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Perfect condition, very low use, was used as a backup drive for restoring tape backups to a test system that is now obsolete. Has been tested prior to sale, no physical damage (real or cosmetic).

Features
Hardware encryption: AES‑256‑GCM, T10 application‑managed (SECURITY PROTOCOL 20h reported with three AES‑256 algorithm entries). Works with LTFS, Bacula, Veeam, Bareos, IBM Spectrum Protect and similar.
WORM media support (VPD page B0h, WORM = 1).
Up to 4 partitions, so it is LTFS‑ready (LTFS uses 2).
Hardware compression (SLDC), currently enabled.
Speed matching 40 to 160 MB/s in 14 steps; capacity scaling (SET CAPACITY) for faster access on short tapes.
Dual‑port SAS 6 Gb/s with a library automation interface (ADC‑3 / ADT‑2), so it can serve in a TS3100 / TS3200 / TL2000 / TL4000 class library or standalone.
TapeAlert and very‑high‑frequency status polling for monitoring software.
Model: IBM ULT3580‑HH6 (LTO Ultrium 6, half‑height)
IBM part number: 35P1978 (reported in the drive's INQUIRY data)
Serial number: 10WT111347
World‑wide name: 5005 0763 1214 B90D
Firmware: KAJ9 — build 163206, 4 May 2020. IBM lists KAJ9 as the current microcode for the 2.5 TB half‑high LTO‑6 SAS drive.
Firmware history: Updated from G9P1 to KAJ9 on 13 Sep 2026 (the drive's own event log entries were stamped G9P1; kernel log shows the drive re‑attach at KAJ9).

Interface

6 Gb/s SAS, external mini‑SAS port on the enclosure (dual‑port on the mechanism, one host connection at a time). Currently linked at 6 Gb/s on port 2.

Standards

SPC‑4, SSC‑4, SAS‑2, ADC‑3 / ADT‑2 (library automation interface)

Form factor

Tabletop external enclosure with its own power supply and fan; half‑height ULT3580‑HH6 mechanism inside. Enclosure model: IBM TS2260 (3580‑H6S) or third‑party case, seller to confirm

Capacity

2.5 TB native / 6.25 TB at 2.5:1 compression per LTO‑6 cartridge

Rated speed

160 MB/s native, up to 550 MB/s sustained compressed, 600 MB/s burst (IBM spec)

Buffer

512 MB read/write cache (IBM spec)

Power‑on hours: 66,514 h (≈ 7.6 years)
Tape‑motion hours: 1,249 h — the head has been on moving tape for 1.9 % of powered time
Motion hours by media: LTO‑6: 1,241 h · LTO‑5: 9 h · LTO‑4: 1 h
Cartridge loads: 2,055 lifetime (2,056 after this report's reload test)
Tape processed: 21,328,474 m
Power cycles: 32

Cleaning cycles

8 lifetime · last clean 37 motion hours ago (previous intervals: 217 h, 219 h)

Cleaning requested

No — "Cleaning action not required" and no TapeAlert 20h/21h

Hard write errors

Hard read errors

Over‑temperature events

None recorded (mechanism and tape‑path temperature flags both 0)

Forced resets / emergency ejects

None recorded

CHECK	RESULT
1	No TapeAlert flags set before testing	PASS
2	No TapeAlert flags set after testing	PASS
3	Lifetime hard read and hard write error counters both zero	PASS
4	Run 1: 8 GiB random data written and read back, SHA‑256 matches	PASS
5	Run 1: 8 GiB zeros written and read back, all zero	PASS
6	Rewind from 16 GiB in: 66 s, close to IBM's 62 s average	PASS
7	Cartridge unload (eject) completed	PASS
8	Cartridge reload completed, drive ready	PASS
9	Run 2: 4 GiB random at 512 KiB blocks read back byte‑identical	PASS
10	Run 2: 4 GiB random at 1 MiB blocks read back byte‑identical	PASS
11	Run 2: 4 GiB zeros read back all zero	PASS
12	Forward filemark space landed at logical object 4097, as calculated	PASS
13	Space to end of data landed at logical object 8194, as calculated	PASS
14	LOCATE(16) to block 2048: block content matches source	PASS
15	LOCATE(16) to block 4000: block content matches source	PASS
16	Zero unrecovered read or write errors after all runs	PASS
17	SCSI default self‑test (SEND DIAGNOSTIC) returned GOOD status	PASS

Perfect condition, very low use, was used as a backup drive for restoring tape backups to a test system that is now obsolete. Has been tested prior to sale, no physical damage (real or cosmetic).

Features