Portakabin Modular Construction
I had a small discussion today with a few folks on Twitter that was a forerunner to a Wikibon “Peer Incite” discussion on whether RAID was still relevant or not (hence the title of this post). It seems to me that perhaps the Wikibon discussion was a good way to [...]
This is a series of post discussing storage array architectures. Previous posts:
Choosing Between Monolithic and Modular Architectures – Part I
In the first post, I discussed the shared storage model architectures typified by what we sometimes think of as Enterprise arrays, but I’ve called monolithic. This term harks back to the mainframe [...]
I took part in a podcast last night that discussed the XIV platform. One of the “key features” of XIV is the wide striping of data across all spindles. It’s a concept we’re seeing more and more in contemporary storage hardware architectures and one that’s being shoe-horned into older storage arrays too. Have you ever [...]
Yesterday, EMC announced Fully Automated Storage Tiering (FAST), their much hyped and much anticipated storage feature enabling the automated moving of data between tiers of storage on a policy basis. However the most notable missing feature in the EMC announcement was the lack of support for legacy DMX-3 [...]
It’s the end of another year and of course time to the obligatory posts on predictions in the industry for the next 12 months. True to form, I’ve spent some time thinking and here are my top 5 ruminations for the coming year.
EMC join SPC. EMC will finally have the epiphany we’ve all been [...]
Thanks to all those who posted in response to Understanding EVA earlier this week, especially Cleanur who added a lot of detail. Based on the additional knowledge, I’d summarise again:
EVA disks are placed in groups – usually recommended to be one single group unless there’s a compelling reason not to [...]
Today IBM made a slew of new product announcements. None of it was a surprise due to lots of pre-announcement leaks and the fact the IBM session in Montpelier was to a certain degree the formal announcement of products already mentioned in standard press releases.
I can only describe the new product releases as slow [...]
There’s been a lot of talk recently about the position in the market for Nextra, IBMs disk storage product, acquired with the purchase of XIV at the beginning of the year. I’ve been mulling it over and I have to say it creates a dichotomy for me.
On the one hand I see some of [...]
Hitachi Global Storage Technologies (the old IBM Disk Division) have announced a 500GB 2.5″ drive for laptops. Not particularly interesting I hear you say, however these latest drives from HGST now come in Standard and “Enhanced Availability” versions. The enhanced version claims to be able to run a 24/7 workload rather than standard [...]
Following on from BarryW’s comment to my XiV post, I’ve been thinking over how the XiVarchitecture works. When a disk fails and the missing mirrors need to be recreated, then the data is likely to exist across all or most of the configured drives. Logically it would make sense that the target for the new [...]
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