Yes, DDS or richtech both are diskless programs for cafe used. The perfomance and reliabilities is based on the configuration of ur server. matter of how much $$$ u dumb in and the how u configure ur network. some running manage switch and some unmanage.

to be frank, the resolution of ur screen directly affect the volumn of date been transfered from server to ur client, what i mean here is not the desktop resolution by gaming resolutions. 1680x 1050 COD4 need almost double of size if compare to 1024x1050. so different spec need different server. the attachment is what i have been tested for a newly cafe.

u can see that 3x500GB RAID0 with buffer on can highly transfer more than 200MB per seconds. so the bottle neck is on ur network adapter. maybe some of u will say i have 2 network adapter in my server configuration with different IP. eg: 192.168.1.100 and 192.168.1.101

ok, do u noticed that this configuration is seperated the client pc into 2 channel. which mean 1 to 30 pc refer to adapter no1: 192.168.1.100 and pc 31 to 60 to adapter no2: 192.168.1.101. what if all ur customer is sitting only from pc no1 to pc30? this means ur adapter 2 is on idle (sleeping mode) all the data is transfer throught adapter no1: 192.168.1.100

everyone knows that 1000based /1Gbps is 1000 mega bit per sec but not mega byte:

1byte = 8 bit

so ur 1000based is around 116Megabyte per second.

u can cleary see that even ur HDD can transfer 200MB per second but u running on adapter no1: 192.168.1.100 which caused the bottleneck 116MB limit. so i advice running network teaming as a solution. with Network teaming (NLB) u can easily combine 2 network adapter or 3 above to become a single channel. which means u have only 1 IP on ur server with 2/3 network card.

when the bandwidth is more than 100mb and the program will automatically using the 2nd adapter to transfer date for the following transfer, and if ur server is really powerful HDD trasnfer rate is more than 350MB .. so the program will use all the 3 card to transfer ur data.

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Added on May 18, 2008, 6:33 pmas refer to above ....someone mentioned running 2 diskless server will have zero downtime.. sorry and no offence, infact u still need the 3rd server.

the 2 server running on synch is to reduce the heavy duty carry on single server. which mean load balance. ok now is the prob. when the admin update or do some changes on server 1 and endup a mass or something wrong... sorry to say that the synch is real time.. so ur server 2 is gone as well. for me.. i'll try my best to backup a single server for ER used.

from the above post, i have tested on some issue... personally, i think that from the review and attachment above... i barely believed that 1 server could support up to 60 PC without synch. of coz.. matter of how do u set on ur write sector. ( new VR150 300GB WD HDD with RAID0 buffer on ) could solve all the doubt.

approximately 150MB write speed ... (review on google) .. no HDD to test yet.. i'll post my review once i got the HDD.

no hard feeling or offence to any parties..just my 0.02 cents
have a nice day
best regards
Takashi