Raid Advice Seeked

[Andrew_271]

I have a bunch of new drives to add to my system. Since the Smart Array 6400 has a 2TB logical volume limit (right?), any recommendations on how to set up the new drives?

Is it better practice to add more 2TB logical drives to my exisiting array, or create new arrays for them? Any reasons for or against each method? Thanks!

[KarloChacon]

yes the limit is 2 TB?

what kind of array do you have in this moment?

[Andrew_271]

Currently, We have 2 arrays, with 1 logical drive each. These arrays are made of all 299.9GB disks.


--Parallel SCSI Array A with Spare
------Logical Drive 1 (2,002,684 MB raid 5)
--Parallel SCSI Array B
------Logical Drive 2 (858,293 MB raid 5)

I have added fourteen 299.9GB drives to the server. This data will be additional space to share data with logical drive 1. Do i add more drives to array A, or create Array's C, D, etc and put the drives there?

If we make them raid6, i lose 2 drives' worth of usable space per logical drive, right?

I believe i can share Hot Spare drives among multiple arrays, right?

[KarloChacon]

according with SA 6400 quickspecs
http://h18004.www1.hp.com/products/quickspecs/11587_na/11587_na.html


-Logical Drives Up to 32 logical drives
-Up to 2 TB per Logical Drive

Drives Supported
-2 channel model: up to 28 drives
-4 channel model: up to 56 drives

Maximum Capacity
-2 channel model: 8.40TB (28 drives x 300GB)
-4 channel model: 16.80TB (56 drives x 300GB)


it means that your C: D: E: ... logical drive is up to 2TB
but using until 28 HDD you can a total capacity of 8TB

using RAID 6 you can only have 2 HDD failed in the other hand RAID 5 just lets 1 HDD
RAID is more secure it's safest but the slowest

regards

[Andrew_271]

Right....but should I add logical drives to array 1, or create a new array?

[Mauro Rusignuolo]

you can do both.
it's up to you.

bye.

TJK.

[Andrew_271]

Well i realize that i CAN do both...is there one recommended one?

[Mauro Rusignuolo]

for better performances (in most cases), add the HDDs to the existing array...

bye

TJK.

[Mauro Rusignuolo]

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[KarloChacon]

ok I know that points are great I like them
jeje who does not


common people