HPE EVA Storage

Minimun number of disk in a diskgroup - Eva 8400

 
sube-it
Occasional Contributor

Minimun number of disk in a diskgroup - Eva 8400

what is the minimun number of Disk in a new diskgroup for an Eva 8400 ?
8 REPLIES 8
Bulent ILIMAN
Trusted Contributor

Re: Minimun number of disk in a diskgroup - Eva 8400

8, for all models of EVA,
max is the number of disks EVA model supports.
sube-it
Occasional Contributor

Re: Minimun number of disk in a diskgroup - Eva 8400

ok, but this a minmun number recomended or is the minimun number supported ?
Uwe Zessin
Honored Contributor

Re: Minimun number of disk in a diskgroup - Eva 8400

It's the minimum number required - you can't create a disk group with less, except if you're using 6 SSDs.

The minimum number 'recommended' depends on the required disk capacity and how many I/Os the EVA needs to deliver for your servers.
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Mark...
Honored Contributor

Re: Minimun number of disk in a diskgroup - Eva 8400

Hi,
8 disks is the minimum for FATA and FC drives to form a new disk group. You can add more in if you wish at the time of creation or just add them in later. Recommended to add in in multiples of 8 but it can be any number.
6 is the MIN for SSD with a MAX of 8 for SSD.
You can only have 8 SSD max in any EVA that supports them.
All drives in a disk group must be the same typa of drive as in ALL FATA or ALL FC but you can mix the different speeds / capacities but it is generally not recommended to do this for several reasons.
Max number of disks per disk group = all the disks of a given type in the array.
Min disk groups for ALL EVA is 1.
Max depends on EVA but for an 8400 it is 16.
Mark...
if you have nothing useful to say, say nothing...
sube-it
Occasional Contributor

Re: Minimun number of disk in a diskgroup - Eva 8400

thanks a lot for yours answers.

Bulent ILIMAN
Trusted Contributor

Re: Minimun number of disk in a diskgroup - Eva 8400

thanks for assigning points
armyguy
New Member

Re: Minimun number of disk in a diskgroup - Eva 8400

I have made a disk group of 8ea 450gb disks for logs. What is the minimun number a disks required to have single disk drive protection level with 8 disks.

Sheldon Smith
HPE Pro

Re: Minimun number of disk in a diskgroup - Eva 8400

Single protection reserves twice the size of the largest disk in the disk group.

Double protection reserves four times the size of the largest disk.


Note: While I am an HPE Employee, all of my comments (whether noted or not), are my own and are not any official representation of the company

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