Tuesday, October 28, 2008

October 2008 Announcements : Disk Storage

Here's my last of four posts on the IBM announcements of last week. I've already discussed most of the really new stuff like e.g. zHPF (High Performance FICON for System z). So here's a summary.

The DS6000 follows the DS8000 regarding old and new harddrives. The 73GB disks will be withdrawn from marketing as of March 27, 2009 (ZG08-0890). But, don't worry, just like on the DS8000, new 450GB 15k rpm disks are available on November 21, 2008 (ZG08-0911). But, what should be really nice about this, is that there seems to be no performance loss as compared to the 300GB disks, on the contrary. Tony Pearson mentions this on his 'Inside System Storage' blog. Just look at the graph he's including in this post. And, by the way, if you want to follow the IBM Storage scene closely, be sure to check out his blog regularly !

On to the DS8000 : Here we have announcements for zHPF and RMZ resync (z/OS Metro/Global Mirror Incremental Resync). I would really want to refer once more to Tony Pearsons post as he really has a very intelligible description of the two features. To make things easy for those who want to read the announcements, there're four of them, two for each DS8000 machine type. For the 2107 : ZG08-0905 and ZG08-0907. For the 242x series : ZG08-0906 and ZG08-0908.

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