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10

Just recently I read an article by one of Godaddy's engineers about this very topic: Learning to Deal with Learning On their hardware (Dell PERC cards) battery learning cycle happens every 90 days, but no way to know when exactly it'll happen, ie during peak or off-peak hours. They talked about different solutions: Outright disable Battery Learning. ...


8

It does not look like it does... From HDD Support for 2.5TB, 3TB Drives and Beyond (Article is recent - Mar 31 2011, 5:21 PM EDT): IMPORTANT NOTE! Only the Dell H700 and H800 currently support the 3TB drives (H200 will add support later this year) - NO earlier controllers, such as the PERC4/5/6, SAS5/6 (or ANY other Dell controller not mentioned) have ...


7

The short answer is yes, that's the level of performance you should expect to see from the H200. The long answer: The H200 is the old SAS 6iR with SATA 6Gb/s support. It doesn't have the usual features you'd see on a RAID card (battery backup unit, onboard caching, RAID5/6 support). The cache determines how fast your RAID array is (along w/ the # of ...


7

The Dell PERC H310 controller does not have the ability to use write cache. H310 — Entry hardware RAID controller. Provides entry-level performance with no cache. RAID5 functionality with modest performance. Your write performance will suffer as a result of this. This is a very bad controller for ESXi or virtualization using local disks.


7

You should acquire new hardware and install a modern operating system like Windows Server 2012 R2 and then migrate your applications and data to it. Windows Server 2003 is quickly approaching end of support and you should be focusing your effort on getting off of it, not on rigging it to keep on running.


6

You want to grab a Dell Server Install CD from somewhere like here, easier than fooling around with F6 and floppy disks. Just boot from the CD and it will walk you through the process, load drivers (including drivers for other hardware like your NIC, etc) and give you a functional machine at the end of it.


6

PERCs have generally been fairly good about this for me. I don't have a PERC 4e/Di handy, but the general procedure has always been (for me): Remove all disks from the recipient server and reset all controller configurations to factory default (no virtual disks defined). Insert the donor disks to the recipient server. If at all possible, insert the donor ...


6

The Dell PowerEdge R320 is a lower-end 1U rackmount server. Your storage options within that chassis are either 8 x 2.5" small-form-factor disks or 4 x 3.5" large-form-factor drives. Due to the price point of this server, it's commonly spec'd with in the 4 x 3.5" disk combination... Sidenote: one of the things that's happened in server storage recently is ...


5

You need the 'Generation 2' firmware upgrade - HERE's a link.


5

You didn't mention which "latest release" you used. I just tried this and it seems to work fine now. The Dell H700 is using this chipset: # lspci -v | grep LSI 01:00.0 RAID bus controller: LSI Logic / Symbios Logic LSI MegaSAS 9260 (rev 05) Visit the support section of LSI's site, the 9260 is part of the "MegaRAID Value Line". That took me to MegaRAID ...


5

No. The 4KB sector-size on 3TB drives is not supported by the Perc 6/i.


5

In my experience, it's like putting more than 4 GB or RAM into a 32 bit OS, in that the additional space is simply not usable. There is one major difference though, in that if you have support through Dell, and you use unsupported hardware (like a 3 TB drive), you will be invalidating your support, and may very well be told "no" if you need to call in about ...


5

Yes, I believe either your controller or the raid backplane is bad. But I think the controller is the culprit. Can you look up the firmware version of the RAID controller (not to be confused with the system BIOS, which you should also check) and compare to what is available on Dell's site? You may find the version is quite old and that critical issues have ...


5

It's actually rather common, and the main reason it is frequently advised to buy hard drives from different batches in a single RAID set. Identical batches often have identical flaws or thresholds. Also, failures don't always result from just simple old age of the drive, they can also be triggered by minimal power surges, unexpected load for a few minutes, ...


4

Not using .vmdk's or RDMs no. But you could carve it into 3 x 2GB and RAID0/LVM them inside the VM, messy but it works. The only way to get access to a LUN larger than 2TB directly is by adding another controller, connecting this array to it and using passthrough/VT-d to make the VM have full access to the controller and array - it's flakey and borderline ...


4

From what I can remember when I set up something similar (It's been a couple years), the PERC H800 will be installed on the host server (in this case, your database server). From there you connect to the DAS via a mini-SAS cable. You can look at this pdf under sections 5.7 and 5.8 for more info.


4

If you have two SFF-8087 ports on your controller, each one of those ports is a 4-lane SAS port. Natively, that would only be able to address EIGHT disks. With the use of an expander on the backplane, you can accommodate a greater number of disks. So if your backplane can fit TWELVE drives, there's an expander on it. Also, look at the server. See if there's ...


4

I don't believe there's space for what you want if you wish to use 3.5" disks - have you considered using 2.5" disks instead? if you did you could easily fit what you want into the machine and generally a 2.5" 10krpm disk will perform roughly on par with a 3.5" 15krpm disk - especially when fronted by a nice bit of SSD cache as you wish. I use this solution ...


4

It's not possible to say precisely what the odds of X drives going out in Y amount of time are, but it is safe to say that drive failures are not completely independent, as commonly assumed. Multiple disk failures in the same array within close temporal proximity are actually a fairly common occurrence. Less than a month ago, we had 4 drives fail over ...


4

This error corresponds to the cache module on the controller. At this point, you need to probably replace the RAM or the actual PERC controller. This should be standard warranty work.


4

The MD1200 cabinet is a "just a bunch of disks" (JBOD) enclosure. Since it sounds like you want to address it as a single volume a hardware RAID controller, like the PERC you describe, will do what you want. Your BIOS sounds like it's not executing the option ROM on the controller. Without the option ROM you won't get any signs of the controller in your ...


4

No, you can't move an HP Smart Array RAID group to a Dell Perc controller without reformatting. The array metadata is stored on the disks, so you'd need a system with an HP Smart Array controller to transfer the array set to. The P410i controller is an embedded controller, so your ML350 G6 would need a new system board to repair. You could also substitute a ...


3

j = jumper sas = serial attached SCSI act = action This is an operation LED cable


3

The controller state requires that both the Controller Firmware and the kernel module (driver) be up to date. Once I updated both of those the controller state changed to "Ready."


3

Looks like the code is just bogus. line 194 of the perl script says: } elsif ( $state =~ /non-critical|degrad|charging|learning/i ) { $warn++; So, if it detects "non-critical" in the text then it gets moved up to warning. change } elsif ( $state =~ /non-critical|degrad|charging|learning/i ) { to } elsif ( $state =~ ...


3

Please take a look at the following info: The default cache policy on a physical disk is Enabled in SATA drives and Disabled on SAS drives. When physical disk caching is Enabled, disk I/O performance is improved, but a power outage or equipment failure might result in data loss or corruption. NOTE: It is recommended that you use a backup power source for ...


3

The H200 controller disables all disk caching built into the drives by default. If the server has battery backup you can enable basic drive caching on the Logical Volumes without risk. Goto www.LSI.com (The controller is made by LSI) and download and install MegaRAID Storage Manager. Highlight the Virtual Raid Volume, right click, properties. Enable ...


3

You can use the Linux hdparm utility to set your provisioning parameters in this fashion: root@ubuntu-10-10:~# hdparm -N /dev/sdb /dev/sdb: max sectors = 312581808/312581808, HPA is disabled root@ubuntu-10-10:~# hdparm -Np281323627 /dev/sdb /dev/sdb: setting max visible sectors to 281323627 (permanent) Use of -Nnnnnn is VERY DANGEROUS. You have ...


3

We have not seen any thing like that. They might have introduced that in the 12.10.1 version of the firmware thought. Our servers are currently on 12.10.0 Dell really doesn't like you running disks that arn't provided by them.


3

I replaced batterys on 4 diffrent perc 5/i controllers just a week ago. It took about 12-24 hours to show up as OK state.



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