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Item#: N82E16816103232

Adaptec RAID 6805E 2270900-R 6Gb/s SATA/SAS 4 internal ports w/ 128MB cache memory Controller Card, Single

  • RAID 0/1/10/1E/JBOD
  • 2 x SFF-8087 mini-SAS Internal Connectors
  • Up to 6Gb/s

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Adaptec Series 6E Unified Serial SATA/SAS RAID controllers deliver the robustness of hardware RAID and the Adaptec RAID Code, enterprise class management features, and full OS support -- including open source drivers for Linux and FreeBSD -- into the entry level RAID space. Delivering the same 6Gb/s performance of the Series 6 controllers, the Series 6E are optimized for the platform where a Series 6 controller would not fit in from a price, form factor or host connectivity standpoint.

Series 6E controllers support SATA and SAS devices, and have been qualified with the same systems, motherboards, backplanes and drives as Series 6 controller. They include the same drivers, BIOS and storage management tools as Series 6 controllers and do not require additional training or qualification. Series 6E controllers are thoroughly tested with entry-level storage devices for desktop use and entry-level server platform, workstation and motherboards most typically used for basic server, performance workstation and industrial PCs.

  • newegg I/O Connectivity and Data Protection With its entry-level price point, Adaptec 6805E can be used as a connectivity product, with support for up to 8 SATA and SAS devices, and 128MB of DDR2-800 MHz DRAM cache for device acceleration. At the same time, the Adaptec RAID Code (ARC) delivers maximum reliability with RAID levels 0, 1, 1E, 10 and JBOD. ARC also offers RAID Level Migration (the ability to easily migrate RAID levels), Online Capacity Expansion (expand capacity without powering down the server), and Copyback Hot Spare (when a failed drive has been replaced, data is automatically copied from the hot spare back to the restored drive).
  • newegg Hybrid RAID With Hybrid RAID 1 and 10 the Series 6E controllers offer maximum performance and reliability by combining Solid State Drives (SSDs) and Hard Disk Drives in a single array. By performing read operations from the fastest SSD and write operations on both the SSDs and HDDs it offers tremendous performance gains over standard HDD RAID arrays. By combining SSDs and HDDs it offers the benefits of both technologies and allows a better cost per GB ratio than comparable SSD only arrays.
  • newegg The Case for Cache The fastest way for a RAID controller to fulfill a read or write request is to serve data out of its cache. Savvy network administrator knows that enabling the RAID controller cache offers significant performance benefits, such as reduced latency in I/O request, bandwidth and queue depths that surpass software application limits, and on-the-fly parity calculations on sequential writes.
  • newegg Intelligent Power Management Intelligent Power Management (IPM) slashed power and cooling costs by up to 70% using intelligent I/O caching combined with disk drive power savings via standby and power-off modes.

Learn more about the Adaptec 2270900-R

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 0 day
  • Read full details

Customer Reviews of the Adaptec 2270900-R

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  • Dale C.
  • 6/29/2013 4:32:09 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs[UPDATE] Adaptec Cards Incompatible with UEFI

Pros: Solid, reliable performance
Inexpensive for a RAID card

Cons: Runs a little hot.... make sure cooling airflow is adequate

Other Thoughts: I just realized going back over last years orders that I had written an incomplete review on this product.

Installation Success & good card...
I had mentioned that the Adaptec cards don't support UEFI. After writing that review I decided to try it anyway. The card installed without a problem in my ASUS Z9PE-D8 WS is a UEFI board! I think it was because ASUS supplied both a UEFI and a legacy Bios for my motherboard. In any case, I was able with the Adaptec utility to easily setup a RAID 10 using five 2GB HDDs (one is designated as a global hot spare). The RAID performance has been snappy and trouble free ever since.

I had wanted to upgrade the card later with the Flash Module 600; and found out to my disappointment after purchase that the among the 600 series cards supported, the 6805E just isn't on the list. That was my oversight as it is prominent on the FM600 datasheet. I have to say that even tho some of the product information hasn't been quite as easy to find or as forthcoming as I'd have liked, I am very happy with this controller.

Great "Adaptec by PMC Technical Support" ("ASK US")...
After getting everything installed and having it running without issue for 8 mos., it occurred to me how long overdue it was to employ the Adaptec Storage Manager (ASM) utility to monitor the card and see if there was some maintenance I needed to perform (or some settings that might need to be adjusted). I found that the utility wasn't even seeing my controller! I contacted support thru "ASK US" and they were very responsive and helpful. They suspected that I had inadvertently allowed Windows 7 to supply the driver for the card during install; explaining that unless I installed the proper Adaptec driver, the utility wouldn't work. They calmed my fears about screwing up the RAID setup with such a driver switch. I did the driver switch without hitch and updated the ASM while I was at it (both easy downloads from the support area). That did the trick. ASM now was able to see and monitor my RAID setup.

Since the card had come with a warning stating that it needed to have good cooling flow, I thought I might check to see if the ASM could query and report that. Indeed it can - in addition to some SMART info on the drives. For my controller card it reported a temp of 72C/161F (note that I have a 200mm case fan on my case door blowing directly on it from 7 inches away and my ambient temps are about 25C/77F). I contacted support again and asked if my results are normal. They replied that the user logs they typically see average around 80C. So I was relieved - my cooling was as effective as I'd hoped. They further explained that ASM will issue a high temp warning at around 90C in most cases, and that the controller has a "die temp" of 100C to105C (at which point it is designed to automatically shut down until it cools off). This card runs pretty hot. Anyway, I was impressed with their thoroughness and willingness to answer all of my questions.

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  • Dale C.
  • 7/29/2012 12:17:26 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsAdaptec Cards Incompatible with UEFI

Pros: Decent card, decently priced.

Cons: During install of this card I went on the Adaptect website. There I happened to see an "Answers" area where someone had asked if any Adaptec RAID cards support UEFI. It caught my attention because my ASUS Z9PE-D8 WS is a UEFI board. Sadly, the response was that all of their cards only work with motherboards that can boot under the traditional BIOS. So it looks like I'll have to return the card.

Other Thoughts: It is quite irritating that they aren't more forthcoming about this, because it costs time and money... not only to RMA the card, but to revisit the research to find a suitable replacement at this price point. And not to mention, more and more mobos are migrating to UEFI.

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  • David F.
  • 11/16/2011 10:02:33 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSuperb for RAID 10

Pros: I am using this card for a single RAID 10 array with six 500GB WD RE drives. Everest reports 125-377MB/sec transfer rates with a random read of 236MB/sec. Processor utilization is no greater than that of a single drive.

I am booting from the array as well as using for storage. Installing Windows 7 on it was completely trouble-free. The BIOS interface is full featured and the Adaptec Storage Manager even more so. Managing single drives, arrays, and copyback hot-spares is very straightforward.

Cons: Be warned--the 6805E does not have drivers for Microsoft XP. Server 2003 is the oldest MS OS that it supports. This is no issue for me but may be for some.

I do not use SSD's, but judging from other reviews the hybrid RAID isn't entirely satisfactory.

You can also forget fast booting if you have a hardware RAID card. The card has to boot its firmware and detect the drives, which takes about a minute (I haven't timed it).

Other Thoughts: I have used RAID for years but this is my first hardware RAID card. I am extremely pleased with it. It runs at PCIe 2.0 speeds in the second video slot on my X38 motherboard. I could not get it to boot from this slot until I upgraded my video card, though. Originally I had to use a x4 PCIe 1.0 slot. (1GB/sec was plenty for my array). Some motherboards or video cards may be incompatible with a 6805E in the secondary video slot.

The cache does not support battery backup, but I suspect this is not really a problem for most single user systems. I assume anyone looking at this card already has a UPS and is unlikely to obsess over what might have been in the cache if the PSU blows up.

Cables are not included in the "single" package. I bought Adaptec cables separately because the price was good and the combo version was out of stock. If you need SFF-8087 SATA cables, the kit version is the best deal.

1 out of 1 people found this review helpful. Did you? Yes No

  • Anonymous
  • 9/7/2011 12:40:15 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsDo not buy for the Hybrid RAID feature or the 128MB cache memory

Pros: None that I experienced, but the 6805E is probably excellent at driving a large array where all disks are mechanical HDDs.

Cons: (1) Onboard cache memory has too much latency for use with SSDs, capping IOPS at roughly 6k to 10k. I bought the 6805E expecting the PCI-e x4 connection and cache to deliver better IOPS than just connecting my Crucial C300 directly to the MB. Not so. The best the 6805E can do is to equal a direct MB connection (Biostar z68A+) and only then by disabling both the read and write cache. Read cache enabled reduces random 4k reads at q32 from 175 MBs to 25 MBs. Write cache enabled reduces random 4k writes at q32 from 65 MBs to 53 MBs.

(2) No Adaptec supported forum, unlike the better SSD manufactures. This is crucial (no pun intended) if Adaptec wants to attract sales from enthusiasts.

(3) Despite the price, the 6805E does not come with any free technical support by telephone. You email your questions to Adaptec. Sometimes they get back to you the same day; sometimes not for two business days. Worse, support is mostly useless. You now know more about cache settings than the

Other Thoughts: The real disappointment comes when you benchmark Hybrid RAID 1. Adaptec's algorithm takes all reads from the SSD but splits writes 50%-50% to the SSD and HDD. Read speeds and sequential writes are roughly equal to the SSD alone, which is good, but 4k random writes at q32 plummet from 65 MBs to 1.29 MBs. The write cache setting has no effect on this metric.

I bought the 6805E on the basis of Adaptec's specs for the purpose of setting up a Hybrid RAID 10 with two Crucial SSDs and two WD Caviar Blacks. Hybrid RAID 10 is just a RAID 0 of two Hybrid RAID 1 arrays. Where's the point in that, when each RAID 1 array only delivers 4k random writes of 1.29 MBs?

The above is dispassionate fact; now my opinion: If Adaptec is serious about this product, it needs to (1) rework the onboard cache to deliver a measurable performance increase with SSDs while enabled; (2) rework the Hybrid RAID algorithm to send all random writes to the SSD in the first instance; & (3) set up an enthusiast fo

1 out of 2 people found this review helpful. Did you? Yes No

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Item#: N82E16816103232
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