> H700 you will be happy with performance probably not so happy with drive replacement outage though. I tried lsi and dell IT firmware to no avail so I assume it's the drives also since hooking any sata drive up did indeed work, just something about the sas drives (not really sas but they are called that). Had to make single drive raid 0 then create pool. > Cc: openindiana-discuss at > Subject: Re: Dell R510 SAS2 Backplane with SAS2008 (PERC H200) i wasnt sure if the backplane was truly split for each channel or if somehow the controller saw all disks on both channels and was multipathing. > im just thinking out loud, i wasnt sure if you could connect 2 raid controllers to the dell backplane. this would give me the additional 1gb of cahce.
Dell perc h200 sata 3 install#
would it make sense to install both h700s into the system and run a single channel from each card to the backplane? in my case i would make 6 total raid 1 pairs, 3 on each controller and then stripe them with zfs. > also i have very little experience with sas expanders. i wouldnt expect too much of a penalty hit for the controller doing raid 1, and i would suspect a failed drive situation would be more straightforward and "normal" could i just create a bunch of mirrors on a h700 and then use zfs to stripe them.
![dell perc h200 sata 3 dell perc h200 sata 3](https://i.ebayimg.com/00/s/MTA2N1gxNjAw/z/pH0AAOSwFjldpNRH/$_57.jpg)
> since my intent is to run the zfs equavilent of raid 10. > once you create a raid 0 dont you lose some inherent functionality of zfs? if that is the case would it make more sense for me to do the following: if that does not work i have a h700 i can pull.
![dell perc h200 sata 3 dell perc h200 sata 3](https://ae01.alicdn.com/kf/Hed7374f1048f437db9e3f29841a70d09Z/Used-original-font-b-Dell-b-font-H200-PERC-SAS-SATA-6Gb-PCI-e-8-Port.jpg)
> i purchased an lsi controller card last night. Please let me know your thoughts regarding raid 1 vs a bunch of raid 0s on the controller. The lsi 9240-8i should be here tomorrow, i will let you guys know my findings with that. I suppose its also possible that the entire dell line of the sudo 7200rpm sas drives are lacking some SAS functionality as well. I was actually wondering if there is some sas command the h200 simply doesnt recognize. > As far as the drives go I have the same problem with different drives so I have to question if its really the drives. > On Jan 11, 2012, at 8:50, Grant Albitz wrote: Using 2 controllers may make sense if you were pure ssd, I don't see how 12 disks could saturate a 6gbps multiport controller. > Creating the raid0 doesn't lose any functionality that I am aware of. If you want some file bench results of my raidz I can put some together. > I know performance will be good, far better than wirespeed of a 1gbps for nearline type workloads. I tried what you are talking about in the distant past and it didn't work out so well with manageability or performance. > I would stick with single drive raid 0. > Subject: Re: Dell R510 SAS2 Backplane with SAS2008 (PERC H200) If you have a benchmark test you would like me to run against my setups please post and I can humor you with the results. At this point I plan on trying all possible configurations. I am going to try it anyways (I have 12 sas drives + 2 256gb Samsung 830 ssds for read cache so I may take a performance hit on the ssds.). It is a 6gbps card, yet it states it only supports sata 2 devices and not sata3.
![dell perc h200 sata 3 dell perc h200 sata 3](https://m.media-amazon.com/images/I/41C7UVsteZL._AC_SS450_.jpg)
> My reasoning behind the dual controller was simply that each controller has 1gb of nvram cache and I figured the more the better =), I received my 9240 today. Should do SATA 3 - I didn't think that SATA 3 speed for STP was an Next message: Dell R510 SAS2 Backplane with SAS2008 (PERC H200).Previous message: Dell R510 SAS2ěackplane with SAS2008 (PERC H200).Dell R510 SAS2 Backplane with SAS2008 (PERC H200) Rich rercola at Dell R510 SAS2 Backplane with SAS2008 (PERC H200)