Recommendations for reliable PCIe eSATA HBAs on Lion

Hi folks; we're looking for a realiable professional-level (support) eSATA 3G or 6G PCIe HBA for Mac Pros running Lion that supports port multiplication.
Currently we have two Mac Pro edit suites. One uses a Sonnet Technologies E2P which is reliable, but very slow on port-multiplied enclosures. The other uses a Sonnet Technologuies E4P which is shocking faster than it's 2-port counterpart but the drivers have been causing consistent kernel panics on Lion and Sonnet seems unable to do anything about it. Annectodal online research shows the E4P is causing issues for many other users on Lion.
Ultimately, the card has proved too unreliable to continue working with - at this point it's just costing more money to deal with than to replace.
One of the Mac Pros (the one with the unreliable E4P) also has an ATTO R680 SAS RAID adapter which works faultlessly but we're looking for eSATA recommendations as many drives that are brought into our suites are eSATA/USB/FW combos.
Thanks for your time!

Lots of good compatible enclosures
http://www.macsales.com/firewire
- they may even have 2.5" drives
I keep a couple spare drives that I can pop internally, with some extra Apple type drive sleds.
Hook up the ODD ports and run NewerTech kit which are bootable. I keep my TimeMachine drive hooked up to one of those ports and have a small 50GB OS X partition on it so the drive does double duty.
When you get a DVD, make a copy and only use the copy, never the original disk.

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Welcome to the forum,
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PCIe eSATA controller and drive case

Can someone recommend the best external backup to purchase? I don't quite understand the difference between a regular external hard drive, like something that WD makes, versus an PCIe eSATA controller and drive case. What is all of that? Do I really need such a thing, and is it better?
Thanks.

Can someone recommend the best external backup to purchase? I don't quite understand the difference between a regular external hard drive, like something that WD makes, versus an PCIe eSATA controller and drive case. What is all of that? Do I really need such a thing, and is it better?
Dear kpdesigns,
No one knows what you need or want but you. I can provide some ideas of various external storage options that are available for the Mac Pro. The various storage protocols differ in performance, expansion and reliability characteristics.
1. USB - external USB drives are cheap and readily available. They work good for backing up small amounts of data (10-50GB). The performance of a USB drive on a Mac Pro is limited to approximately 17-18MB/sec. This translates into long backup periods when trying to copy 100GB of data to a USB device. FireWire 400, 800 and eSATA enclosures are all faster.
2. FireWire 400 - external FW400 drives are little more expensive than USB 2.0 enclosures but they provide approximately 32-38MB/sec transfer rates which is almost twice as fast as USB 2.0 on a Mac Pro. FW400 provides adequate speed for most backup situations where less than 100GB of data is in play.
3. FireWire 800 - external FW800 drives can provide 52-60MB/sec. transfer speeds. This method works well as a backup drive for a Mac Pro as the FW800 ports are built in. It also works well as a boot drive if necessary. However, when using more than one FW800 drive, speeds can be lower and many users end up resorting to PCIe expansion cards when adding more than three FW800 drives. FW800 does not provide the RAID performance that external SATA solutions can provide.
4. eSATA - external SATA hard drives can provide 57-70MB/sec. This is the fastest method for adding external storage to a Mac Pro. In addition to the Mac Pro SATA 4-bay tray system, there are also two more SATA ports on the Mac Pro motherboard (just under the front fan assembly). These ports are marked as "ODD SATA" on the motherboard. Users can install SATA cables on these ports and run them out of the back of the Mac Pro to SATA->eSATA converters like the Addonics model AASA2SAP15C. OWC also sells a kit that accomplishes this.
Ecternal 2-Port PCIe Cards
The next level of external SATA on the Mac Pro is a two port card that utilizes the SiI-3132 chip. These PCIe cards provide great individual and dual SATA hard drive performance but are limited to approx. 125MB/sec when used with a SATA PM multi-drive setup in a RAID configuration. Examples of cards in this category include:
Addonics PCIe 2-Port model ADSA3GPX1-2EM ($39.99)
http://www.amug.org/amug-web/html/amug/reviews/articles/addonics/adsa3gpx1-2em/
FirmTek SeriTek/2SE2-E ($99.95)
http://www.amug.org/amug-web/html/amug/reviews/articles/firmtek/2se2e/
External 4-Port PCIe eSATA Cards
The next step up of SATA controllers for the Mac Pro includes 4-port external eSATA cards that provide very good RAID performance and support port multiplier (SATA PM) and direct connect enclosures. These cards can support up to 20 hard drives using 4 SATA PM 5-bay enclosures and can provide 200-700MB/sec performance in RAID 0 configurations with 5-20 hard drives. Examples of Mac Pro host adapters that fall into this category include:
Addonics ADSA3GPX8-4EM ($199)
http://www.amug.org/amug-web/html/amug/reviews/articles/addonics/adsa3gpx8-4em/
DAT Optic eSATA_PCIe8 ($189)
http://www.amug.org/amug-web/html/amug/reviews/articles/datoptic/pcie8/
NORCO-4629 ($189.99)
http://www.amug.org/amug-web/html/amug/reviews/articles/norco/4629/
RocketRAID 2314 ($200)
http://www.amug.org/amug-web/html/amug/reviews/articles/highpoint/2314/
Sonnet Tempo E4P ($299
http://www.amug.org/amug-web/html/amug/reviews/articles/sonnet/mac-pro/
SATA PCIe RAID Controllers
The next step up for Mac Pro SATA host adapters is high performance RAID 5 and RAID 6 controllers that provide redundancy. Performance for this group using 8 drives in a RAID 5 configuration is 420MB/sec on average. Using RAID 6 performance is 350-380MB/sec on average. Mac Pro host adapters that fall into this category include:
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HighPoint RocketRAID 2322 RAID 5 Controller ($299)
http://www.amug.org/amug-web/html/amug/reviews/articles/enhance/e8/
Areca ARC-1221x RAID 6 SATA Controller ($680)
http://www.amug.org/amug-web/html/amug/reviews/articles/areca/1221x/
RAID 6 SAS Controllers
The next upgrade for external Mac Pro SATA/SAS hard drive users is the new SAS RAID 6 controllers. These cards provide 8-12 ports that work with either SATA hard drives or SAS drives. They also have the capability to support up to 128 devices using SAS Expanders. This new category of external storage provides almost unlimited expansion capability with a single Mac Pro PCIe host adapter. An example of this category is the bootable Areca ARC-1680x SAS RAID 6 SATA Controller ($845). AMUG is currently reviewing this card and the review should be available soon.
As you can see the Mac Pro supports a wide range of external storage options. Users simply need to decide how much storage they need and what performance level they desire. Typically, as the volume of data being maniplulated grows higher the need for higher performance also grows higher. Users working with uncompressed HD video will find large high performance RAID systems provide a great platform for video editing.
Have fun!

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Juan Z wrote:
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