Hardware Card for Sun Thumper X4500
This is our old Storage node for dCache with 48 disks inside
Specifications
What's inside the hardware, probably depending on what we're talking about.
- Disk controller model. 6 x Marvell MV88SX6081 (8 ports)
- Network card model: 4 x Intel 82546EB + 1 Mellanox IB MT23108 (added later)
- Space that takes in the rack: 3U
- Max CPUs, Max Disks, Max Mem slots. 2 x AMD Opteron DualCore 290
- CDROM
- Dual power supply: yes
- Front / Back picture (maybe available online?)
- Any other?
Power consumption (measured before and during the CPU/Disk tests)
- Minimum: 1000 W
- Maximum 1130 W
Ambiental details
- External working temperature
- Normal CPU/memory internal temperature
- Air flow (cubic meters per hour)
- Power disipation: 3856 BTU/h
- Noise (dB)
Operations
Interesting information like how to handle it, anything interesting which is not trivial.
How to get into the ILOM
Power up/down procedures
Commands to issue in an internal console
Firmware updates
Replacement of internal components
Installation notes
Instructions on how to set up a new machines that arrives, with things like:
BIOS settings
RAID configuration
Drivers required / kernel compatibility
Check firmware homogeneity with other machines in the cluster
Benchmarks
Information about benchmarks performed in the machine.
Disk benchmarks (i.e. Bonnie++)
CPU benchmarks (i.e. HepSpec06)
Network benchmarks (i.e. Iperf)
Monitoring
Instructions about monitoring the hardware
Power Consumption
Raid Sanity
I’ve gotten cron log from one of my servers today which says:
/etc/cron.weekly/99-raid-check: WARNING: mismatch_cnt is not 0 on /dev/md0
Quick look at
cat /proc/mdstat
showed, that array is allright.
This mismatch_cnt value is the value of the blocks, that are not synchronized between RAID drives. On my server the value was
cat /sys/block/md0/md/mismatch_cnt
and partition was md0, which is BOOT. SO, I quickly found the way to repair the problem by using
echo repair >/sys/block/md0/md/sync_action
watch cat /proc/mdstat
and after repair is completed
echo check >/sys/block/md0/md/sync_action
watch cat /proc/mdstat
After those operations the value of desynchronized blocks went to 0 again:
cat /sys/block/md0/md/mismatch_cnt=
Other?
Manuals
External links to manuals
Issues
Information about issues found with this hardware, and how to deal with them
Issue1
Issue2