R.S. wrote: < snip ?
You're right, LAN card (and usually SAN card as well) are included in PC server price. I forgot about it. You're wrong with assumption for 200 GbE ports. You don't need it. Assuming that Linuxes on VM share one (or two) OSA GbE port, the bandwith per server can be less. So it's enough to buy FE switches, maybe with one GbE port. There are plenty of cost-effective solutions, not necessarily "No-name Ltd. Made in P.R.C."
Depends, with many virtual linux images sharing one or two GbE ports, a single image can get more that 200 Mbps if needed, others may suffer a little, but it can. With FE switches, a single PC (if setup correctly) will not get any more than 200 Mbps. Right now we have a new director who has stated all distributed servers will have GbE, period. So, due to management decisions, not technical reasons, we would need GbE.
<snip>
What about FCP ? Mid-range DASD is much cheaper, pretty well scalable, also offers FlashCopy-like and PRRC features.
Not sure, we have two or three distributed SAN (total of about 1 TB) and one iSCSI box that is 500GB. Our the current plan is to get a new DS8100 to repalce our current 2105-800 and the 3 distrubed SAN's. We will keep the iSCSI box.
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