Western Digital has announced the availability of samples of 22TB traditional CMR and 26TB tile-type (SMR) hard drives. These are the first drives built from 10 platters and will be widely available this summer.
Western Digital introduced 22 TB hard drives in both the Ultrastar series (model DC HC570) for servers and data centers, and the conditionally consumer Red Pro, Purple Pro and Gold series, respectively, for NAS, video surveillance systems and high-load enterprise-class systems. All of them consist of plates with a volume of 2.2 TB.
In turn, a 26 TB drive is represented by only one model – the server Ultrastar DC HC670. It uses plates of 2.6 TB. This drive, as well as the 22-TB model Ultrastar DC HC570, is primarily aimed at large cloud providers, which are now supplied with their samples.
Western Digital did not disclose all the technical characteristics of new products. However, emphasizes the use of caching technology OptiNAND, which provides speedup when writing large blocks randomly. It is noted that due to this technology, in particular its component under the name ArmorCache, for blocks of 256 KB, the speed increases by 40%, and for blocks of 1 MB – up to 80%. In both cases peak values are implied.
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