Quantum PX720 User's Guide Page 50

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Chapter 1 Library Description
Library Components
Quantum PX720 User’s Guide 27
Tape Drives 1
The Quantum PX720 can hold up to 20 SDLT-320, SDLT-600, LTO-2,
LTO-3, and LTO-4 tape drives.
Table 10 Tape Drive and
Cartridge Specifications
* Compressed capacity assumes a 2:1 compression ratio.
When fewer than 20 drives are installed in a Quantum PX720, the tape
drives must occupy consecutive drive clusters, beginning with drive
cluster 0 (refer to the label located on the inside of the back door for tape
drive cluster locations).
The drives used in Quantum PX720 are more reliable than standard
drives due to the automated environment.
If a drive experiences read/write errors when the AutoClean function is
enabled, the library issues an error message stating that drive cleaning is
required. Without user intervention, the CHM (cartridge handling
Tape
Cartridge
Transfer
Rate
Cartridge
Capacity
Cartridge
Capacity
(compressed)
Total Library
(PX720) Capacity
Library
Capacity
(compressed*)
Quantum
SDLT320
16 MB/sec 160 GB 320 GB 104 TB 208 TB
Quantum
SDLT600
36 MB/Sec 300 GB 600 GB 194 TB 389 TB
Quantum
DLT-S4
60 MB/Sec 800 GB 1600 GB 518 TB 1.03 PB
(Petabytes)
HP LTO
Ultrium
Gen II
30 MB/sec 200 GB 400 GB 146 TB 292 TB
HP LTO
Ultrium
Gen III
80 MB/sec 400 GB 800 GB 292 TB 584 TB
HP LTO
Ultrium
Gen IV
120 MB/sec 800 GB 1600 GB 584 TB 1.17 PB
(Petabytes)
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