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PERC 5/i RAID Card: Tips and Benchmarks - Page 24

post #231 of 7150
Quote:
Originally Posted by ounderfla69 View Post
By cutting pin 5 and 6 you are disabling the sm bus and isnt that related to power management?
doh.... totally forgot about the pin mod. thanks dude.
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post #232 of 7150
Thread Starter 
Quote:
Originally Posted by technodanvan View Post
Lastly, does Vista have the correct drivers already packaged or would it be best to use a thumb drive with them?

Vista already has drivers packaged but they are older ones.
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post #233 of 7150
Quote:
Originally Posted by DuckieHo View Post
Vista already has drivers packaged but they are older ones.
Alright, I'll go ahead and jump on one when I see a decent deal.

Presumably getting the battery backup is also a wise decision.
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post #234 of 7150
Quick question, is the battery back up really worth getting? $50 seems an awful lot for what it is...and anything that I lose in memory can't be that much, right?
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post #235 of 7150
Quote:
Originally Posted by technodanvan View Post
Quick question, is the battery back up really worth getting? $50 seems an awful lot for what it is...and anything that I lose in memory can't be that much, right?
If you want to use write-back cache (which is actually a really big speed increase in everyday use with a dedicated card like this), then yeah you should get it. If not, then it probably won't be utilized at all.
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post #236 of 7150
Well I picked up a Perc5i card with a battery backup on ebay for $117 shipped after 10% coupon. My friend sent me a couple of 3.5in 15k 73GB SAS drives that were pull from a new machine. I was going to dual boot WinXPMCE and Vista home Premium X64 off them.

Question 1)My question how much of an improvement over the regular SATAII drives that I am using now. I am currently using 2 seagate 250GB drives for the OS and my Documents.

Question 2)I currently have 2 750GB Samsung F1 in raid 0 and 2 WD 500GB i raid 1 for backups. My plan is to buy 2 more F1 and go raid 0. I see you can add more drives in a Raid 5 with this card, is it possible to add more drives to a Raid 0 config?

Question 3)The 500GB are drives for back up and I am moving them to an external Port multiplier box. I backup the OS, My Documents and the Images I make. . I do not back up the DVD rips or recorded TV programs or Raw video. I want to add more 750GB drives over time for more space. I will have multiple partition on these drives. Since I have other backup should I go with Raid 5 or Raid 0? I will probably get 4 drives if I choose raid 0 and 5 +1 hot spare. If I choose Raid 5 will I see that much less performance the Raid ?

Thanks
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post #237 of 7150
1) Even with just one 15k RPM drive you will LOVE the speed increase. You will notice it the first time you boot up.

2) I don't know for sure but I doubt it, never seen a card that can expand a RAID0 array.

3) To get a rough estimate of RAID5 speeds - assuming you aren't capping out the card or PCIe bus - is to determine what the RAID0 speed would be with one less hard drive. So if you had 5 hard drives in RAID5, the speed would be roughly equivalent to 4 drives in RAID0. And then writes are usually a bit slower.
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post #238 of 7150
Thanks, maybe I will try raid 5 and start with 3 drive and add more as I go.
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post #239 of 7150
RAID5 is great on the PERC. Manyak is right, 5x raid 5 is just as fast as 4x raid0.

Also, the battery is worth it for write-back cache, but if you download the LSI MegaRAID utility you can enable write-back without the battery. With raid 0, 5, or 6 you might corrupt your volume from a bluescreen, or any other unsafe shutdown though.
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post #240 of 7150
Thread Starter 
Quote:
Originally Posted by xboxor View Post
RAID5 is great on the PERC. Manyak is right, 5x raid 5 is just as fast as 4x raid0.

Also, the battery is worth it for write-back cache, but if you download the LSI MegaRAID utility you can enable write-back without the battery. With raid 0, 5, or 6 you might corrupt your volume from a bluescreen, or any other unsafe shutdown though.
BSoD should not cause data corruption. The card uses onboard RAM to improve performance via caching and buffering. Data corruption occurs if the card loses power before write the data on the RAM to a hard drive. Common causes of system power loss include blackout, PSU failure, or overheating CPU.
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