Monday Nov 10, 2008

Disaster Recovery in Solaris

Mike La Spina, an engineer in Canada has been a member of my virtual team for about 6 months now. Mike is a great representative of the Open Solaris community, a strong advocate for quality (he doesn't really let me get away with anything) and a voice of reason when it comes to VMware, iSCSI and of course Thumpers. He connected with me in an effort to get me to fix a bug. We fixed it, he continues to suggest ways for us together, and that, to me at least, means team work.

Recently Mike contacted me about his DR plan, and I asked him to make sure he pointed me towards the blog when he published. Mike just posted a day or two ago and it is a great read. I would encourage you to take a look at it. Mike continues to drive as a tireless ambassador for Solaris and iSCSI and ZFS. All cool stuff.

Provisioning Disaster Recovery with ZFS, iSCSI and VMware


Wednesday Aug 06, 2008

Getting there

14:46:53.401 Starting RD=run1; I/O rate: (vdblite); Elapsed: 60 seconds.
For loops: xfersize=524288 threads=4

 interval                            i/o         MB/sec   bytes    read       resp    resp       resp       cpu%      cpu%
                                        rate       1024\*\*2     i/o     pct         time    max       stddev   sys+usr    sys
14:47:05.071         1    1861.87   930.94  524288 100.00    8.589  22.702    1.302    44.0         43.6
14:47:14.030         2    1863.34   931.67  524288 100.00    8.586  36.584    1.272    44.6         44.0
14:47:24.026         3    1863.05   931.53  524288 100.00    8.585  35.810    1.192    43.9         43.3
14:47:34.026         4    1862.25   931.12  524288 100.00    8.586  25.890    1.293    44.3         43.8
14:47:44.027         5    1864.35   932.18  524288 100.00    8.579  28.986    1.126    44.0         43.6
14:47:54.024         6    1858.23   929.12  524288 100.00    8.607  65.024    1.710    44.6         43.0

Sunday Jul 15, 2007

Something borrowed-- Using the work of others and extending on a theme...

A note about the title:

I am going to "borrow" a post from David Weibel, a former Sun engineer. He writes well and he is also an excellent engineer. You can also borrow Sun equipment. Hopefully it will lead to a nice marriage. And, of course, I borrow the catchphrase of a world class New Orleans chef. Onwards...

I just got off a phone call with a vendor trying to implement high-availability on a Solaris client using their iSCSI target. I was gratified to hear how painful it was in other operating systems (and, by extension, painless in Solaris). Here at Sun, we try to make it simple to use the storage stack. Conform to the standard, and it should just work. Particularly if the device is standards-based. Asymmetric, roll your own, hand-crafted devices are great for tinkering, but if you want a world class storage subsystem, you should probably use a standards-based product.

 Here is a link to David Weibel's blog entry on iSCSI and MPxIO, showing how simple it is to hook up a standards based array.

Now, as Emeril Lagasse might say, "Let's kick it up a notch." BAM.  Imagine you want to build that storage device using Solaris as your storage operating system on the array. Hey, you can do that too, now that the Availability Suite, the iSCSI Target, and ZFS are all part of the operating system. Check it out on OpenSolaris.org. The world moves on. Value moves up the stack. A world class operating system with data services, RAID functionality and some of the best plumbing in the industry. Now all you need is a Thumper and a couple of X4600s to run it on.

Did you know you can try out a Thumper, an X4600 and AVS free for 60 days? Try it. Buy if you like it. Send me a note or a comment if you want to try this product set.

 

Also, 'cause I dig good food and good writing, check out this link. The author writes the review so well I gain virtual weight every time I read about the food she eats. 

 

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