Windows 2003 Hosts cannot see EMC VMAX Storage - Troubleshooting

Windows 2003 Hosts cannot see EMC VMAX Storage - What are some troubleshooting tips from the storage side that can be done? Should Windows flags be checked along with WWN's?

Please follow below steps 

1) Check the HBA are configured properly at host end 

2) Check Proper WWNs are used in zoning and ports are logging fine. 

3) Check the IG(Initiator Group ) has been created with right WWNs 

4) SPC2 and OS2007 flags should enabled at Initiator (or) IG level(by default the   VMAX FA are enabled with these flags .) 

5) Check the Devices are in Ready (or) Read_Write state
5) Recheck Masking View again with proper (IG,SG and zoned Port_group ) are used.

***
Check the server hba zoning and logged in status in the VMAX array. Use
the below command 
symaccess -sid xxx list logins -wwn < wwn no>



***
There should be no more than 255 LUNs because Windows cant' see LUNs on target 255

NetApp Undedup Procedure

•   Confirm the available space on each volume using the command “df –g <volname>” 
•   Confirm the dedupe savings on each volume using the command “df –s <volname>” and/or “sis status /vol/<volname>”.
•  Confirm that the volume’s current utilization can accommodate the additional data blocks.
•   Pause snapmirror jobs by entering the “#” in the snapmirror.conf file on the destination system.
•  Resize both prod and COB volumes according to dedup savings.
•  Disable dedupe (ASIS) on each volume using the command sis off /vol/<volname>
•  Enter privileged command mode using the command “priv set diag”
•  Begin the process of un-deduping each volume using the command “sis undo /vol/<volname>”
•  Monitor processor utilization with the command “sis status /vol/<volname>.
•  Repeat for additional volumes.
•  Confirm that dedupe has been removed by comparing the output of df –g before and after the undedupe process.
•  Confirm that dedupe has been disabled by running the command “sis status”.
•  Confirm volume utilization by running the “df –g <volname>” command.
•  To stop undedup “sis stop /vol/path”.

Maximum NDMP sessions for Data ONTAP 8.x

Considerations when using NDMP

You have to take into account a list of considerations when starting the NDMP service on your

storage system.

• Data ONTAP supports a maximum of 16 concurrent backups, restores, or both on a local tape

drive.

This includes backups initiated by NDMP as well as by the storage system’s dump, restore, and

smtape commands.

However, a storage system supports a maximum of 32 dump or restore sessions and 32 smtape

sessions.

• NDMP supports a maximum of 128 concurrent sessions on NearStore and 40 on other systems.

The following table defines the maximum number of NDMP sessions for storage systems running Data ONTAP 8.x:

Platform	Max QSM/SV	Max QSM/SV	Max NDMP sessions	Max NDMP sessions
	(with NearStore)	(no NearStore)	(with NearStore)	(no NearStore)
==========	============	===========	===============	===============
FAS2040	160	64	232	136
FAS2240	120	64	192	136
FAS3040	160	64	232	136
FAS3070	320	64	392	136
FAS3140	160	64	232	136
FAS3160	320	64	392	136
FAS3170	384	64	456	136
FAS3210	120	64	192	136
FAS3240	320	64	392	136
FAS3270	320	64	392	136
FAS6030	384	96	456	168
FAS6040	384	96	456	168
FAS6070	512	128	584	200
FAS6080	512	128	584	200
FAS6210	512	128	584	200
FAS6240	512	128	584	200
FAS6280	512	128	584	200

NetApp basic Volume and Vfiler commands

Here are the commands for Volume and Vfiler level

vol create Volume1 aggr1 680g vol options  Volume1  guarantee none vfiler add vfiler1 /vol/Volume1 vfiler run vfiler1 cifs shares -add Volume1  /vol/Volume1 vfiler run   vfiler1  cifs access -delete Volume1  everyone vfiler run  vfiler1  cifs access  Volume1  FOL\GOOGLE_MT Read vfiler run  vfiler1  cifs access  Volume1   FOL\GOOGLE_CA_SAs Full Control exportfs -p rw=server40-boot.n........................root.net /vol/Volume1 vfiler run vfiler1 exportfs -p rw=server40.............root.net /vol/Volume1  qtree security /vol/ Volume1/ unix  qtree security /vol/Volume1/qtree1 unix  cifs terminate  -V Volume1 exportfs -u /vol/Volume1 useradmin domainuser add user1 -g administrator

CF\VIF Failover test - NetApp Filers.

Usually for a new Filers we will be testing CF\VIF takeover test  before getting that BOX to Production...now here let's see procedure.


CF Takeover:


1. Login to Netapp CLI using your Login credentials.
2. Turn off SNMP and Autosupport before do this 
      --> options snmp.enable off
      --> options autosupport.enable off
3. Before starting the test make sure "Takeover NODE is UP"
      --> cf status
4. Now we need to run takeover command
     --> cf takeover
5. While the node is trying to do takeover - try to ping other node...finally it will be giving alert that "Takeover is sucess"
6. Check the status by 
     --> cf monitor
7. Once the node is ready to giveback 
       --> cf status (tells us if node is ready to giveback or not)
       --> cf giveback
8. Then check the "cf status" node should show as UP
9. ON -  SNMP and Autosupport
      --> options snmp.enable on
      --> options autosupport.enable on
10. To get the LOGS go to /etc/messages - and get the Failover logs.




VIF Failover:


1. See the status of interface 
    --> ifgrp status
2. If above cmd shows 1 - up and 1- down, note the name of non-active(which dhows down) interface and test it
3. ifgrp favor e2a
4. go to /etc/messages to collect the Failover logs.

Basic commands for NetApp filers.

Below are some basic commands which we use in our day-to-day operations.

• sysconfig -a : shows hardware configuration with more verbose information
• sysconfig -d : shows information of the disk attached to the filer
• version : shows the netapp Ontap OS version.
• uptime : shows the filer uptime
• dns info : this shows the dns resolvers, the no of hits and misses and other info
• nis info : this shows the nis domain name, yp servers etc.
• rdfile : Like "cat" in Linux, used to read contents of text files/
• wrfile : Creates/Overwrites a file. Similar to "cat > filename" in Linux
• aggr status : Shows the aggregate status
• aggr status -r : Shows the raid configuration, reconstruction information of the disks in filer
• aggr show_space : Shows the disk usage of the aggreate, WAFL reserve, overheads etc.
• vol status : Shows the volume information
• vol status -s : Displays the spare disks on the filer
• vol status -f : Displays the failed disks on the filer
• vol status -r : Shows the raid configuration, reconstruction information of the disks
• df -h : Displays volume disk usage
• df -i : Shows the inode counts of all the volumes
• df -Ah : Shows "df" information of the aggregate
• license : Displays/add/removes license on a netapp filer
• maxfiles : Displays and adds more inodes to a volume
• aggr create : Creates aggregate
• vol create <volname> <aggrname> <size> : Creates volume in an aggregate
• vol offline <volname> : Offlines a volume
• vol online <volname> : Onlines a volume
• vol destroy <volname> : Destroys and removes an volume
• vol size <volname> [+|-]<size> : Resize a volume in netapp filer
• vol options : Displays/Changes volume options in a netapp filer
• qtree create <qtree-path> : Creates qtree
• qtree status : Displays the status of qtrees
• quota on : Enables quota on a netapp filer
• quota off : Disables quota
• quota resize : Resizes quota
• quota report : Reports the quota and usage
• snap list : Displays all snapshots on a volume
• snap create <volname> <snapname> : Create snapshot
• snap sched <volname> <schedule> : Schedule snapshot creation
• snap reserve <volname> <percentage> : Display/set snapshot reserve space in volume
• /etc/exports : File that manages the NFS exports
• rdfile /etc/exports : Read the NFS exports file
• wrfile /etc/exports : Write to NFS exports file
• exportfs -a : Exports all the filesystems listed in /etc/exports
• cifs setup : Setup cifs
• cifs shares : Create/displays cifs shares
• cifs access : Changes access of cifs shares
• lun create : Creates iscsi or fcp luns on a netapp filer
• lun map : Maps lun to an igroup
• lun show : Show all the luns on a filer
• igroup create : Creates netapp igroup
• lun stats : Show lun I/O statistics
• disk show : Shows all the disk on the filer
• disk zero spares : Zeros the spare disks
• disk_fw_update : Upgrades the disk firmware on all disks
• options : Display/Set options on netapp filer
• options nfs : Display/Set NFS options
• options timed : Display/Set NTP options on netapp.
• options autosupport : Display/Set autosupport options
• options cifs : Display/Set cifs options
• options tcp : Display/Set TCP options
• options net : Display/Set network options
• ndmpcopy <src-path> <dst-path> : Initiates ndmpcopy
• ndmpd status : Displays status of ndmpd
• ndmpd killall : Terminates all the ndmpd processes.
• ifconfig : Displays/Sets IP address on a network/vif interface
• vif create : Creates a VIF (bonding/trunking/teaming)
• vif status : Displays status of a vif
• netstat : Displays network statistics
• sysstat -us 1 : begins a 1 second sample of the filer's current utilization (crtl - c to end)
• nfsstat : Shows nfs statistics
• nfsstat -l : Displays nfs stats per client
• nfs_hist : Displays nfs historgram
• statit : beings/ends a performance workload sampling [-b starts / -e ends]
• stats : Displays stats for every counter on netapp. Read stats man page for more info
• ifstat : Displays Network interface stats
• qtree stats : displays I/O stats of qtree
• environment : display environment status on shelves and chassis of the filer
• storage show <disk|shelf|adapter> : Shows storage component details
• snapmirror intialize : Initialize a snapmirror relation
• snapmirror update : Manually Update snapmirror relation
• snapmirror resync : Resyns a broken snapmirror
• snapmirror quiesce : Quiesces a snapmirror bond
• snapmirror break : Breakes a snapmirror relation
• snapmirror abort : Abort a running snapmirror
• snapmirror status : Shows snapmirror status
• lock status -h : Displays locks held by filer
• sm_mon : Manage the locks
• storage download shelf : Installs the shelf firmware
• software get : Download the Netapp OS software
• software install : Installs OS
• download : Updates the installed OS
• cf status : Displays cluster status
• cf takeover : Takes over the cluster partner
• cf giveback : Gives back control to the cluster partner
• cf disable : To turn of takeover alerts.
• cf enable : To turn on takeover alerts
• reboot : Reboots a filer