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post #3021 of 7276
Wow I have a lot of reading to do. I just got a Perc5i with 2 OCZ 30gb solid state drives.
there is 3020 posts in this thread...... if I have any questions after I read this thread I will be sure to ask.
    
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post #3022 of 7276
Quote:
Originally Posted by Russtynailz View Post
Wow I have a lot of reading to do. I just got a Perc5i with 2 OCZ 30gb solid state drives.
there is 3020 posts in this thread...... if I have any questions after I read this thread I will be sure to ask.
Honestly, this thread is too long to be useful trying to read all of it. Fortunately, the OP has summarized most of the relevant info in the first post. Or, use the search feature.
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post #3023 of 7276
Quote:
Originally Posted by supermiguel View Post
I know SAS 5/iR will only support raid 0 and 1. And the PERC 5/i will support 0, 1, 5, 10, 50. Also i know that the PERC uses a Intel IOP333 on-board processor where the SAS uses a Integrated ARM processor. Also the PERC is a x16 pci-e, and the sas is a x8. The PERC has 256MB of cache the SAS doesnt have cache memory. but If i want to use raid 0... Is there going to be a big speed difference between the 2?
The Perc 5/i is a x8 pci-e, not a x16. The IOP333 is used for the XOR computing necessary to the RAID5. For a simple RAID0, the Perc 5/iR is sufficient. Probably the missing cache will cause a small drop in write performance, but I think that it will be almost negligible.
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post #3024 of 7276
hi,
i have perc5i with 4 drives in raid5 and 3 virtual drive .
i bought one more drive to expand the raid .
i added the drive to the perc5i and i see the drive in physical drive but i have not option to add this drive in "MegaRAID Storage Manager"
what the problem ? why i can not add the drive to my raid5 ?
http://i32.tinypic.com/omg7t.jpg
http://i32.tinypic.com/nqa3ap.jpg
post #3025 of 7276
i guess i have 3 options... I have 3 drives 500GB 7200RPM... i run debian

1. Buy a perc5i card for about $120 from ebay.. and do a raid 0 on those 3 drivers
2. Use my integrated controller (AMD SB750) and use enable md-raid
3. Use md-raid, make a 100mb partition to install /boot, and do a raid 0 on the other partitions..

I guess #1 will give me the best speed but is it worth it???
post #3026 of 7276
i flashed my card with the sas1068_fw_image.rom , the bios still says dell perc 5i - does this mean I now have an LSI? or still a dell?

also, getting a "cannot find enough free resources that it can use" error on pci express to pci bridge B (where the perc 5i is) on my evga 750ftw. how do i fix this?
post #3027 of 7276
Quote:
Originally Posted by Russtynailz View Post
Wow I have a lot of reading to do. I just got a Perc5i with 2 OCZ 30gb solid state drives.
there is 3020 posts in this thread...... if I have any questions after I read this thread I will be sure to ask.
Hate to be the bearer of bad news, but if you only want to use the PERC with your 2 SSDs in RAID0, you would probably be better using the onboard ICH10R controller. It will be just as fast, and would have saved you $100.

The PERC5 is really best suited to those with crappy NVidia RAID controllers (which are poor read performers) or for those wanting to run a RAID5 storage array.

EDIT: actually, which model of SSD do you have? If they are the old, non-cached (JMicron controller) versions, the PERC will (should) remove the stuttering issue. So if this is the case, it will be worthwhile...
Edited by the_beast - 8/11/09 at 2:11am
post #3028 of 7276
Quote:
Originally Posted by supermiguel View Post
i guess i have 3 options... I have 3 drives 500GB 7200RPM... i run debian

1. Buy a perc5i card for about $120 from ebay.. and do a raid 0 on those 3 drivers
2. Use my integrated controller (AMD SB750) and use enable md-raid
3. Use md-raid, make a 100mb partition to install /boot, and do a raid 0 on the other partitions..

I guess #1 will give me the best speed but is it worth it???
You will get pretty much identical performance from the PERC and your onboard mobo ports if you use Linux software RAID0. The software option may even be faster as Linux has great caching options using system RAM. NVidia onboard controllers are pretty crappy for RAID performance but they are fine when using single disks (as is the case when using software RAID).

If you want/need RAID5, get the PERC. If not, stick with Linux.
post #3029 of 7276
Quote:
Originally Posted by the_beast View Post
You will get pretty much identical performance from the PERC and your onboard mobo ports if you use Linux software RAID0. The software option may even be faster as Linux has great caching options using system RAM. NVidia onboard controllers are pretty crappy for RAID performance but they are fine when using single disks (as is the case when using software RAID).

If you want/need RAID5, get the PERC. If not, stick with Linux.
speed wise, will the speed of a raid 5 using the perc, be the same as using raid 0 using linux software raid?
post #3030 of 7276
can you use the perc 5/i with FreeNas? if so, how to do it?
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