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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 2
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, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
V├нctor Cesp├│n
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.