SEAGATE CONSTELLATION ES.3 ST4000NM0043 4TB 7200 RPM SAS 3.5-INCH ENTERPRISE HARD DRIVE - LOT OF 2
READ THIS FIRSTThese two drives are NOT a matched pair and we are not selling them as one. One has 134 power-on hours, the other has 2567. Both numbers are in the title. They are the same model and capacity, both fully working, both zero-filled - but their histories are completely different and the 134-hour drive has an unusual power-cycle count you should read about below.
WHAT THE SMART DATA ACTUALLY SAYS
Serial Z1Z2FA250000C414AHEFPower-on hours: 134Start-stop cycles: 1052Grown defect list: 0Uncorrected errors: 0 read / 0 write / 0 verifyNon-medium errors: 0SMART health: OKFirmware: 0003Manufactured: week 13 of 2014
Serial Z1Z04KVX0000S311C1ERPower-on hours: 2567Start-stop cycles: 217Grown defect list: 0Uncorrected errors: 0 read / 0 write / 0 verifyNon-medium errors: 3SMART health: OKFirmware: 0001Manufactured: this drive does not report a readable date
ABOUT THE 1052 START-STOP CYCLES ON Z1Z2FA25This is the one thing on this listing that looks odd, so here it is up front. 1052 start-stop cycles against 134 hours of runtime is roughly eight power cycles for every hour the drive was spinning. That is not what normal service looks like - it is what a test rack or a repeatedly power-cycled shelf spare looks like. What it is NOT is evidence of damage: the grown defect list is 0, uncorrected errors are 0, and the drive took a complete 4 TB write without a single reallocation. Start-stop cycles do consume head park/unpark life, so we are telling you the number rather than letting you discover it. This drive was deliberately removed from a lower-hour lot we listed separately, because it did not belong under that lot's title.
ABOUT THE 3 NON-MEDIUM ERRORS ON Z1Z04KVXA non-medium error is a bus or interface event - a reset, an aborted command - not a media defect. Three of them over 2567 hours is unremarkable. Its media counters are all zero.
HOW WE TESTEDEach drive was catalogued with smartctl before anything was written to it, then given a full-length zero overwrite of every logical block, then catalogued again. Grown defects and uncorrected errors read 0 before and 0 after on both. The roughly 13 hours each drive gained is that write pass.
HONEST ASSESSMENTThe 134-hour drive is the interesting one - genuinely low runtime for a 4 TB enterprise SAS drive - as long as the power-cycle count above does not bother you. The 2567-hour drive is an ordinary low-mileage used enterprise drive. Good for a lab, a NAS, or spares. These are 2014-era drives sold with no warranty.
INTERFACE NOTEThese are SAS drives. They will NOT work in a SATA port. You need a SAS controller or backplane. We did not record the negotiated link rate, so we are not quoting one.
DATA SANITIZATIONEvery logical block on both drives was overwritten with zeros. We then read back the start, middle and end of each drive and confirmed every byte was zero. Both arrive fully zeroed with no partition table.
WHAT YOU GETTwo (2) bare 3.5-inch SAS hard drives, the exact serials listed above. No caddies, no trays, no rails, no screws, no cables, no adapters.
WARRANTYOut of warranty. No manufacturer support.
SOLD AS-ISSold as-is with no returns. Everything we measured is printed above. If you need a reading we did not capture, ask before buying.
