On 2013-03-16 15:20, Bob Friesenhahn wrote:
On Sat, 16 Mar 2013, Kristoffer Sheather @ CloudCentral wrote:
Well, off the top of my head:
2 x Storage Heads, 4 x 10G, 256G RAM, 2 x Intel E5 CPU's
8 x 60-Bay JBOD's with 60 x 4TB SAS drives
RAIDZ2 stripe over the 8 x JBOD's
That should fit within 1 rack comfortably and provide 1 PB storage..
What does one do for power? What are the power requirements when the
system is first powered on? Can drive spin-up be staggered between JBOD
chassis? Does the server need to be powered up last so that it does not
time out on the zfs import?
I guess you can use managed PDUs like those from APC (many models for
varied socket types and amounts); they can be scripted on an advanced
level, and on a basic level I think delays can be just configured
per-socket to make the staggered startup after giving power from the
wall (UPS) regardless of what the boxes' individual power sources can
do. Conveniently, they also allow to do a remote hard-reset of hung
boxes without walking to the server room ;)
My 2c,
//Jim Klimov
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