning with Release 7.0 Express 1, MPE/iX supports the standalone DAT40 tape drive.

Software Requirements

Customers wishing to use this new DAT device must be running on MPE/iX 7.0 Express 1

or later version of MPE/iX. This DAT drive is fully tested and certiﬁed with a patch

(MPELXL1) in MPE/iX 7.0 Express 1.

This device is not supported on MPE/iX releases 6.0 and 6.5. There are no plans to support

the DAT40 on these two releases in the future.

Hardware Requirements

The DAT40 works with all the MPE/iX 7.0 supported hardware platforms. For

performance reasons, we do NOT recommend the sharing SCSI bus with the DAT40 drive

and the system’s internal disks. Unpredictable and unacceptable performance may be seen

when disks and the DAT40 are accessed simultaneously (as during STORE/RESTORE).

Product Overview

The DAT40 drive provides 20 GB of storage in native mode. This can be expanded to 40 GB

using hardware data compression with a DDS-4 data cartridge. The actual amount of data

stored in compression mode is dependent on the type of data being stored.

The drive recognizes DDS-4 (40 GB), DDS-3 (24 GB) and DDS-2 (8 GB) media cartridges,

and drive is not compatible with 60m DDS-1 tapes (with 90m DDS-1 tapes it is read

compatible only). The DAT40 provides LVD/SE Wide Ultra SCSI-2 interface for

connectivity.

The performance of the drive in terms of time taken to store/retrieve ﬁles from the DAT40

drive may vary depending on various factors including HPe3000 system conﬁguration,

system load, tools and software packages used to store/retrieve data/ﬁles.

Conﬁguration

Here is an example of what the conﬁguration should look like on the HP3000 for the

DAT40 tape drive:

Sample SYSGEN conﬁguration output on a HPe3000 9x9 server:

io> ld 8

LDEV: 8 DEVNAME: OUTDEV: 0 MODE:

ID: HPC5683A RSIZE: 128 DEVTYPE: TAPE

PATH: 10/4/20.2.0 MPETYPE: 24 MPESUBTYPE: 7

CLASS: TAPE