About aborzenkov

aborzenkov · ‎2017-05-18

Your volume is thin provisioned with virtual size almost equal to aggregate size. So it can have only as much free space as aggregate has. Must other volumes are thin provisioned too, so any change in consumed capacity on any volume will affect all of them.

aborzenkov · ‎2017-05-17

Move from 7-Mode to C-Mode is always migration and will always result in some period of unavailability. It also always requires swing gear. Copying data to third party storage and wiping your netapp has downside that if anything goes wrong, you are left in rather difficult situation. For this reason both supported migration methods leave open possibility to go back to 7-Mode until your have verified your migrated C-Mode system works. I suggest you contact your netapp representatives or partners whether they can assist with migration.

aborzenkov · ‎2017-05-14

Snapshot "size" never decreases. It is amount of data changed since snapshot had been taken. Deduplication/compression change data as well (not user visible data, but what is actually stored on volumes), so they cause snapshot growth.

aborzenkov · ‎2017-05-11

Yes to both - files must be copied in binary mode and on each controller individually.

aborzenkov · ‎2017-05-09

How much free space on aggregate? Volume cannot have more space available than containing aggregate.

aborzenkov · ‎2017-05-03

Cluster interconnect expects full mesh connectivity. So while it may work I'm pretty sure it is not supported.

aborzenkov · ‎2017-04-26

Client NFS mount is tied to specific address. There is no way to transparently migrate to different IP - client must remount. It is not related to MSID..

aborzenkov · ‎2017-04-20

It is possible but to my knowledge involves diag level commands, so usual stanza applies - contact your NetApp representative or support for guidance.

aborzenkov · ‎2017-04-19

@midi wrote: I want to ask a different question, how can we add 8 SSD to an existing AFF8040 which has 40 parition SSD? The question is not quite clear - do you want to partition new SSDs in the same way as existing ones?

aborzenkov · ‎2017-04-14

Good question. This may be possible, although probably highly unusual. I would speak with your NetApp contact to ensure such configuration is supported.

aborzenkov · ‎2017-04-14

Yes, this is enough.

aborzenkov · ‎2017-04-13

In 7-Mode for HA failover to work partner *must* have access to partner root volume - it is not specific to Metrocluster. If root volume is lost, no failover is possible.

aborzenkov · ‎2017-04-13

root-data(-data) sizes are determined automatically during intitial setup and cannot be changed afterwards. I am not aware of any method to influence their sizes. You cannot mix usage - either disk is used for root-data or for pool.

aborzenkov · ‎2017-04-13

Answer to 1 is "yes". I am not sure what you mean with "block level cloning". "cp --reflink" creates file that shares actual data areas with source. To my knowledge that is what flexcloning file on NetApp does as well.

aborzenkov · ‎2017-04-13

Linux "cp --reflink" does very much the same on filesystems that support it (btrfs, I think recent XFS, ocfs2, may be more).

aborzenkov · ‎2017-04-12

Mixed case is even worse. As was recently discussed on toasters, allegedly NetApp supports having root-data(-data) on SSD disks in mixed-disk environment - but to create them you must initialize system with only SSD attached. I.e. you can add spinning disks later withou making configuration totally unsupported.

aborzenkov · ‎2017-04-11

To be sure - DR SVM was using the same IP addresses? Were they reacheable from NFS client? This may be network issue like stale ARP caches.

aborzenkov · ‎2017-04-11

This KB says "entry-level FAS and All-Flash FAS (AFF) storage systems", your system is neither as far as I can tell.

aborzenkov · ‎2017-03-31

@Harisheldon wrote: I know that when first taking the exam, the voucher must come from the company to show that you did attend the required class. You are mistaken, actually multiple times. Exam is unrelated to attendance confirmation. Actually, exam does not require that you attend any class at all - if you fill confident enough, you can just schedule exam and pass (at least take ) it. Nor does exam require a voucher. Just go to Pearson Vue, schedule exam, pay for it - you are done. You may get voucher to cover exam costs on some occasions, but it is in no case a rule. And BTW exam results/certiications are yours personally - should you change your employer, you come with your certifcates, which is exactly why people do pay for them.

aborzenkov · ‎2017-03-22

Disk ownership rules are not relevant for spare selection (if I understood your question correctly) unless all 6G shelves are owned by one node and all 12G shelves are owned by another node.

aborzenkov · ‎2017-02-20

Yes, it is specific to hardware, you need either new 12G shelves or IOM6 with sufficiently new firmware. AFAIR you cannot mix in- and out-of-band management which means that either all your shelves match in-band requirements or some shelves will be unmanaged. I do not have links to documentation handy, but I assume normal shelf installation guides should contain this information.

aborzenkov · ‎2017-01-27

Yes. You need to setup SP IP address (that is normally done from within running Data ONTAP) and then connect with SSH to this address. Physical connectivity is over wrench port.

aborzenkov · ‎2017-01-27

You can access console via SP session (system console).

aborzenkov · ‎2017-01-26

Either there is API to do it, in which case it can be done from every language, or PowerShell cmdlet internally resolves rule number and has the same race condition.

aborzenkov · ‎2017-01-26

Yes, you can.

Re: Volume Missing Space

Re: DATA MIGRATION FROM 7-MODE TO ENABLE cDOT RECONFIGURATION

Re: Snapshot changes

Re: Update Of Drive Firmware - A Few Questions

Re: CDOT 8.3.2 percent-used, percent-physical-used, and volume show-space

Re: Cascading 2 Cluster Interconnect Switches

Re: Ontap 9 Filehandle preservation

Re: AFF Partitioning in 9.1

Re: AFF Partitioning in 9.1

Re: FAS8060, 424900GB SAS disk shelves - how to configure with with maximum efficiency?

Re: Metrocluster testing

Re: Metrocluster testing

Re: Adding SAS disks to the system with flash disks

Re: Any open-source implementation of file based flex-cloning?

Re: Any open-source implementation of file based flex-cloning?

Re: root-data partitioning: FAS8020, SAS, ONTAP 9.1P2

Re: Ontap 9 Filehandle preservation

Re: root-data partitioning: FAS8020, SAS, ONTAP 9.1P2

Re: Re-Certification of NetApp Certs

Re: DS2246, DS224C and spares

Re: ONTAP 9.1 and ACP

Re: FAS factory default

Re: FAS factory default

Re: Existing export rule's indices get changed, if new rules are added with existing indices

Re: Can we allocate same lun to fc igroup and iscsi igroup