EVA8000 VS. HPUX

[Uwe Zessin]

I don't recall it is visible anywhere. You need to take the raw capacity and calculate the avaliable space yourself, I am afraid.

[Thayanidhi]

Hi,
I generally use the below formula to calculate the disk requirements in EVA.

DiskCount= ((UsableV0 * 538) + (UsableV5 * 673) + (UsableV1 * 1076))/(DiskCap * 476) + (ProtLevel * 2)

Adjust the UsableVx to reach the diskcount below your actual.

Regds
TT
Note: From CV-EVA when you choose the create vdisk, then it shows the disk groups and space left in that disk group for each vraid.

[Uwe Zessin]

Ah yes, I recognize those formula from the EVA V1 days.

If I remember correctly, you need to specify the disk capacity in HWGB,
the Vdisk capacity in SWGB and there is a secret 10% add-on.

[Peter Mattei]

You must be running a rather old version of Command View.
I am running 3.3 and am really seeing the proper available capacities for the various RAID levels (See attached jpg)

These values show the total availabel space. Even if you see 5TB the max LUN size stays at 2TB due to the mentioned SCSI limit.

Also also stated above the usual way on HP-UX is using LVM and building volumes with multiple LUNs. So you could go and select 5 LUNs with 1TB each and present a volume of 5TB to your application.

A very good side effect is, that you can grow your volume by adding LUNs at any time!

Cheers
peter

[Guido Herrera]

:-(