Configuring local stroage network

pts.
Tags:
NAS
NIC
Storage network
TCP/IP
Windows XP
Ximeta Netdisks
on my XP machine, I have 2 NICs (one connected to a GB network and on only to a switch connected to only 2 networked disks [Ximeta Netdisks]). On the GB connection (my local area connection) I am running all the standard protocols and on the other NIC (my local storage network) I am running just TCP/IP and LPX (lean packet protocol for the NDAS device communication). The GB connection works fine, but I have very low effective transfers (~800-900K) to the local storage network. Since it never connects to the outside, I assigned an IP address of 100.100.1.1, netmask 255.255.255.0 to the storage network NIC. My question is that I'm not sure if my configuration is flawed and resulting in lower performance on the storage network. I have read a little about bridging but don't think I need it (or do I?) Any suggestions or resources would be appreciated.

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1 Gb would equal 1024 Kb. If you subtract 10-15% for overhead, you’d be right in the ballpark for your transmission speed.

Steve

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  • Japeters
    Um...i think the previous responder meant 1mb=1024k... but i'm not sure where these numbers are coming from and what they pertain to. 800-900k? of what? transfer rate (per second) between system and disk? did you mean 800Kbs? That seems pretty low, considering the internal transfer rate of a SATA drive is theoretically 150000Kbs. Really not sure what your asking or complaining about here. But, just an observation from checking out this technology, are you supposed to have TCP/IP bound to that interface in the first place? The online documentation seems to indicate that TCP/IP is not used because it creates excessive overhead (as in an iSCSI implementation). So i'm wondering if you need an ip address assigned to it at all. Maybe that's slowing it down. But i'd really like clarification on what your asking, because i'm very interested in this technology, as a VAR/Integrator of SAN and NAS solutions.
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  • Stevesz
    I'm not sure whether it is my fingers or my brain that is taking the vacation /g/. I catually meant that 1Gb is equal to1024 Mb. Now rethinking that, your throughput should be higher. I took a trek over to the Ximeta site, and the fastest speeds their hardware handles is 100 Mb connections to your network.Also, it seems not to be a terribly speedy drive they use, so 900 Kbps may be the best you can do with that equipment. What I'd probably do is to set the Nic to 100 full duplex mode and check the transfer rate. Then check it at 1000 full duplex and check the transfer rate. If you are using "Hardware Default" or "Auto Detect", you may not be getting the proper setting on your NIC, and this will hurt any data transfer. If you are still getting a slow rate, check to see if the controlling software keeps a log, and look for relevent entries there, or, if it doesn't, check the event viewer. There may be error or warning messges there to help diagnose the problem you are having. Brain back into nuetral. Happy New Year. Steve
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