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MSA1500cs and MSA30

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Holger Fabian
Occasional Advisor

MSA1500cs and MSA30

Has everybody an Best Practice for Best Performance.(LUNs, Raid Groups, active/active Configuration etc.)?

Thanks

Holger
7 REPLIES
IBaltay
Honored Contributor
Solution

Re: MSA1500cs and MSA30

Hi,
here is a brief doc which best practices is a part:
http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c00139893/c00139893.pdf

other docs are here:
http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentType=SupportManual〈=en&cc=us&docIndexId=64179&taskId=101&prodTypeId=12169&prodSeriesId=415598
the pain is one part of the reality
Holger Fabian
Occasional Advisor

Re: MSA1500cs and MSA30

Hi

Thanks.
But another Question is: How many Disks (300GB SCSI) are maximum per Array for best Performance. Is there any Limitations or is more Disks per Array=More Performance in Raid 1+0 Configuration??

Example: It is Better one Array with 14 Disks across the shelfs or two Arrays with 7 Disks...

Holger

How many mb/s is Maximum for an MSA1500cs?
IBaltay
Honored Contributor

Re: MSA1500cs and MSA30

Hi,
a)some details could be found here
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1082647&admit=109447626+1221911235150+28353475
e.g. in Petes attachement

b) yes the more physical disk in an array, the more spindles in its logical volumes.
Though you have no physical isolation and in case of the serious HW failure you may loose the whole data

c) you can also "tune" the performance with the firmware upgrade from the active/passive (up to the firmware 5.20) (one conroller always only the failover standby) to the active/active, in which both controllers access the lun (the firmware 7.0)
the pain is one part of the reality
Marcus Martin
Frequent Advisor

Re: MSA1500cs and MSA30

After some research i have found the following to give the best all round redundancy and space saving

given that i have 1xMSA1500cs and 2xMSA30 fully populated with 300GB Sata drives

3 arrays of 8 disks each spread over both MSA30 shelves thus utilising 2.28TB of storage, after raid 5 initialisation you get 2.00TB of storage which is a 12% loss. Overall this proved to be the most cost efficient use of the storage.

utilise another 2 disks in raid 0 for any particularly fast storage requirements and 2 disks as spares 1 for each shelf. 1 spare would be enough though.

I'm sure someone will come up with a better configuration but it seems to be working well here.

Marcus
Marcus Martin
Frequent Advisor

Re: MSA1500cs and MSA30

Just to add

In each array i have 3 x 500GB logical drives with 500GB of spare space for logical drive extension.

:D have a nice day
Uwe Zessin
Honored Contributor

Re: MSA1500cs and MSA30

> 2xMSA30 fully populated with 300GB Sata

I don't know if there are 300GB SATA disk drives available for this environment, but something does not match anyway:
- the MSA30 is a SCSI disk drive enclosure and
- the MSA20 is for SATA
.
Marcus Martin
Frequent Advisor

Re: MSA1500cs and MSA30

Sorry in either instance it is Sata Drives that i have not SCSI got mixed up with the numbering.

300GB is available for the MSA20

thanks for for the correction.