NAS Drive Compatibility

Western Digital Ultrastar SS200 3.84TB

Enterprise SSD

Part number SDLL1MLR-038T-CCA1 · Ultrastar SS200 series · 2.5" SAS SSD. If your machine is listed below, this drive is officially supported — not a forum workaround.

Ultrastar SS2.5" SATA SSD

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6
Compatible NAS models
6 Syn · 0 QNAP · 0 Asus · 0 TM
By vendor
3.84 TB
Listed capacity
Western Digital
Manufacturer
Strong pick as a cold copy

This is an SSD — an excellent cold copy for the off-site slot of a 3-2-1 plan: fast sequential transfer, silent, no moving parts to degrade on the shelf. The one catch is charge retention: a powered-off NVMe/SATA SSD slowly loses charge (weeks to months), which matters for a copy that sits unplugged. Keep the offline copy plugged in for a few hours once a month, or keep the 3-2-1 'other' copy on spinning media instead. Pair it with a scheduled backup job — see the backup software encyclopedia (Veeam, Duplicati, Hyper Backup) and the 3-2-1 rule.

Compatibility verdict

It appears on the official compatibility lists of 6 machines and series — 6 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

Synology FS2017 See its full HCL → Synology FS3017 See its full HCL → Synology FS3400 See its full HCL → Synology RS10613xs+ See its full HCL → Synology RS18016xs+ See its full HCL → Synology RS18017xs+ See its full HCL →

Same-capacity alternatives

Other drives listed at 3.84 TB capacity, ranked by how many machines list them:

Synology SAT5200-3840G 103 machines · SAT5200 Synology SAT5210-3840G 92 machines · SAT5210 Micron MTFDDAK3T8TCB-1AR1ZABYY 86 machines · 5100 PRO Samsung MZ-7LM3T8N (MZ7LM3T8HMLP) 81 machines · PM863a Seagate ZA3840NM10001 80 machines · IronWolf 110 Seagate XA3840ME10063 70 machines · Nytro 1551 Synology SAT5221-3840G 70 machines · SAT5221 Seagate XA3840LE10063 69 machines · Nytro 1351

Quick answers

Is the SDLL1MLR-038T-CCA1 officially compatible with my NAS?

It appears on the official compatibility lists of 6 machines and series — 6 Synology. Every machine page linked below shows the vendor's own list entry, refreshed daily.

Is the SDLL1MLR-038T-CCA1 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 SDLL1MLR-038T-CCA1 for a 3-2-1 cold backup copy?

This is an SSD — an excellent cold copy for the off-site slot of a 3-2-1 plan: fast sequential transfer, silent, no moving parts to degrade on the shelf. The one catch is charge retention: a powered-off NVMe/SATA SSD slowly loses charge (weeks to months), which matters for a copy that sits unplugged. Keep the offline copy plugged in for a few hours once a month, or keep the 3-2-1 'other' copy on spinning media instead. Pair it with a scheduled backup job — see the backup software encyclopedia (Veeam, Duplicati, Hyper Backup) and the 3-2-1 rule.

What are alternatives to the SDLL1MLR-038T-CCA1?

At the same capacity, the most widely listed alternatives are Synology SAT5200-3840G (103 machines), Synology SAT5210-3840G (92 machines), Micron MTFDDAK3T8TCB-1AR1ZABYY (86 machines). The full ranked list is below.