
HP
HP C7975A Ultrium LTO-5 Data Cartridge - 1.5TB/3TB
LTO-5's 1.5TB native capacity and AES-256 encryption make this HP cartridge the cost-efficient backbone of any serious tape backup rotation.
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Overview
Key Features
Sold as 1 EA.
High capacity; low cost per GB.
Native AES-256 bit key encryption.
Active internal head cleaning; self-diagnostic capacities.
Dependable record retention.
Specifications
Drive Type
LTO
Compatibility
Ultrium LTO-5 (read/write); LTO-6 (read only)
Native Capacity
1.5 TB
Compressed Capacity
3 TB (2:1 ratio)
Tape Length
2,775 ft
Encryption
Native AES-256 bit
Part Number
C7975A
Form Factor
1/2-inch Ultrium
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View on Amazon →Frequently Asked Questions
What is the native vs. compressed capacity of this cartridge, and when does compression actually kick in?
Native capacity is 1.5TB; compressed capacity is 3TB. Compression is hardware-driven by the tape drive itself using a 2:1 ratio assumption — actual compressed throughput depends entirely on your data type. Highly compressible data (text, logs, databases) approaches that 3TB ceiling. Already-compressed files (video, encrypted archives) will land close to native.
Is this cartridge compatible with LTO-4 or LTO-6 drives?
LTO-5 cartridges are readable and writable in LTO-5 drives, readable (but not writable) in LTO-6 drives, and not compatible with LTO-4 or earlier drives. If you're running a mixed-generation tape library, verify drive generation before loading.
What does "active internal head cleaning" mean in practice?
The cartridge itself carries a cleaning mechanism that removes debris from the read/write head during normal operation — without requiring a separate cleaning cartridge on every maintenance cycle. This reduces error rates over the cartridge's lifespan and is particularly valuable in high-duty-cycle archival environments.
How long can data be retained on this cartridge?
HP rates LTO-5 tape media for 30-year archival life under proper storage conditions (cooled, low-humidity environment, away from magnetic fields). This is a conservative manufacturer figure — real-world retention depends heavily on storage conditions.
Does this cartridge support hardware-level encryption, and how is it managed?
Yes — native AES-256 bit encryption is built into the LTO-5 specification. Key management is handled at the drive or library level (not the cartridge itself), so you'll need compatible encryption-capable hardware and key management software to enable it. The cartridge is the storage medium; the drive enforces the encryption.