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10-19-2009, 11:05 AM #1Web Hosting Master
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Adaptec 2405SAS vs 3Ware 9650SE-4LPML for raid 10
Hi,
i want to use q9550 with 8G RAM,
install on X7SBL-LN2,
and use for 500G SATAII to do raid 10,
about Adaptec 2405SAS and 3Ware 9650SE-4LPML,
which one will get better performance ?
thanx
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10-19-2009, 02:32 PM #2Web Hosting Master
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3Ware 9650SE will give you better performance, IMO for this specific application. You can also add a BBU for writecache enabling where as with the 2405 model you can't.
Use the Adaptec 2405 if you want to be able to support SAS later though as the 9650SE is SATA only.EasyDCIM.com - DataCenter Infrastructure Management - HELLO DEDICATED SERVER & COLO PROVIDERS! - Reach Me: chris@easydcim.com
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10-19-2009, 03:54 PM #3Web Hosting Evangelist
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Do you have any information to back that up? My experience has been the exact opposite. The Adaptec 2405 is a beast of a card, and absolutely holds its own against the 9650SE-4LPML. If you're comparing a 9650SE-4LPML w/ BBU against a 2405, that's not an eye-to-eye comparison. You should be comparing an Adaptec 5405 w/ BBU vs 9650 w/ BBU, and the 5405 w/ BBU will smokes the pants off the 3ware alternative....
Adaptec also gives you the flexibility of SAS/SATA in the same card. The only shortfall of the 2405 (I wouldn't even call it that really) is the lack of an available BBU, but can just as easily do a Adaptec 5405 + ABM800 and call it a day.
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10-19-2009, 04:19 PM #4Web Hosting Guru
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I agree, in all my testing and real world use the adaptec 2405 kills the 3ware 9650 performance wise. Yes the 2405 doesn't support a BBU but that's why it doesn't support raid 5 or 6. With raid 1 or 10 even with write caching on there's no risk of data loss. Most likely the array would just need to rebuild when it powers back on.
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10-19-2009, 04:41 PM #5Web Hosting Master
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10-19-2009, 08:18 PM #6Randy
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No critical need for BBU on RAID1/10. Adaptec beats the pants off 3ware in this situation.
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10-19-2009, 09:24 PM #7Web Hosting Master
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BBU will enable writecache,will it not get better performance ?
thanx
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10-19-2009, 10:04 PM #8THE Web Hosting Master
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How about the new LSI cards, like the MegaRAID 9260-4i?
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10-19-2009, 10:14 PM #9Randy
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You can enable write cache without BBU. Like stated previously, BBU is much more critical for RAID5/6.
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10-20-2009, 01:26 AM #10Junior Guru
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10-20-2009, 11:50 AM #11Web Hosting Evangelist
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I have experience with both the 3ware 9650 and Adaptec 2405 and also agree, the Adaptec 2405 smokes pretty much all 3ware I have used in the past (9650, 9550SX, 9500). However, the 2405 does not have BBU option if I recall...
If doing RAID 10 with 4 drives and you do want a BBU option, also check out the LSI 8704ELP. Haven't tried out the 9260-4i yet. But it also looks like a winner in my book.
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10-20-2009, 12:19 PM #12Web Hosting Master
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Could you explain this? I've always used BBU for RAID10. I don't see how a cached write that is lost during power failure would *not* cause problems on RAID1 or RAID5. Sure, a RAID5 may have worse corruption issues but it seems a RAID1 could still have corrupt/missing data due to write cache loss with no BBU.
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10-20-2009, 02:30 PM #13Web Hosting Master
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10-20-2009, 02:46 PM #14Web Hosting Master
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in the real world, it seems that the "importance" of BBU is way, way over-stated.
over years, we must had installed thousands of hardware RAID cards without BBU (but with write cache enabled) in production servers, and I can't recall one single case of data loss caused by absence of BBU reported by customers after this many years!
was it me, I wouldn't loss any sleep a bit if no BBU is installed on my own server.
2405 ==> 800mhz Intel dual-core RAID processor, PCI-E 8-lane, SAS or SATA-II
9650SE ==> 600mhz single-core RAID processor, PCI-E 4-lane, SATA-II only
adaptec 2405, hands down! but I do have some clients insisting on using 3ware because of CLI utilities.
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10-20-2009, 02:53 PM #15Web Hosting Master
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To be honest I find the Adaptec CLI utilities (Storman) just as good as 3ware. It does take a little longer to grasp, but on the latest firmware it's excellent. It's also great being able to flash the hdd activity led on a particular drive to make it easier to swap out failed disks.
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10-20-2009, 03:26 PM #16Web Hosting Guru
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I think adaptec and 3ware cli utilities are pretty equal. 3ware does have one advantage though, the 3dm2 web interface is miles ahead of the garbage java based app adaptec provides.
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10-20-2009, 10:46 PM #17Web Hosting Master
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I'm another Adapted 2405 "fan". I use this in all our server setups now, no issues.
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