Normis,
Can we assume that any RAM which works perfectly in an RB1000’s DIMM slot will also work perfectly in the RB1100’s DIMM slot ?
If it does not, please advise as to the RAM specs the RB1100 requires.
I asked our friendly MikrotTik distributor but they did not have an answer.
Regards,
Terry Froy
Spilsby Internet Solutions
it’s the same as on RB1000
One can only wish but that is not the case.
The Crucial (Micron) 2GB modules that I found as reliable on RB1000 do not work reliably on the RB1100.
I tested 3 known good modules yesterday. Two of them caused the RB1100 not to post. The third module seemed to behave well.
I tested two of the bad Crucial modules that would not allow the RB1000 to reboot. Both seemed to work fine with the RB1100.
I had two Kingston modules that would not reboot with the RB1000 but otherwise worked fine. One seemed to work with the RB1100. The other would not allow the RB1100 to post.
Because of these uncertain results, I made the decision to ship all my RB1100 stock without RAM upgrades even though many of my customers wanted them.
I am going to wait until the next production RB1100 is available and we can buy as many as we want. At that point, I’ll start testing RAM again.
It would have been real nice if Mikrotik engineers would have tested some modules and given a list of approved RAM, rather than leaving it up to the users to figure out.
Tom
Tom,
Any chance you can disclose what particular Kingston module worked in your test RB1100 ?
The silence from MikroTik on this topic is deafening and as I have to deploy a RB1100 on the 28th which will require three full IPv4 route tables, I need something in it other than the stock 512MB DIMM.
Regards,
Terry Froy
Spilsby Internet Solutions
Replying to my own post…
A single module of Kingston 2GB (Kingston Part No: KVR667D2S5/2G) has been through three consecutive runs of the RouterBOARD memory test (hit ‘t’ at the serial console menu) on one of our RB1100 without errors.
Tom: Hope this helps!
Regards,
Terry Froy
Spilsby Internet Solutions
we have made some changes in v4.10 that could improve the situation in this regard.
Normis,
I am already in contact with Janis concerning this issue [Ticket#2010052666000416] and RouterBOOT 2.27beta2 appears to have solved the problem - running it in on a production router but it certainly seems stable.
Regards,
Terry Froy
Spilsby Internet Solutions
4.10 have 2.27 stable in it, better use that version.
upgraded into 4.10 but the firmware still 2.26 
,do i need to netinstall to update it?
From one of our routers:
/system routerboard print
routerboard: yes
model: "433AH"
serial-number: "xxxxxx"
current-firmware: "2.23"
upgrade-firmware: "2.26"
/system routerboard upgrade
Do you really want to upgrade firmware? [y/n]
n
action cancelled
Upgrading the version of RouterOS doesn’t upgrade the firmware (RouterBOOT), it just makes it available to the system for installation.
fixed with
/system routerboard settings set force-backup-booter=no
drag the 4.10 into the winbox files list,
then
/system routerboard upgrade
make sure to backup first.
routerboard: yes
model: “1100”
serial-number: “xxxxx”
current-firmware: “2.27”
upgrade-firmware: “2.27”
I would rather not report my results yet.
I am starting over on the RAM testing since MT has declined the responsibility. I bought 2 each of 6 different modules last week and tested them on a single RB1100. Two of the six failed immediately. Another had problems. The other three tested fine.
Since then, I bought another 25 of the modules that I considered the most likely to remain stable.
I have 50 more RB1100 arriving this weekend. I’ll be upgrading about 25 and thoroughly testing them all.
If they all test good, I’ll report my findings.
Many thanks,
Tom
Tom, did you test with the new firmware that was released to address the memory issues (2.27)?
That is great news! I was running RouterBoot 2.26. I shipped the last RB1100 a week ago.
I will retest all RAM modules with 2.27 when this next batch of RB1100 boards arrives on Saturday or Sunday.
I’ll report all my RAM test results next week.
Many thanks,
Tom
Will wait for test report,thanks a lot dude…
any results with new firmware, beta tests of this bootloader version looked promising.
Tests were made with RouterOS 4.9 using RouterBOOT 2.26
and then RouterOS 4.10 using RouterBOOT 2.27
All memory is 2GB 200-Pin SO-DIMM DDR2 667 (5300)
\
passed with both ROS and RouterBOOT versions
passed with both ROS and RouterBOOT versions
failed to post with ROS 4.9 and RouterBOOT 2.26
passed with ROS 4.10 and RouterBOOT 2.27
failed to reboot with both versions
failed to reboot with both versions
passed with both ROS and RouterBOOT versions
but occasionally failed to reboot both versions
passed with both ROS and RouterBOOT versions
failed to reboot with both versions
failed to post with ROS 4.9 and RouterBOOT 2.26
failed to reboot with ROS 4.10 and RouterBOOT 2.27
NOTES: Most of the RAM tested came from Newegg.com. Two pieces of every module were purchased and tested with consistent results. The one exception was PNY Optima which delivered two different RAM modules under the same part number and packaging (different PCB layout, different RAM ICs, different results).
Conclusion: The lack of compatibility with RAM modules is quite disappointing. RouterBOOT 2.27 has made some improvements in this. The initial post problems have disappeared. We ended up buying 20 more of the WINTEC AMPO Model 3AMD2667N-2G-R and installed, tested and shipped in 20 RB/1100 on June 8th. All tested fine for boot and reboot. We ran full memory tests on all of the above RAM and they all passed all memory tests. The only remaining problem with some RAM modules is when the RB/1100 hangs on reboot. We now test all RB/1100 boards for reboot after any memory upgrade. We hope this helps others. We will continue working with Mikrotik to try and improve RB/1100 RAM compatibility.
Tom,
Our memory passed multiple memory tests with RouterBOOT 2.26, however, it still caused the RB1100 to reboot approximately 10 seconds after starting a format of a 2GB MicroSD card.
This may be something you want to add to your test suite before determining 100% compatibility with a certain type of module.
Regards,
Terry Froy
Spilsby Internet Solutions
Thanks but how do you know that your memory caused the reboot? And what brand and model of memory was it?
I found similar problems when formatting large microSD cards on the RB450G. It seemed like they were assigning all CPU resources to the format instead of making it a well behaved lower priority task.
One thing that I found was that all of the tested memory passed the MT memory tests found in the RouterBOOT menu. But many of them still hang during a reboot. I still suspect that it is a code (timing) problem in RouterBOOT rather than a memory module problem.
We had similar problems and issues with the RB1000 and RAM upgrades.
Tom
From talking to Terry, it’sKingston KVR667D2S5/2G and the same MicroSD card formats fine with the stock 512MB of RAM that Mikrotik provide.