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3180
NS-G2 implementation help
Hi,
I am setting-up my first celerra implementaion with NS-G2 nas gateway.
The backend storage CX4-240 storage is shared with other SAN attached hosts and this NS G2 via SAN fabric. I have dedicated a 8+1 RAID group (1 TB space) for the NAS and finally it will be exported as NFS and CIFS for windlows and Linux user home directories.
I do not have clear idea how I should present my storage space to NAS and best practices. For a example I doubt whether I should create multiple LUNs in my single RAID group and create a meta lun and present to NAS or simply connect naked raid group to NAS without creating any lun from storage level.
it is highly appreciated if one of you could share a implementation document.
Thanks
Champaka
Rainer_EMC
8.6K Posts
0
November 9th, 2010 10:00
Hi,
if all you have is ONE 8+1R5 raidgroup than you don’t have many choices. Just create two LUN with half of the capacity each
Since striping on the same RG doesn’t help but hinder performance there isn’t much sense in doing more.
Just open Powerlink – then in the upper right-hand corner dropdown box that reads Navigator select Celerra Tools
Then select your system: NS-40G gateway
Which should drop you here http://powerlink.emc.com/km/appmanager/km/secureDesktop?_nfpb=true&_pageLabel=image6b&internalId=0b01406680253dae&_irrt=true
Then in the install quadrant select Configure Celerra
Then configure additional storage for your gateway system
Which gets you to a step-by-step http://corpusweb130.corp.emc.com/ns/common/post_install/Config_storage_gatway.htm
Make sure you CHANGE the Host ID (HLU) from its default value as described in the doc
The manuals are on Powerlink in
Home > Support NULL&internalId=0b01406680024e1b> > Technical Documentation and Advisories NULL&internalId=0b01406680024e23> > Hardware/Platforms Documentation NULL&internalId=0b01406680024e24> > Celerra Network Server NULL&internalId=0b01406680024e35> > General Reference
http://powerlink.emc.com/km/appmanager/km/secureDesktop?_nfpb=true&_pageLabel=servicesDocLibPg&internalId=0b01406680024e3f&_irrt=true
(the second Celerra entry that reads Celerra Network Server and not Celerra File Server)
Just grab the Celerra Network Server Documentation CD or bundle that contains all manuals
Have fun
Rainer
Rainer_EMC
8.6K Posts
0
November 9th, 2010 07:00
please look at the Celerra Tools section in
Powerlink - it's documented there which RAID types and sizes are supported
in terms of bees practices it's always a good idea to talk to your local EMC Implemention Specialist
in general try to provide at least two (better four) equal sized and SP balanced LUNs to the Celerra
Take a look at the AVM and MVM manuals for how it works
Rainer
JGreen
46 Posts
0
November 9th, 2010 07:00
MetaLUNs are not supported as NAS LUNs..
What type of drives is the 8 + 1 built on?
champaka1
10 Posts
0
November 9th, 2010 09:00
Hi JGreen
it is FC disks.
champaka1
10 Posts
0
November 9th, 2010 09:00
Hi JGreen,
Thank you for response..
8+1 is RAID5 configuration on backend storage.
champaka1
10 Posts
0
November 9th, 2010 09:00
Hi Rainer,
Thank you for your reply.
I have basic idea about AVM from my celerra implementation traning. but I am doubt whether I should create LUNs on my storage and assign to the NAS (as u proposed) or create a RAID group and allow AVM to handle the rest.That celerra docs for NSG2 models says to go with manually created LUNs.
Could u please help me to find AVM/MVM manuals form power llink?
Thanks
Champaka
JGreen
46 Posts
1
November 9th, 2010 10:00
I was penning this when Rainer responded and thought I would just send it out too.
Based on the fact that they are FC drives and 8 + 1 Raid5, create two LUNs in the Raid Group using the entire space, assign ownership of one LUN to SPA and ownership of the other LUN to SPB.
Add the two LUNs (ALU's) into the Celerra Storage group with HLU's higher then 16. Do a disk discovery from the NAS Head. You will now be able to manage them utilizing storage pools and AVM.
champaka1
10 Posts
0
November 10th, 2010 07:00
Hi Rainer,
Thank you very much for your detailed email..
Champaka
sebbyr
99 Posts
0
November 11th, 2010 12:00
Please refer to Primus emc138143.
This is the set of guidelines that need to be addressed when adding new CLARiiON storage to a Celerra. This solution describes the proper RAID group and LUN layout for assigning the storage to the Celerra. The Celerra NAS code has built-in safety features which address the available storage added to a Celerra. The NAS code will verify that the disks are the proper disk and RAID group layout.
Please note that the following are not supported on the Celerra:
The following features are supported with a Celerra, however strict guidelines must be followed:
For more information Also refer to "ETA emc157859: Celerra, CLARiiON: Do not use CLARiiON LUN Expansion feature to extend Celerra owned LUNs" Which will result in Data Unavailable to the end users.
When adding new storage to the Celerra using Navisphere (Celerra Gateway Models), a set of guidelines should be followed: On a per LUN basis there is a 2-terabyte LUN capacity limit. Therefore, it is best to create LUNs of about 1 terabyte in size, and then assign them to the Celerra, be sure to read the restrictions at the bottom of this solution.
Please note that the 2 TB LUN size limit for Dart is for NAS code releases prior to 5.6.44. For NAS Code releases 5.6.44 or later NAS LUN size is increased up to 16 TB.
Celerra Model NS Systems with CX or CX3 CLARiiON
(NS500, NS600, NS700, NS20, NS40, NS80)
Number of Disks in the RAID Group
CLARiiON RAID Type
Drive Type
Storage Profile / Storage Pool
Number of LUNs per RAID Group
(4+1)
RAID 5
Fibre Channel
Clar_r5_performance
2 (different SP)
(8+1)
RAID 5
Fibre Channel
Clar_r5_economy
2 (different SP)
(2)
RAID 1
Fibre Channel
Clar_r1
2 (different SP)
(2) (4) (6) or (8)
RAID 10
Fibre Channel
Clar_r10
2 (different SP) or 4 (different SP) NAS code 5.6.44 +
(4+2) (6+2) or (12+2)
RAID 6
Fibre Channel
Clar_r6
2 (different SP) or 4 (different SP) NAS code 5.5.31+ (FLARE 26)
(4+1) (6+1) or (8+1)
RAID 5
ATA
Clarata_archive
2 (same SP) or 4 (Same SP)
(4+1) or (8+1)
RAID 3
ATA
Clarata_r3
1, 2 (same SP) or 4 (Same SP) or 6 (Same SP)
(4+2) (6+2) or (12+2)
RAID 6
ATA
Clarata_r6
2 (same SP) or 4 (Same SP) NAS code 5.5.31+ (FLARE 26)
(2) (4) (6) or (8)
RAID 10
ATA
Clarata_r10
2 (same SP) or 4 (Same SP) or 6 (Same SP) NAS code NAS code 5.6.44 +
(4+1) or (6+1)
RAID 5
LCFC
Clarata_archive
1 or 2 (Same SP) CX3 only
(4+1) or (8+1)
RAID 3
LCFC
Clarata_r3
2 (same SP) or 4 (Same SP)
(4+2) (6+2) or (12+2)
RAID 6
LCFC
Clarata_r6
2 (same SP) or 4 (Same SP) NAS code 5.5.31+ (FLARE 26)
Celerra Model NS Systems with CX4 CLARiiON
(NS-120, NS-480, NS-960)
Number of Disks in the RAID Group
CLARiiON RAID Type
Drive Type
Storage Profile / Storage Pool
Number of LUNs per RAID Group
(4+1) or (8+1)
RAID 5
EFD
Clarefd_r5
4 (different SP) or 8 (different SP) NAS code 5.6.45 +
(2)
RAID 10
EFD
Clarefd_r10
4 (different SP) NAS code 5.6.45 +
(4+1)
RAID 5
Fibre Channel
Clar_r5_performance
2 (different SP)
(8+1)
RAID 5
Fibre Channel
Clar_r5_economy
2 (different SP)
(2)
RAID 1
Fibre Channel
Clar_r1
2 (different SP)
(2) (4) (6) or (8)
RAID 10
Fibre Channel
Clar_r10
2 (different SP) or 4 (different SP) NAS code 5.6.44 +
(4+2) (6+2) or (12+2)
RAID 6
Fibre Channel
Clar_r6
2 (different SP) or 4 (different SP) NAS code 5.5.31+ (FLARE 26)
(4+1) (6+1) or (8+1)
RAID 5
ATA
Clarata_archive
2 (same SP) or 4 (Same SP)
(2) (4) (6) or (8)
RAID 10
ATA
Clarata_r10
2 (same SP) or 4 (Same SP) or 6 (Same SP) NAS code NAS code 5.6.44 +
(4+2) (6+2) or (12+2)
RAID 6
ATA
Clarata_r6
2 (same SP) or 4 (Same SP) NAS code 5.5.31+ (FLARE 26)
Celerra NX4 Systems Only
Number of Disks in the RAID Group
CLARiiON RAID Type
Drive Type
Storage Profile / Storage Pool
Number of LUNs per RAID Group
(2+1) (3+1) (4+1) or (5+1)
RAID 5
SATA
Clarata_archive
2 (different SP)
(2)
RAID 10
SATA
Clarata_r10
2 (different SP) NAS code 5.6.44 +
(4+2)
RAID 6
SATA
Clarata_r6
2 (different SP)
(2+1) (3+1) (4+1) or (5+1)
RAID 5
SAS
Clarsas_archive
2 (different SP)
(2)
RAID 10
SAS
Clarsas_r10
2 (different SP) NAS code 5.6.44 +
(4+2)
RAID 6
SAS
Clarsas_r6
2 (different SP)
After the LUNs are done binding, they can be added to the existing storage group. Be sure to manually select an HLU / HID above 16. After the LUNs have been added to the Storage Group on the Celerra, select rescan. The new devices will automatically be added to the existing storage pools. (Check that the pool is set for Automatic Extension.) If the CLARiiON admin does NOT manually select a HLU / HID greater than 16, then when a rescan is conducted on the Celerra side to add this storage the following error message will appear "skipping reservered LUN id". The devices will not be added to the Celerra database until the CLARiiON HLU / HID assignment is corrected.
Note: If LUNs are being removed from the Celerra Storage Group, then this solution does not apply. Contact the EMC support for proper assistance; otherwise data corruption could occur.
Another option to remove a LUN in NAS code 5.6 is to run the following "nas_disk -d dxx -p -unbind" which will delete the Celerra disk and auto unbind the associated LUN on the CLARiiON side.