On FreeBSD this will be something like /dev/mfid0, /dev/mps0, etc. Get to the command line and find out what the operating system calls the drives. I use FreeBSD, but any of the other BSDs or Linux distros should work just fine. If that all looks good, grab a Live CD of your favorite non-Windows operating system and boot it. You want to make sure that at least 4 SAS channels are in use and that everything has correctly negotiated 12Gbit/sec. Go into the "SAS Topology" menu, which should show you physical links, expanders, and drives depending on what keys you press. I would suggest using the LSI controller (not the Dell one) and going into the pre-boot menus (normally Control-C). Getting nowhere near that and I HAVE to put this thing in production soon.Ĭlick to expand.I didn't see where you specified the type of cable(s) you were using to connect the expander chassis to the Dell server. What do you guys think? Super Micro whitepaper says I should be getting 2.4GBps average with 24 drives at minimum performance. IMPI is basically useless and has no configurable functions that pertain or even could tell me what the hell is going on. We called SuperMicro and looked for help from them as we are certain this could be enclosure issue - Perhaps the backplane firmware or some type of bottleneck on the JBOD itself. Swapped servers with another R620, similar CPU/Ram configurations Swapping HBA with another working exact model Tried few different driver versions as well Tried different SAS DAC cables between controller and JBODĭrives show up in Open Manage as connected 12gbps - Everything is green and looks happy
0x-1.5 under high load (basic data copy)ġ96GB Ram - Swapped out with smaller amounts, for ecc memory tests - all came out clear Performance tests with DiskBench / IOMeter both show 600-700MBpsĬopy/Paste from and two virtual disks in Windows, same/if not slowerĭisk Queuing is very low. OS: 2016 Standard – Fully patched/vanilla configuration Have 2 cards, both same configuration - Wipe config/recreate config - Same results) HBA: Dell Perc H830 – Latest firmware (25.) (Dell’s rebranded LSI LSISAS3108 chipset) Hard Drive: 24x SAS Seagate 12gbps connected, 7.2k 10TB Hard Drives – Model: ST10000NM0096 (revision: E001)
Wondering if I am overlooking something simple. I'm going crazy over here troubleshooting a performance issue that I can't seem to iron out.
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