Western Digital Ultrastar C10K900 900GB
Enterprise HDD
Part number HUC109090CSS600 - 0B26014 · Ultrastar C10K900 series · 2.5" SAS HDD. If your machine is listed below, this drive is officially supported — not a forum workaround.
Check HUC109090CSS600 price on Amazon partner link
No series-level recording rating is on file for this part number yet — check the exact model for CMR vs SMR before buying it as a large cold copy (SMR is the one trait that makes a 16 TB+ backup copy painfully slow). The 3-2-1 guide and the backup tools encyclopedia cover what to schedule it with.
Compatibility verdict
It appears on the official compatibility lists of 1 machines and series — 1 Synology. This is a Enterprise-class drive: rated for heavier sustained workloads than desktop drives. It is a strong pick for a NAS running 24/7, large-array rebuilds or camera workloads, and enterprise lines are also the drives most widely listed across all five vendors' HCLs. No series-level recording rating is on file for this part number yet, so check CMR vs SMR on the exact model before buying for an array.
Compatible NAS models
Same-capacity alternatives
Other drives listed at 900 GB capacity, ranked by how many machines list them:
Quick answers
Is the HUC109090CSS600 - 0B26014 officially compatible with my NAS?
It appears on the official compatibility lists of 1 machines and series — 1 Synology. Every machine page linked below shows the vendor's own list entry, refreshed daily.
Is the HUC109090CSS600 - 0B26014 a good NAS drive?
This is a Enterprise-class drive: rated for heavier sustained workloads than desktop drives. It is a strong pick for a NAS running 24/7, large-array rebuilds or camera workloads, and enterprise lines are also the drives most widely listed across all five vendors' HCLs. No series-level recording rating is on file for this part number yet, so check CMR vs SMR on the exact model before buying for an array.
Can I use the HUC109090CSS600 - 0B26014 for a 3-2-1 cold backup copy?
No series-level recording rating is on file for this part number yet — check the exact model for CMR vs SMR before buying it as a large cold copy (SMR is the one trait that makes a 16 TB+ backup copy painfully slow). The 3-2-1 guide and the backup tools encyclopedia cover what to schedule it with.
What are alternatives to the HUC109090CSS600 - 0B26014?
At the same capacity, the most widely listed alternatives are Toshiba AL14SXB90EE (8 machines), Toshiba AL14SEB09EQ (7 machines), Western Digital HUC101890CS4200 - 0B27975 (6 machines). The full ranked list is below.