Ricardo Reyes
Forum Replies Created
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That would be a nice xmas present for everyone…sorry to disappoint. The Areca TB2 8bay is said to be available February 2014, around the same time when Apple starts shipping out the new Mac Pro backorders. =) Keeping my fingers crossed.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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We’re seeing 800MB/s with 10Gb/s TB1 righ now, so I expect about 1280MB/s with 20Gb/s TB2.
So even with SSD’s you’ll still be limited.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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From Cnet review:
“When I tested the original Pegasus R6, it was by far th fastest external storage device. Now the Pegasus2 R8 has almost double the speed”So the Pegasus R6 was doing about 180MB/s? Come on, something has to be wrong with the way there testing. I hope….
Promise lists the Pegasus2 R8 is using desktop 4TB 5900RPM drives, but still don’t expect it to be that slow. Slow, but not that slow.
Would I trust desktop drives to store 32TB of storage in a RAID environment? No way! But that’s another story.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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Alex, Let me clear up a few things.
The ARC-4036ML is a non-expander JBOD Enclosure and requires an ARC-1223-8X RAID Controller. Supports only 8 drive max per controller.
The ARC-4036 is the expander version which requires an ARC-1882X RAID Controler that supports SAS Expansion and allows you to support more than 8 drives by daisy chaining additional ARC-4036 JBOD expander units.
The ARC-8040 has the RAID controller built in and requires just a SAS host card like the ARC-1320-8X. The ARC-8040 also supports SAS expansion allowing it to work with ARC-4036 and daisy-chain addtional storage to fit your needs.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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Either option you listed will get you going. I would lean toward a Thunderbolt solution, it also looks more cost efficient in the end. But instead of a Thunderbolt PCIe expansion chassis for your KONA LHi card. The IoXT might be something to consider instead. That is unless you have legacy video devices that need to capture analog audio or video, then the expansion chassis will be your only choice.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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That’s correct. The 8 bay is another story. Most likely why Promise introduced the R8 with TB2. I can’t say what speeds you would get with the new Pegasus R8. But we’ve been testing another 8 bay Thunderbolt 2 storage and have seen 1200-1400MB/s speeds in RAID 5. Who would have thought 1200MB/s transfer rates on a rMacbook Pro. =)
However, current 8 bay Thunderbolt 1 storage is more than enough for most users at 700-800MB/s.
As far as daisy chaining 4 or 6 bay units to increase performance, you would run into the same limitation since you can’t span arrays across controllers. (unless in a software RAID environment, but not recomended) So you would be running 2 separate 4 drive RAID arrays.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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4 drive RAID arrays will not benefit from Thunderbolt 2, you would be getting the same performance. That is because most single 6G SATA hard drives average data speed is 150-180MB/s and up to 200MB/s on the higher end drives. Let’s say 4 drives gives you a theoretical total max transfer rate of 800MB/s, but would likely see somewhere between 400-600MBs in RAID 5 configs depending on the RAID controller used. Although Thunderbolt 2 provides enough bandwith, you’re limted by the drive speed.
But hey, anyone with a Pegasus2 R4 please feel free to post some benchmark test! I on the other hand would be more interested in seeing the TB2 R8 performace.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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Nope, they are correct. We start seeing faster read performance with more drives.
For example, the same test using 8x Hitachi Ultrastar drives in RAID 5 show the following.
Read – 710MB/s
Write – 855MB/sRicardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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Hello John,
Yes, the ARC-1320-8x card would be perfect solution for Non-RAID configurations.
I’m a bit confused at which card you are using? Are you using the Newertech card or the Areca card? If you’re having trouble with the Areca ARC-1320-8x, then please contact our support team @714-961-0800 x112 so they can get this resolved for you.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****
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I’ll add that the Hitachi also have a higher MTBF, there rated at 2 Million hours vs the WD RE which is 1.4 Million hours. I’ve worked with both drives on a daily basis and either one would do great in a RAID environment.
Ricardo Reyes
Areca Technologies – US Channel
Ricardo@ArecaUS.com
http://www.Areca.com.tw***** RAID is not a substitute for proper and regular backups *****