Disk Arrays
cancel
Showing results for 
Search instead for 
Did you mean: 

Single Logical Drive versus Multiple Logical Drives

Randy McRae
Occasional Contributor

Single Logical Drive versus Multiple Logical Drives

I am weighing the question of which configuration is more efficient yet produces respectable performance. I have a Proliant DL380 G4 with two external chassis attached via an SA6402 controller. Each chassis has (14)146GB SCSI drives. I guess the question is "Should I configure both chassis as a single array/logical drive or as two separate arrays/ logical drives. It will be configured as a single drive letter in the OS (W2K3).
2 REPLIES
Steven Clementi
Honored Contributor

Re: Single Logical Drive versus Multiple Logical Drives

Randy:

The real question(s) you need to ask...

How redundant do I need my array to be?

How much space can I afford to lose and still meet my requirements?

What RAID level do you require?


There are several different configurations you can do with 2 shelves, not just the 2 you mention.


Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5)
RHCE
NPP3 (Nutanix Platform Professional)
Víctor Cespón
Honored Contributor

Re: Single Logical Drive versus Multiple Logical Drives

Also, the Smart Array 6400 has a 2 TB limit per logical drive, so you will need to create at least two logical units anyway.

For performance reasons (using both SCSI channels) one possibility is to create 2 RAIDs with 7 disks from each enclosure each.