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[Torro14]

Hello,

i know that the DNS320 supports 3 TB drives, but now I've seen in the forum that some users say that 4TB drives are supported?

My question is, is 4TB support only for HW Rev B? Or can I use 4 TB drives with Rev A1/A2?

[JavaLawyer]

HDDs greater than 2TB can only be used on a NAS with AFD (advanced format disk) support. As such, DNS-320 hardware revisions A1/A2 must be using firmware version 2.01 or greater for larger HDDs (e.g. 3TB and greater).

Although D-Link does not expressly indicate 4TB support, third party vendors have come forward and marketed their 4TB HDDs as "tested" on the DNS-320. You will find a list of compatible HDDs tested by D-Link, along with 4TB HDDs that vendors claim work with the DNS-320, here: DNS-320 - Compatible HDDs

Since D-Link has not tested the 4TB HDDs listed, I can't vouch for their compatibility. You'll have to make your own judgment based on the experience of other DNS-320 owners who successfully tested these make/model HDDs.

[JavaLawyer]

I stand corrected. D-Link has tested the following 4TB HDDs on the DNS-320:

• HGST - Deskstar 7K4000 - HDS724040ALE640 - SATA 6G - 4 TB
• HGST - Ultrastar 7K4000 - HUS724040ALE640 - SATA 6G - 4 TB
• Seagate - Barracuda XT - ST4000DX000 - SATA 6G - 4 TB
• Seagate - Constellation ES.3 - ST4000NM0033 - SATA 6G - 4 TB
• Western Digital - WD Black - WD4001FAEX - SATA 6G - 4 TB
• Western Digital - WD RE - WD4000FYYZ - SATA 6G - 4 TB

DNS-320 - Compatible HDDs

[ivan]

One thing I would like to add.  People using this size of disk really do need a tested backup strategy.  I would hate to loose that much data if a disk went down. 

[JavaLawyer]

Adding to ivan's comments, with newer HDDs where compatibility is a potential issue, the simpler the HDD configuration the better. Using a Standard Configuration (rather than RAID, JBOD, or multiple partitions) will mitigate potential issues and make recovery easier in the event of a failure.