Hardware: Db Servers, Web Servers, File Servers. Cpu, Ram, Disk

Jan 20, 2007

I have a lot of questions here so if you can't answer them all I understand. even pointing me somewhere where I could get the answers would be appreciated; hardware sites focusing on server hardware, forums focusing on such, etc.

we plan to have three different types of servers:

- db server (self explanatory. mysql. for forums, mysql driven sites.)

- file server (lots of files around ~2-10MB, consistant 70mbps right now, but we want more room for upgrades. needs a LOT of storage room.)

- web server (lots of php files, but also static things like plain html, images, etc. also includes all misc services for the setup-- dns, etc.)

could I be given a rundown for which hardware each of the three should have? I don't need specifics, even just knowing that more ram is important here while cpu doesn't matter as much, or that the fastest disks available are a must, etc would all be valuable info for me. despite that, I certainly wouldn't mind specific hypothetical hardware configs.

for the database server I'm assuming the more ram the better. not entirely sure about the cpu? also not positive on disks...

for the fileserver, how much ram would be practical or useful? disk io will be an issue I'm because plenty of people will be pulling files at once so the disk needs to read from multiple places. scsi (and even raptors) are not an option as we need 750GB+ of space on a reasonable budget. more ram will take some load of of the disks, but how much is neccessary / reasonable?

for the web server I'm assuming cpu first, then ram, but it'll likely need less ram than the db server?

I'm more lost on the disks than anything. scsi on the fileserver is not an option under any circumstances due to $/GB. for the db & web server I'm willing to pay for scsi if the performance increase really does warrant the extra money, but I'd like to be convinced before shelling it out. if you have benchmarks geared at server hardware when it comes to disks I'd really appreciate it.

also, what's the best way to network these together when colocated? each one with a dual gigabit ethernet port and then the communications go to and from the router?

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Send Mail To Another Servers But We Cant Recieve Mails Another Servers

May 24, 2008

We send mail to another servers but we cant recieve mails another servers. We can't recieve with webmail and outlook.

I look logs but there is no error and our ip is not in blacklist.

there is the error in our server


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Tracing route to mysite.com [xx.xx.xx.xx]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms
2 30 ms 30 ms 30 ms
3 58 ms 30 ms 30 ms at-4-3-0-1710.CORE-RTR1.PORT.verizon-gni.net [64
4 44 ms 44 ms 44 ms POS3-0-0.GW12.BOS4.ALTER.NET []
5 44 ms 44 ms 44 ms 0.so-3-0-0.XL2.BOS4.ALTER.NET []
6 63 ms 63 ms 137 ms 0.so-2-3-0.XL2.ATL1.ALTER.NET []
7 63 ms 63 ms 63 ms 0.so-7-0-0.XR2.ATL1.ALTER.NET []
8 63 ms 63 ms 63 ms 194.ATM7-0.GW9.ATL1.ALTER.NET []
9 63 ms 63 ms 64 ms internap-gw.customer.alter.net []
10 64 ms 65 ms 63 ms border2.tge-4-1-bbnet2.acs002.pnap.net [64.94.0.
11 64 ms 63 ms 64 ms giglinx-13.border2.acs002.pnap.net [
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.

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