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Comment Re:How about transfer rate and reliability? (Score 1) 215

There was an article recently (can't remember where) that made the case that with slowing density increase the lifetime of HDDs has to increase because you're not going to replace them after two or three years anyway because the next generation is so much better. Much better MTBF is clearly possible - just look at HGST versus the rest in the Backblaze reports.

Yup, in large arrays the trend is to go beyond RAID6 - see e.g. NetApp's DDP. Too bad there's so little technical info available about it.

Comment Re:Really? (Score 1) 438

There's a significant effect though: The market for lower capacity HDDs has disappeared, and with it much of the volume so the HDD manufacturers have to make their margins at the higher end. 1TB HDDs are an endangered species now because you can get a 120GB SSD for the same price and many consumers don't need 1TB while they appreciate the performance of an SSD.

Comment Re:LOL (Score 1) 438

When I started university the central ICL 1906 mainframe had 384 K words of core, and a year or two later we upgraded to 512KW (24 bit each) of "solid state" memory with the unbelievable access time of 0.3 microseconds. The paging devices were drums because of their much lower latencies compared to disk drives - we had quite a few drums with a couple MB. No mercury delay lines but the VDU display memory was coax delay lines. At least we didn't have to submit our programs on punch cards like the ME and EE peons - we were CS so we had *online* access!

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