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VNX Experts- Any suggestions on how to do this VNX migration?
Hi All.
We may have a project coming up. Any suggestions on how to migrate what is below? Also, roughly how much time would you suggest is needed (factoring in possible issues)? Thanks guys!
10+ Hosts from HP/EVA and IBM/DS3400 to new EMC VNXe3200
There are 4 sites. All the servers are Windows and physical:
File Server (MS File Share services) Windows Server 2003 1.5 TB Flat File (1.2 TB)
(MS File Share services) Windows Server 2003 500 GB Flat File (400 GB)
Backup Server (Backup Exec 2012) Windows Server 2003 1 TB Flat File (900GB)
File Server (MS File Share services) Windows Server 2008 - Ent. 64 Bit 1.5 TB Flat File (1.2 TB)
Backup Server (Backup Exec 2012) Windows Server 2008 - Ent. 64 Bit 1.1 TB Flat File (950GB)
(MS File Share services) Windows 2003 Standard 1.4 TB Flat File (700GB)
Database Server (Empower 3) Windows Server 2008 - Ent. 64 bit 1.6 TB Oracle DB (1.3TB)
Database (Empower 3 ) Windows Server 2008 - Ent. 64 bit 1.2 TB Oracle DB (1.3TB)
(MS File Share services) Windows Server 2008 - Ent. 64 Bit 1.4 TB Flat File (1.3 TB)
(Backup Exec 2012) Windows Server 2008 - Ent. 64 Bit 1.4 TB Flat File (1 TB)
(MS File Share services) Windows Server 2008 - Ent. 64 bit 1.4 TB Flat File (1.3 TB)
Backup Server (Backup Exec 2012) Windows Server 2008 - Ent. 64 bit 1 TB Flat File (1 TB)
Database Server Windows Server 2008 - Ent. 64 bit 1.3 TB Oracle DB (200 GB)
Databse Server Windows Server 2008 - Ent. 64 bit 1.8 TB Oracle DB (160 GB)
umichklewis
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August 2nd, 2015 04:00
PowerPath Migration Enabler is pretty straight forward. We've only done Host-based Copies for our migrations, but we've moved LUNs under Microsoft Cluster Services with relative ease. I strongly urge you to test a migration with a host, to get a feel for the procedure. You'll find that you can control how the copy takes by changing the throttle setting. Be sure to experiment with the throttle, to understand the implications of increasing or decreasing it. Finally, if you have to move cluster LUNs, you'll want to be on a very recent version of PowerPath, to be able to move them easily. Recent support for Windows 2008 and 2012 makes cluster migrations a breeze.
Let us know if that helps!
Karl
umichklewis
1.2K Posts
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July 31st, 2015 12:00
Judging from your source (EVA and DS3400), I take it you're talking about a block migration, yes? If so, you might want to investigate PowerPath Migration Enabler. Check the EMC eLab Navigator and see if the specific version of hardware/software on your source arrays are supported by PowerPath. If they are, you might consider using PPME to migrate LUNs from the old arrays to the new arrays.
We have been steadily moving LUNs to/from Hitachi HUS150s and VMAX 20Ks with the only downtimes due to having to upgrade PowerPath versions or install Third Party support for PP.
As far as time, PPME uses host cycles to get source/target LUNs in sync, so the faster machines should sync a little faster.
Let us know if that helps!
Karl
rhiaanon48
14 Posts
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August 1st, 2015 17:00
Thank you very much for the response! Yes it is block and I am pouring over the docs in eLab. Did you have any issues with powerpath?
rhiaanon48
14 Posts
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August 2nd, 2015 07:00
Thanks a lot I greatly appreciate the advice.! One other question, how long would it probably take (approximately), using this process to migrate the data?
umichklewis
1.2K Posts
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August 3rd, 2015 09:00
As with all things in life, "It Depends".
The copy uses Host CPU I/O cycles to move data from the source disk to the target disk. You'll find that the busier the source disk or the busier the Host CPU, the longer the migration takes. You should setup and test your own migration to determine how long the copy will take. Without knowing how busy your host arrays are, it's impossible to approximate how long the copies will take.
It's extremely easy and non-disruptive to test: simply follow the steps in the PowerPath Migration Enabler User's Guide to setup your host copy, then start a sync. It's that simple. You'll be able to see how fast the copy is moving and how long until the device is in sync with "powermig query" :
Let us know if that helps!
Karl