SAS Raid enclosures

[Jarek Zabczynski]

Just picked up a current 12core MacPro...don't need to be a guinea pig on the iTube.

Planning out my new storage options. Atto 680 card seems to be a popular choice.

Not sure what unit to get for it though. Looking in the 8bay 8-16TB area. Likely running RAID5 unless someone can sell me on RAID6, I keep pretty healthy backup habits.

 

[Jarek Zabczynski]

Currently looking at this guy with an Atto r680.

http://www.promax.com/p-1123-promax-fastmax-fx8-24tb.aspx

 

[Matt Stone]

Hi Jarek,

Don't forget about Maxx Digital! We offer an 8 bay with expander or straight mini-sas, and we give RedUsers a discount. Send me an email mattstone@maxxdigital.com and just mention Jared sent you

 

[Alex Rawet]

Not sure if this is available where you are, but we've had great luck with this:

http://www.rentaraid.co.uk/proavio-...od-enclosure-with-2-x-minisas-connectors.html

We're getting about 1200-1400Mb/s read/write speeds off of it in Raid 6 with 8x4TB Deskstar Drives

 

[Paul Provost]

If you want to go low cost I just listed this:
http://www.ebay.com/itm/121151753415?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1586.l2649
been very reliable for me...

 

[Matt Gottshalk]

Another vote for MaxxDigital.

They have been great on support and their SAS raid I bought is solid.

 

[Mike Nagel]

Not sure if this is available where you are, but we've had great luck with this:

http://www.rentaraid.co.uk/proavio-...od-enclosure-with-2-x-minisas-connectors.html

We're getting about 1200-1400Mb/s read/write speeds off of it in Raid 6 with 8x4TB Deskstar Drives

that's 150-175 MB/s... not so fast... They're stating 1000 MB/s in a Raid 5 config...

did u try other Raid configurations on the Rentaraid ?

 

[Alex Rawet]

that's 150-175 MB/s... not so fast... They're stating 1000 MB/s in a Raid 5 config...

did u try other Raid configurations on the Rentaraid ?

We didn't, went straight in at Raid6; not sure what you mean about the 150-175 speed?

 

[Mike Nagel]

We didn't, went straight in at Raid6; not sure what you mean about the 150-175 speed?

Alex,

you posted "1200-1400Mb/s" which refers to Megabit/s, which equals 150-175 MB/s which refers to Megabyte/s... (1 byte = 8 bit)

Did you mean 1200-1400 Megabyte/s (MB/s) ?

if it was Mb/s then these numbers are not impressive, if it was MB/s then that would be blazing fast... ;-)))

one of the images on the product page shows a speed test with an AJA card coming in at 1000 MB/s read and write... now those are manufacturer test number probably in a perfect world scenario...

so feedback from real world users like you is very informative !

Thanks.

- Mike

 

[Shiblon Wixom]

Raid6 is better than raid5 once you start dealing with larger sets of raid drives, like 16 or 96 drive rack mounts, but since space is a concern with 4 and 8 drive raids it's usually better to go with raid5, or even raid0 with SSD raids. From what I understand SSDs suffer excessive wear in raid5/6 configurations.

 

[Blair S. Paulsen]

Whether using SAS or eSATA or even USB3 for I/O, what is the current reality of RAIDing SSDs?

I've been told by people in the storage biz that SSD based RAIDs are still too unreliable.

Does anyone using SSD based RAIDs care to dispute that?

Cheers - #19

 

[Frank Cueto]

www.proavio.com

I have about 128TB of storage from them. about 1500MB/s

 

[Mike Nagel]

www.proavio.com

I have about 128TB of storage from them. about 1500MB/s

those are exactly the ones Alex mentioned that Rentaraid sells in the UK...

Frank, which model(s) do you have ?

Any reliability issues with the Proavio ?

- M

 

[Alex Rawet]

Alex,

you posted "1200-1400Mb/s" which refers to Megabit/s, which equals 150-175 MB/s which refers to Megabyte/s... (1 byte = 8 bit)

Did you mean 1200-1400 Megabyte/s (MB/s) ?

if it was Mb/s then these numbers are not impressive, if it was MB/s then that would be blazing fast... ;-)))

one of the images on the product page shows a speed test with an AJA card coming in at 1000 MB/s read and write... now those are manufacturer test number probably in a perfect world scenario...

so feedback from real world users like you is very informative !

Thanks.

- Mike

I'm mixing my Mb/s and MB/s it seems, I meant Megabyte/s (MB/s), so we're getting excess of what the Aja test from the manufacturer is showing (based on the Aja test run on our side).

We've got a PCI SSD which the Raid keeps pace with, I was expecting the Raid to be quick, but not that fast!

We went with Raid6 over Raid5, just for peace of mind really

 

[Mike Nagel]

I'm mixing my Mb/s and MB/s it seems, I meant Megabyte/s (MB/s), so we're getting excess of what the Aja test from the manufacturer is showing (based on the Aja test run on our side).

We've got a PCI SSD which the Raid keeps pace with, I was expecting the Raid to be quick, but not that fast!

We went with Raid6 over Raid5, just for peace of mind really

yeah, I figured it was a typo ;-)

looking into the Proavio...