As fas as i know ZFS needs more ram for better performance. Do i still need big size ram even if buy this controller ?
1781902
I dont know - but you can try here for answers -- http://serverfault.com/questions/84043/zfs-sas-sata-controller-recommendations
1781903
This card will have no influence on the amount of memory that you need to run ZFS. However, my experience is that you do not need anything like the amount of memory that is sometimes suggested. I have a system with over 60TB of storage and it is running on an old Core2Duo CPU with just 4GB of non-ECC memory. When I copy large files onto the system, I can saturate a 1Gbit Ethernet connection. When copying a file from a client onto the server, I run an MD5 checksum on the file on the client and again one the file on the server after it has been written to disk. I have never seen an error so I doubt that ECC memory is a real essential. This card will have no influence on the amount of memory that you need to run ZFS. However, my experience is that you do not need anything like the amount of memory that is sometimes suggested. I have a system with over 60TB of storage and it is running on an old Core2Duo CPU with just 4GB of non-ECC memory. When I copy large files onto the system, I can saturate a 1Gbit Ethernet connection. When copying a file from a client onto the server, I run an MD5 checksum on the file on the client and again one the file on the server after it has been written to disk. I have never seen an error so I... » Read More This card will have no influence on the amount of memory that you need to run ZFS. However, my experience is that you do not need anything like the amount of memory that is sometimes suggested. I have a system with over 60TB of storage and it is running on an old Core2Duo CPU with just 4GB of non-ECC memory. When I copy large files onto the system, I can saturate a 1Gbit Ethernet connection. When copying a file from a client onto the server, I run an MD5 checksum on the file on the client and again one the file on the server after it has been written to disk. I have never seen an error so I doubt that ECC memory is a real essential. « Show Less
564951
Remember if you are planning on going to 32 gigs its better to have a match set, if you are only planing on using 16gb and later on upgrade than get 2X8 matching sticks. The board is design for a match set and performs better.
494906
I have this MB, and it absolutely refuses to work with all 4 slots filled. Didn't realize I had one of the "bad" ones until I tried to move to a 4x4Gb ram setup. Only the two ram slots farthest from the cpu work. But I love this board enough to be here shopping for a second one - makes a great fakeMac.
598256
Yes. make sure to go through the memory confciguration process after restarts or go into ur BIOS. Should run 20% better on each stick u install. have a nice day.
911539
I finally upgraded my motherboard with one that has six 600mb/sec ports, so I don't use this card anymore. When I did, it had two 1TB drives attached. I think the limitation is more about your MB controllers and operating system rather this card, though. It did the job for a year until I could upgrade.
832943
good evening, I will actually install a 32 gb and not think of any problem, now I have a 16 gb and goes just as well.
368566
hi, Eva. it really depends on what kind of game you want to play on it. if regular online game, it is fine. but you might want to enlarge the RAM as well.
35073
That's pretty much the size. But my suggestion if you haven't already bought this is to get a little bit higher quality controller the one I got didn't last couple weeks.
2151408
Ram memory is soldered so it is unexpandable. You'd have to purchae the variant with 8GB by default. SSD is mSata so you can expand manually.
1799935
It's a little low on RAM, but with another 2GB stick it should be able to run Windows 7 fairly well. I'm running Ubuntu 12.04LTS on mine with XBMC using Aeon MQ5 skin and I have zero complaints. Runs quiet and reliably. The only time I ever have to restart it is when one of my add-ons has an issue (not the machine's fault).
2230022
Yes, it should be fine with an 8GB stick and a 4GB stick. Though you'd get slightly more performance out of 2 x 8GB sticks.
1095569
You have picked a very nice motherboard. I will post the ram I have in mine, it cost, but it really depends on how much you want to spend. Corsair Dominator Platinum 32GB (4x8GB) DDR3 2133 MHz (PC3 17000) Desktop Memory (CMD32GX3M4A2133C9). You can get cheaper ram, but make sure it is DDR3 ram for this board. I think Corsair is the best, but Kingston is good also. Yes, you can put both an SSD and HDD on that board. You should load your OS on the SSD drive since it is much faster than the HDD. I would recommend the Samsung 500GB SSD drive 840 Series, and the Velociraptor 1TB HDD. I have built lot's of computers, and these motherboards are really the top. If I can help you with any other questions you have just let me know.
357674
You need 2 sticks minimum in order to be able to run dual-channel mode, which will significantly increase the speed. So if you buy 1 of these packs of 2 then you will be fine. As mentioned, make sure your motherboard can accept this kind of RAM(240-pin, DDR3, 1600mhz).
1553772
As to your system, these should work just fine. You basically have the same HP as mine. Technically I believe you could go even higher than the 4 GB's listed here. When I got mine I noticed a slight increase in speed but nothing worth really mentioning. Without knowing what you want to achieve can't say how much these will help. Also you didn't mention how much RAM you currently have. If your currently running 1GB per stick, will make a big difference. If you currently have 2 per, not so much. And if you already have 4 per, you won't see any change. But again, you should be able to run even higher than these 4's.
790206
I have 64GB of these in mine... the ramdrive works great and persists after rebooting.
643208
Well..the card is capable but I think your real-world speeds are going to be limited by your motherboard/processor architecture. Bought this controller to replace a SATA I on an old Xeon-based machine that I use for a file server. Had replaced a couple of Seagate drives on my JBOD array with some shiny new WD Blues, and the old SATA I controller couldn't handle the new drives. This one works like a champ. Here's what I get for speed: $ sudo hdparm -I /dev/sdb|grep -i speed * Gen1 signaling speed (1.5Gb/s) * Gen2 signaling speed (3.0Gb/s) * Gen3 signaling speed (6.0Gb/s) $ sudo hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 956 MB in 2.00 seconds = 478.08 MB/sec Timing buffered disk reads: 332 MB in 3.01 seconds = 110.19 MB/sec $ sudo dd if=/dev/zero of=/shared/output.img bs=8k count=256k 262144+0 records in 262144+0 records out 2147483648 bytes (2.1 GB) copied, 38.9774 s, 55.1 MB/s
123836
I think it can take up to four gigs of RAM. Mine only came with one though.