HP C7975A Ultrium LTO-5 Data Cartridge - 1.5TB/3TB

Name: HP C7975A Ultrium LTO-5 Data Cartridge - 1.5TB/3TB
Brand: HP
SKU: C7975A 1/2-Inch Ultrium LTO-5 Cartridge

Overview

The HP C7975A is an LTO-5 Ultrium data cartridge offering 1.5TB of native capacity and up to 3TB compressed — positioned squarely as a cost-effective medium for backup, restore, and long-term archival workflows. At 2,775 feet of tape length, it supports the sustained sequential throughput that tape drives are optimized for, making it well-suited to nightly full backups or tiered cold storage in environments where access latency is acceptable. The integrated AES-256 encryption capability (managed at the drive level) brings enterprise data security to tape-based workflows without external hardware or software dependencies.

This cartridge is built for IT departments, MSPs, and archivists running LTO-5 or LTO-6 tape libraries who need reliable, high-capacity media at a predictable cost per GB. The active internal head cleaning mechanism is a meaningful operational advantage in high-cycle environments — reducing the frequency of standalone cleaning cartridge runs and lowering the risk of read/write errors caused by head contamination. With a 30-year rated archival life, it also serves organizations with regulatory retention mandates that require durable, air-gapped long-term storage. This is not a glamorous component, but in tape infrastructure, "boring and reliable" is exactly the spec you want.

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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Pros & Cons

👍 Pros

1.5TB native capacity per cartridge delivers a low cost-per-GB that disk-based backup at this scale cannot match.
AES-256 native encryption provides enterprise-grade data security without requiring software overhead or a separate encryption appliance.
Active internal head cleaning extends the usable life of both the cartridge and the drive by reducing contamination-related read/write errors.
Tape length of 2,775ft supports sustained sequential write throughput — ideal for large backup windows with minimal drive idle time.
30-year rated archival retention makes this a credible long-term cold storage medium for compliance-driven data retention policies.

👎 Cons

LTO-5 is a mature generation — LTO-8 and LTO-9 drives offer significantly higher density, and organizations investing in new hardware should evaluate whether LTO-5 cartridges align with their roadmap.
Sequential-only access means random retrieval of individual files is slow compared to disk or object storage; this is a backup/archive medium, not a working storage tier.
Requires a compatible LTO-5 or LTO-6 tape drive — the cartridge has zero value without that hardware investment, which carries its own significant cost.
Environmental sensitivity (temperature, humidity, magnetic fields) demands careful storage discipline; a poorly stored cartridge can degrade well before its rated lifespan.

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.