P2000 G3 with mixed enclosures

[Marta N]

Hello,
We have got P2000 G3 dual controller with two MSA2000 G2 enclosures with data already stored on them. Is it possible to add three additional trays: one D2700 and two P2000?
Thanks,
Marta

[SUBHAJIT KHANBARMAN_1 · Accepted solution]

As per my understanding you need to change the configuration.

1st you need to detach the MSA2000 G2 enclosures because of 3GB data throughput.

so 1st connect the HP StorageWorks P2000 6Gb 3.5â 12â drive enclosure, then HP StorageWorks D2700 6Gb drive enclosure and after that HP StorageWorks MSA2000 3Gb 3.5â 12â drive enclosure in order to get the max data throughput.

I would suggest you to take the backup of your data and go for these modifications.

[SUBHAJIT KHANBARMAN_1]

Also make sure to upgrade the firmwares properly.

[Marta N]

Do you know if the risk of losing current data on MSA enclosures is big? Also if I change the connection orders will the currently connected hosts notice this difference or they will be able to access the current data as usual?
Many thanks
Marta

[SUBHAJIT KHANBARMAN_1]

It is always recommended to take the backup of your data and then go for the configuration change.

Logically it should not affect the existing data but again it is not a good practice to do any configuration change when something is online.

[Marta N]

Thank you for the advice. We have got the current backup and we will take hosts and SAN offline.

[Jon Paul]

Hi Marta,
The info you are looking for is in the cable configuration guide and the Best Practices guide.
Cable Config Guide: http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02254377/c02254377.pdf
This shows how Fault-tolerant and Straight Through cabling are configured
Best Practices:
http://h20195.www2.hp.com/v2/GetPDF.aspx/4AA3-2141ENW.pdf
This states that 3G enclosures (MSA2000 JBOD) must come at the end of the SAS line and Straight Through Cabling is required

[Marta N]

Thank you very much for all your help. this morning I connected the trays in the following order: P2000 G3 controller, D2700, P2000, P2000, MSA2000, MSA2000 using straight-through cabling. I also applied firmware updates. Everything works and no data has been lost :-)

[Marta N]

My problem has been resolved