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тАО09-25-2008 03:11 PM
тАО09-25-2008 03:11 PM
I have seen there is 1TB FATA disks, and this seems to be the best growth for the cost.
We currently have an eva8000 with 8 enclosures. They have the 146GB FC 15k disks in it currently. We are also soon to add an iSCSI connectivity option to it.
We are wanting to have 100 clients use iSCSI to get image files from the EVA over a GB network. About 30 clients will concurrently access the array to pull files ranging from 600MB to 5GB.
What upgrades or options should I look at?
Should we upgrade the controllers of the eva to 8100s? Should we upgrade to 4GB connectivity? More cache?
For the initial investment, what does it take (what do I need to purchase) to be able to add the FATA disks to my current environment? What enclosures, connectivity options, etc? Also is there a limit on how many FATA disks I can add? Can they co-exist with the FC disks?
Solved! Go to Solution.
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тАО09-25-2008 09:23 PM
тАО09-25-2008 09:23 PM
Solutionhere are the docs which could help you:
EVA 4/6/8k iSCSI connectivity guide
http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01519273/c01519273.pdf
EVA 4/6/8k Hardware config guide
http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01364500/c01364500.pdf
EVA 4/6/8k User guide
http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01492137/c01492137.pdf
here the FATA disks notes starts on page 39
and there is a following link:
http://h71028.www7.hp.com/ERC/downloads/5982-7353EN.pdf
FATA/SATA/PATA/FC disks comparison and notes
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тАО09-26-2008 05:40 AM
тАО09-26-2008 05:40 AM
Re: Getting the most total space out of an eva8000
Simply put, you can add FATA disks now to your EVA 8000. You do not need any more hardware than you already have, except of course if you do not have any available disk slots on your existing 8 shelves.
FC disks can co-exist with FATA disk in the same array, but NOT in the same disk group.
Whether or not you need to upgrade the EVA to an 8100 is best left to a Storage Assessment. Without knowing exactly what your storage is doing currently, there really is no way for someone to say "yes" you should upgrade or "no" it's not needed. (Unless you are talking to a sales person).
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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тАО09-29-2008 07:53 AM
тАО09-29-2008 07:53 AM
Re: Getting the most total space out of an eva8000
The 146 GB FC 15k disks you currently have are the highest performance and reliability.
As Steven said, you need a performance assessment to know how utilized your EVA is now, before you can determine if you need an upgrade. You can use EVAperf, doble click icon then├в ┬ж
EVAperf> evaperf as -cont
To see your total I/O per second and total mega bytes per second. The iSCSI maximum is 1 Giga bit per second, due to Ethernet overhead, the actual maximum throughput is around 0.7 Giga bit per second, thus the bottleneck is the Ethernet network.
All you need to purchase is a minimum of 8 drives to be able to create a new disk group. FATA and FC disks cannot be in the same disk group. (As Steven said, as long as you have empty slots available).
If you don't have any empty disk slots (bays), then you will need to purchase a disk enclosure upgrade, which usually includes all the necessary cables. I believe the maximum number of disk drives for one EVA is 240, this requires to racks for a total of 18 disk enclosures.
As mentioned earlier, FATA and FC can coexist in the same EVA as long as they are in separate disk groups.
Regards,
Tim
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тАО09-29-2008 08:54 AM
тАО09-29-2008 08:54 AM
Re: Getting the most total space out of an eva8000
While I realize the fata disks are slower and less reliable, what does near online mean?
If this array is hardly hit performance-wise and is going to have say 20 users pulling a few GB files over iSCSI throughout the day, can fata handle that without the array being the bottleneck, minus the fact its not as reliable?
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тАО09-29-2008 09:06 AM
тАО09-29-2008 09:06 AM
Re: Getting the most total space out of an eva8000
'online (disk storage) and
'offline' (tape storage).
You should be fine with 20 users and a few GB, but you do realize that this is different from your original request?
""We are wanting to have 100 clients...
About 30 clients will concurrently access the array to pull files ranging from 600MB to 5GB.""
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тАО09-29-2008 09:14 AM
тАО09-29-2008 09:14 AM
Re: Getting the most total space out of an eva8000
in the article, which link I have posted in my 1st post, there is a good summary of the FATA disk usage
http://h71028.www7.hp.com/ERC/downloads/5982-7353EN.pdf
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тАО09-29-2008 09:53 AM
тАО09-29-2008 09:53 AM
Re: Getting the most total space out of an eva8000
Concurrently, it may even be as low as 5-10 users, but id say 20-30 is more accurate.
I just didnt know if fata would keep up with that. I would also probably make the most active users and targets on the FC disks, however to get the total storage I need affordably and right now, I would consider FATA.
I will go read the link in more detail now, thank you.
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тАО09-29-2008 11:08 AM
тАО09-29-2008 11:08 AM
Re: Getting the most total space out of an eva8000
We have 4 loop-back switches right now with 2 eva8000 controllers and 8 disk enclosures.
If I wanted to add say another 2 disk enclosures, do I need to add anything else? Will 4 loop-back switches support 10 enclosures, or more? Any other cables or other accessories needed?
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тАО09-29-2008 11:25 AM
тАО09-29-2008 11:25 AM
Re: Getting the most total space out of an eva8000
The 4 loop switches should be able to handle at least 1 full EVA rack (12 shelves) as well as 6 shelves in an expansin rack. The shelves come with cables to connect to the switches, as well as a CAN bus cable to attach the shelf's EMU to the cabinet bus.
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)