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Half-height drives

Air-flow must be from front to back. The required flow is 5 cfm for ambient air temperatures fluctuating

in the range 10°C–40°C.

Measuring internal drive temperatures

The recommended method of measuring the temperature of critical components is to read the “Max

temperature since cartridge loaded” after exercising the drive by writing data at the maximum data

rate for a period of at least one hour. This temperature correlates closely with the temperature of the

most critical ICs.

Full-height drives

Airflow should be from front to back. The maximum temperature at the Primary Temperature Sensor

should be:

• <25°C above ambient for 40°C maximum temperature ambient environment

• <30°C above ambient for 35°C maximum temperature ambient environment

This equates to:

• <65°C at 40°C ambient (8 cfm airflow)

• <65°C at 35°C ambient (6 cfm airflow)

Half-height drives

The maximum temperature at the Primary Temperature Sensor should be <25°C above ambient for

40°C maximum temperature ambient environment, equating to <65°C at 40°C ambient.

Airflow and cooling

HP LTO Ultrium drives require forced airflow that satisfies the following conditions:

• For full-height internal drives, the airflow at 35°C ambient air operation should be at least 6 cubic

feet per minute (0.17 cubic meters per minute or 10.19 cubic meters per hour) through the product.

Volume 1: hardware integration 17

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HP LTO Ultrium Specifications

General

Category	Tape Drive
Capacity (Compressed)	Up to 30 TB (LTO-8), Up to 45 TB (LTO-9)
Transfer Rate (Compressed)	Up to 900 MB/s (LTO-8), Up to 1000 MB/s (LTO-9)
Interface	SAS, Fibre Channel
Technology	Linear Tape-Open (LTO)
WORM Support	Yes
Encryption Support	Yes (AES 256-bit)
Partitioning Support	Yes
Capacity (Native)	Up to 12 TB (LTO-8), Up to 18 TB (LTO-9)
Transfer Rate (Native)	Up to 360 MB/s (LTO-8), Up to 400 MB/s (LTO-9)
Backward Read Compatibility	Yes (LTO-8 reads LTO-7, LTO-6; LTO-9 reads LTO-8, LTO-7)
Backward Write Compatibility	Yes (LTO-8 writes to LTO-7; LTO-9 writes to LTO-8)