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PERC 5/i RAID Card: Tips and Benchmarks - Page 619

post #6181 of 7150
Caution should be used on 2Tb drives up higher on the PERC controllers. There was a LSI bulitin about using high capacity drives (link in this thread somewhere), however they report that the card in some cases struggle or fail to rebuild the array from a failed disc (if going for redundancy).

What I cant remember if the issues appear *AT* 2Tb, or larger than 2Tb.

For my system I prefer to not push my luck and maxed out my drives at 1.5Tb each on my PERC6. The servers at work are 1Tb or less so no other experiance on this.
post #6182 of 7150
Quote:
Originally Posted by SplanK View Post

Caution should be used on 2Tb drives up higher on the PERC controllers. There was a LSI bulitin about using high capacity drives (link in this thread somewhere), however they report that the card in some cases struggle or fail to rebuild the array from a failed disc (if going for redundancy).
What I cant remember if the issues appear *AT* 2Tb, or larger than 2Tb.
For my system I prefer to not push my luck and maxed out my drives at 1.5Tb each on my PERC6. The servers at work are 1Tb or less so no other experiance on this.

Hmm, yea this is important for me to find out. I already have the 2TB drives and I need them that large so I need a controller that can handle them without issues. Redundancy my main concern for going with a RAID array in the first place.
post #6183 of 7150
Yep, just a snip from Dell to backup my caution on using >2TB drives

http://en.community.dell.com/techcenter/extras/w/wiki/2837.aspx
Quote:
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 this support and in some cases, even though you may be able to see the drive, this has NOT been tested or validated, so possible data loss could be experienced. ONLY use the Dell H700 and H800 with the proper firmware to ensure a tested and validated >2TB solution! For non-Dell controllers, contact the controller vendor for their support statement on >2TB drives.

Hard drive controllers, such as the Dell PERC and SAS controllers, have firmware that needs to provide support for >2TB drives. Dell supports these large hard drives on the Dell PERC H700 and H800 and soon, the H200 controller at a later date. In addition, firmware support is also specific to the type of drive – SAS or SATA. Dell H700/800 and H200(at a later date) will only support SAS drives.

http://en.community.dell.com/support-forums/servers/f/906/p/19466142/20182859.aspx#20182859
Quote:
Hello bambi81

The largest 2.5" HDD validated for the 2950 is 500GB(K831N). Larger drive sizes may work, but it will be trial and error. We do not typically go back and validate new components for servers we have stopped selling.

You will either have to test the drives yourself for functionality or find someone that has already verified them to work. The PERC 6 is limited to a maximum of 2TB HDD's, so I wouldn't bother trying drives larger than that.

Thanks
post #6184 of 7150
Infact, I found a few where people have tried to use 3Tb drives and the PERC6 just reports 2Tb.

Best thing to do if its a 2Tb drive, get it setup with some test data, pull the drive (I suggest whilst its powered off!), boot up the system to confirm RAID fail state. Format the pulled disc and pop it in and rebuild the array. If it works then I would be happy myself to trust it with those discs.
post #6185 of 7150
Quote:
Originally Posted by SplanK View Post

Infact, I found a few where people have tried to use 3Tb drives and the PERC6 just reports 2Tb.
Best thing to do if its a 2Tb drive, get it setup with some test data, pull the drive (I suggest whilst its powered off!), boot up the system to confirm RAID fail state. Format the pulled disc and pop it in and rebuild the array. If it works then I would be happy myself to trust it with those discs.

Sounds like a plan. Thanks for the advice thumb.gif.
post #6186 of 7150
http://www.ebay.com/itm/Dell-SAS-SATA-Controller-Card-Cable-4-Drop-RAID-PERC-P322X-M135R-CH328-JN331-/200858794945?pt=US_Drive_Cables_dapters&hash=item2ec41dfbc1

Is this the cable I'd need to go with a Perc 6i card? If so is that all I'd need? Do the drives get powered through the that one cable?
post #6187 of 7150
That looks like the correct one to me. You'll need 4 SATA power connectors to power your drives.

From what I recall, 2 TB is the largest size you can use reliably with PERC 6 controllers. Larger would typically mean the next size up, in other words 3 TB
post #6188 of 7150
I apologize if this has been answered, but after searching I couldn't find an answer: Where is the battery supposed to go on the card? It looks like it has clips on the battery holder. I just zip tied it to the case, but I wasn't sure if it was actually supposed to clip on to something or not. This is for a 5/i btw.
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post #6189 of 7150
Quote:
Originally Posted by wtomlinson View Post

I apologize if this has been answered, but after searching I couldn't find an answer: Where is the battery supposed to go on the card? It looks like it has clips on the battery holder. I just zip tied it to the case, but I wasn't sure if it was actually supposed to clip on to something or not. This is for a 5/i btw.

The battery on a 5i/6i does not mount on the actual card. It normally resides in a dedicated slot in the Servers case. I personally use velcro and velcro it to my case/psu depending on space.

Battery Info if you need a new one:
DFJRV is the Service Kit.
NU209 is the Battery Itself.
post #6190 of 7150
Quote:
Originally Posted by kyle5281 View Post

The battery on a 5i/6i does not mount on the actual card. It normally resides in a dedicated slot in the Servers case. I personally use velcro and velcro it to my case/psu depending on space.
Battery Info if you need a new one:
DFJRV is the Service Kit.
NU209 is the Battery Itself.

Thanks. Now I don't feel as dumb. I figured it was something that would have a spot in its native environment. +rep
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