In context: WD, Seagate, and Toshiba had been just lately discovered – and acknowledged – utilizing slower shingled magnetic recording (SMR) know-how in a few of their exhausting drives, with out mentioning the spec of their product documentation. Among these fashions, WD Red drives significantly stood out, as they had been being marketed for NAS shoppers and precipitated a number of patrons to expertise RAID rebuilding points. The firm is now being extra upfront in regards to the challenge and has revealed the whole checklist of drives utilizing SMR to filter out the confusion and assist prospects in deciding with their buy.

Using SMR know-how as an alternative of typical magnetic recording permits HDD producers to place out denser drives at cheaper costs. While that additionally appears like a win for shoppers, these drives will not be appropriate for NAS environments as a consequence of their sluggish write speeds, with SMR being significantly regarding if not disclosed within the product documentation.

Among the just lately found corporations utilizing SMR with out informing prospects, it was simpler to miss Seagate and Toshiba fashions as they weren’t being marketed as NAS drives. Seagate, as an example, recommends its CMR-based IronWolf / IronWolf Pro sequence for NAS prospects.

Western Digital, nonetheless, was discovered utilizing the slower tech in its Red NAS drives (2TB-6TB) and shortly issued a response on its official weblog, an excerpt of which reads:

WD Red HDDs are perfect for residence and small companies utilizing NAS programs. They are nice for sharing and backing up recordsdata utilizing one to eight drive bays and for a workload fee of 180 TB a 12 months. We’ve rigorously examined such a use and have been validated by the key NAS suppliers.

We sometimes specify the designed-for use instances and efficiency parameters and don’t all the time discuss what’s beneath the hood. One of these improvements is Shingled Magnetic Recording (SMR) know-how.

The firm additionally notes that its drive-managed SMR (DMSMR) fashions – (2TB-6TB) Red HDDs – present optimum efficiency for small companies and residential prospects of NAS, as their data-intensive workloads are “intermittent.”

Form-Factor Storage Capacity WD Red WD Red Pro WD Blue WD Black WD Purple
2.5″ 500GB or below CMR CMR
2.5″ 1TB CMR SMR SMR
2.5″ 2TB SMR
3.5″ 1TB or under CMR CMR CMR CMR CMR
3.5″ 2TB – 6TB SMR CMR SMR/CMR CMR CMR
3.5″ 8TB and above CMR CMR CMR

Nonetheless, it has now adopted up with a whole checklist of SMR fashions that ought to definitely assist alleviate considerations and make it simpler for customers to resolve on their subsequent buy.

Unsurprisingly, SMR is current throughout a number of different WD mannequin lineups, and the corporate says that it’ll replace its advertising supplies accordingly and also will share drive benchmarks and their ultimate use instances sooner or later.