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Western Digital WD Black WD2002FAEX 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5
  • Owned For: more than 1 year

Pros: Very fast for its capacity; in the 2TB size it's very hard to get something that will beat it in raw I/O performance in the real world. Synthetic benchmarks don't tell the whole story, but real-world I/O numbers do and this drive is a winner. Higher capacity = higher areal density (usually) = faster I/O, all other things equal -- the 3tb 7200RPM drives are faster, but they have a density advantage.

Cons: Heat! Use with good airflow. These units run hotter than some of their competitors and if not properly cooled you'll have reliability problems. Nothing is free.

Other Thoughts: The 2TB class is more-or-less passe these days, but if you need storage in this class these are a good choice for RAID arrays and similar. I get an honest 100MB/s of sustained transfer rate off these in real-world (not synthetic benchmark) use which is a solid 30% better or so than the Hitachi 7200rpm drives return of the same capacity. I have had some failures but WD is good about warranty replacements and as noted then run hot so use them in a cabinet with proper airflow.

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LSI Internal SATA/SAS 9211-8i 6Gb/s PCI-Express 2.0 RAID Controller Card, Single
  • Verified Owner
  • Owned For: 1 month to 1 year

Pros: There is really not a lot to say about this card, other than (1) it works, (2) it's stable and (3) it's fast. You're going to be limited by your OS and the drives themselves, and there's no fancy cache memory to cheat with, but if you're running ZFS or similar on a NAS box you don't want those things. It's also inexpensive, which is a big bonus.

Cons: It's NOT for those who want on-board RAID or battery-backed cache. If that's your thing then buy an ARECA card, stuff it full of memory and add the battery unit to it.

For host-software-based disk storage (e.g. ZFS file stores on a Unix box), however, this is the cat's meow.

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areca ARC-6120-3 Controller Card Backup Battery
  • Owned For: more than 1 year

3 out of 5 eggs A Must-Add, BUT... 03/03/2013

This review is from: areca ARC-6120-3 Controller Card Backup Battery

Pros: Without this card you're only getting half of what your ARECA adapter can provide in terms of performance -- if that. This unit is not optional if you actually want the performance you paid for. While you CAN force writeback caching on the adapter without this installed, DON'T -- if the power goes off you will get silent data corruption. Therefore this is a must-have accessory.

Cons: It's utterly scandalous that there's no $20 (or even $40) battery-only replacement option, given that the battery is a plug-in. C'mon guys, over $100 for a replacement $5 lithium battery? I think not. But never fear, provided you can find a replacement with the requisite three wires (including sense), it fits, and you can solder it's replaceable. I've done it and it works. Yeah, perhaps "not recommended", but anyone who thinks I'm forking up over $100 for a $5 battery has rocks in their head. Change 'em out every couple of years so you know the capacity is good.

Other Thoughts: There's just no argument available for NOT buying one of these if you have an Areca adapter. The performance differences on writes are immense and there is no way around this purchase if you actually want the adapter to provide the performance you paid for. This really ought not be an optional accessory, but it is what it is.

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Karl D.'s Profile

Display Name: Karl D.

Date Joined: 12/19/04

  • Reviews: 18
  • Helpfulness: 12
  • First Review: 07/06/08
  • Last Review: 09/16/13
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