NAS Performance Tester averaged 166.34 MB/s write and 292 MB/s read on RAID 1 with two 4TB IronWolf drives; a 6.50GB copy ran about 160 MB/s. Disk 2 had SMART bad / IronWolf warning. The author notes the write gap versus Asustor's 294 MB/s claim may relate to those warnings. That does not establish a healthy-unit minimum.
Test setup, measurements & limitations
PauseHardware: AS1204T RAID 1 with two 4TB IronWolf drives
Updated Mar 20, 2026
Tested: AS1204T, two 4TB IronWolf HDDs in RAID 1 (not four bays populated). Disk 2 SMART bad / IronWolf warning. Client: Ryzen 5 3600 PC, Kingston A2000 SSD, Asustor ASW205T 2.5GbE switch, Windows 11. Author notes Asustor sample relationship.
Applies to: Exact AS1204T but only two of four bays filled and the IronWolf pair had SMART/health warnings. This is an observation on that sample, not a proven lower bound for a healthy four-bay unit.
- NAS Performance Tester averaged 166.34 MB/s write and 292 MB/s read on RAID 1 with two 4TB IronWolf drives; a 6.50GB copy ran about 160 MB/s. Disk 2 had SMART bad / IronWolf warning. The author notes the write gap versus Asustor's 294 MB/s claim may relate to those warnings. That does not establish a healthy-unit minimum.Source location: Configuration et tests / note méthodologique
Measurements reported by the reviewer| Measurement | Result | Conditions & source location |
|---|
| NAS Performance Tester write / read | 166.34 / 292.09 MB/s | NAS Performance Tester 1.700c, five 400MB passes, RAID1 two 4TB IronWolf with health warnings, 2.5GbE; MB/s confirmed on screenshot.NAS Performance Tester DRIVESTOR 4 Gen2 |
|---|
| 6.50GB file copy to NAS | about 160 MB/s | Article reports about160 MB/s; screenshot shows166 MB/s at46% completion copying an Ubuntu ISO from Downloads to NAS X:, not a whole-file average.Test copie de fichiers |
|---|
| CDM SEQ1M Q8T1 read/write | 193.88 / 174.15 MB/s | CDM7.0.0x64 Admin; 5 runs,1GiB; X:0%(11/3662GiB); RAID1 two4TB IronWolf with health warnings; screenshot values.Original CDM chart |
|---|
| CDM SEQ1M Q1T1 read/write | 164.69 / 164.24 MB/s | CDM7.0.0x64 Admin; 5 runs,1GiB; X:0%(11/3662GiB); RAID1 two4TB IronWolf with health warnings; screenshot values.Original CDM chart |
|---|
| CDM RND4K Q32T16 read/write | 23.90 / 22.00 MB/s | CDM7.0.0x64 Admin; 5 runs,1GiB; X:0%(11/3662GiB); RAID1 two4TB IronWolf with health warnings; screenshot values.Original CDM chart |
|---|
| CDM RND4K Q1T1 read/write | 5.04 / 7.99 MB/s | CDM7.0.0x64 Admin; 5 runs,1GiB; X:0%(11/3662GiB); RAID1 two4TB IronWolf with health warnings; screenshot values.Original CDM chart |
|---|
| Power, two HDDs installed | about10.2 W at rest;23.5 W full load | Article observations with two installed HDDs; rest does not establish spindle sleep. Meter and workload details not disclosed.Consommation |
|---|
| Reported acoustic observations | about25 dBA normally;34 dBA during large-file I/O | Two HDDs; room noise masks normal operation; distance and ambient floor not stated.Températures DRIVESTOR4 Gen2 |
|---|
Limits to keep in mind
- Only two bays populated
- Unhealthy sample disks — not a healthy-unit lower bound
- Ongoing vendor relationship stated; sample loan of this chassis not explicit
- Original CDM Q1T1 read screenshot is164.69 MB/s; article text says164.76. Screenshot adopted and discrepancy retained.
- Temperature graphic shows CPU35/25°C and HDD31/24°C in hot/cold columns without explicit state labels or ambient temperature; no load/idle assignment inferred.
- Article RAID50/60 claim is not adopted: official AS1204T table lists Single/JBOD/RAID0/1/5/6/10.