Chapter 1. Product description
This tape drive is a high-performance, high-capacity data-storage device that is
designed to back up and restore open systems applications. The drive can be
integrated into any supported external tape enclosure or directly into a supported
System x server. It is the fourth generation in the Ultrium series of products and is
available with a Serial Attached SCSI (SAS) interface.
The Customer Replaceable Unit (CRU) part numbers and the Option part numbers
for the IBM LTO Ultrium 4 Half High Tape Drive are shown in the following list:
Table 1. CRU and Option part numbers
Description CRU part number Option part number
IBM Internal Half High LTO Gen 4 SAS Tape Drive 46X5672 44E8895
IBM External Half High LTO Gen 4 SAS Drive, with US
line cord
95Y8007 3628L4X
IBM External Half High LTO Gen 4 SAS Drive, with no line
cord
95Y8007 3628N4X
SAS cable, internal 44E8878
Mini-SAS cable, external,3mx4plug 39R6532
US line cord, 3 ft, 10 A / 125 V 39M5081
Drive features
The drive offers the following features:
v Support for WORM (write once read many) on WORM cartridge types
v Native storage capacity of 800 GB per cartridge (1600 GB at 2:1 compression)
when using Ultrium 4 cartridges
v Native data transfer rate of up to 120 MB per second
v Burst data transfer rate of 300 MB per second for the SAS interface
v 256 MB read-and-write cache
a80hh015
Figure 1. The IBM LTO Ultrium 4 Half High Tape Drive
© Copyright IBM Corp. 2011 1
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