First OptiNAND-based WD HDDs go on sale. 20 TB without SMR

HDD capacities have been rising slowly lately and new larger HDDs often take very long to ship after being announced. But it looks like we are finally getting somewhere: the first 20 TB capacity HDDs (without SMR) are coming, from Western Digital. They’re actually coming to the market with general availability. What’s more, they are interesting because they are the first drives with the recently introduced OptiNAND technology. Read more “First OptiNAND-based WD HDDs go on sale. 20 TB without SMR” »

SSDs more reliable than HDDs? Study shows similar failure rate

In May, we had reported on a study by Backblaze, which publishes statistics on the failure rate of hard drives operated by its service. Backblaze also started reporting failure statistics for the SSDs it uses as system drives and the results at first seemed to be orders of magnitude better. But their new data now shows a picture much less promising, it looks like SSD fatality rates might not eventually be so different from HDDs. Read more “SSDs more reliable than HDDs? Study shows similar failure rate” »

OptiNAND: WD adds flash memory to HDDs, but not in the SSHD way

Lately (actually for several years now) we’ve seldom had news about hard disks. An opportunity to write about a new innovation in this area has come now though. Western Digital has introduced OptiNAND technology, which improves the performance of mechanical drives by integrating NAND Flash memory – but not in the way of SSHDs, which only used it for caching. OptiNAND serves other purposes, and it could be much more useful. Read more “OptiNAND: WD adds flash memory to HDDs, but not in the SSHD way” »