Search:

Registered and voted.

I assume this means I have hexadecimal digits enabled as it says hexadecimal digit counts?



Constant : Pi
Algorithm: Chudnovsky Formula

Decimal Digits : 13,300,000,000,000...

I still am running it. Summing is currently been at 29% the last few days so definitely making progress. I guess I should let you know when summing is nearly 100%?

I Typo'd the model. It is the new 12 GB one (ARC-8028). I even used their feature to enable 12G link speed with 6 GB disks and verified via the serial interface they are 12G bit it made no...

I just got two ARC-1883x and ARC-8026-24 SAS expanders from areca to test. Unfortunately I am seeing very similar bottlenecks to the ARC-1882 I tested before. I think its a limitation of their linux...

Performance test is looking better with a new raid controlller.. hopefully should speed up my 13.3 trillion calculation by quite a bit I hope:



Sequential Write: 1.59 GB/s
Sequential...

I used two have two fios 150/75 packages bonded to 300/150. Here is an old speedtest.net picture when I was doing this:

http://www.speedtest.net/result/1848749301.png

Now I only have a single...

Looks like days of posts are missing? Out of curiosity how big is the DB?

Stopped and ran the I/O performance analsys thingy:



I/O Performance Analysis:

Note that this may take a while depending on your hardware configuration.

Working Memory: 179 GB...

My 25 billion benchmark:




Constant : Pi
Algorithm: Chudnovsky Formula

Decimal Digits : 25,000,000,000
Hexadecimal Digits: Disabled

10GB truncation is the areca default. It just doesnt mean much when people use 1 TB drives and what not because its still usualloy <1GB because it like rounds to the nearest 10GB up or below 1TB (if...

If its not random I/O than the HD way should be easier and cheaper and more disk space (if you ever need it).

Honestly you don't even need 10k RPM drives.

I have two 15 disk enclosures hooked...

Actually usually the *opposite* is attempted. The reasoning behind the opposite is that it is more likely that drive part of the same batch (near or sequential serial) are more likely to fail at near...

Yes this is exactly right. I know there are ways around it but microsoft won't do it. There have been patches for grub for *MANY* years that supported GPT booting from any machine. For example here...

Ive been booting off GPT disks for over 5 years. Only microsoft would have you believe you need a machine with a UEFI BIOS in order to boot from GPT.

I have verified compatability of the LSI 6GB sas expander used in a supermicro chasis. Here is what hw info on the cli lists:


# cli64 hw info
The Hardware Monitor Information...

That kind of sounds like a incompatability with the SAS expander. Find out what model of SAS expander for sure. I have tested the 1880 and 1882 with the 6 GB LSI expander and I know it works for sure...

If you do upgrade to a newer/faster controller any of the newer cards should work (ARC-1880, ARC1882,ARC-1680, etc...). Areca is very good about keeping their old arrays/controllers working with the...

I am sure it will be fine. I have seen an ARC-1222 go to 1880 to 1882 just fine. Also I have seen 1212 -> 1260 -> 1280 -> 1880. AFAIK as long as your running a newish firmware (which the 1882 is...

I can verify the BBU was indeed not working but is now that I swapped it with a 1880 to do some testing and well I gotta say that is pretty damn annoying. All their other models took the same BBU.

If they are all just 'hw monitor raid powered on' and nothing else really and web interface is not accessible then it does indeed sound like the issue I saw with the ARC-1222's that were bad...

Nah, it is normal raid6 as I tested the copy speed before I just didn't publish it. Anyway so far no more timeouts or drive failures so I am guessing it was just a bad disk.

Wouldn't this only effect wd's pricing?

Paste your event history from CLI or web-interface. I have RMA'd over 200 areca ARC-1222's with areca that had a similar thing happen that you say is happening. These machines were running linux so I...

Like I said during boot the card says 8/5G (not x8/2.5G which it does if PCI-E 1.0) so its definitely doing x8 PCI-E lanes. Here is from my home machine (1880x) which also shows the same speed:
...