Anthony's Blog: Using System Storage - An Aussie Storage Blog
I got asked this question during the week, so I thought I would share the answer with you.
The question was: Can I create a full volume copy of an XIV snapshot?
The answer of course was YES... but here is why...
An XIV has two copy concepts:
For a particular volume you can create both snapshots.... and you can also create full volume copies.
You can actually create as many of each as you wish (more than a 1000).
A snapshot is space efficient. It uses redirect-on-write and it uses space only when blocks change on the source.
A full volume copy on the other hand uses the same amount of space as the source (its like an old fashioned flashcopy).
But here is the trick, its all managed with metadata, which makes it very efficient.
In this example I have a source volume (cleverly called "Source Vol" ) that has one snapshot.
You can see there is 7 TB of actual data in that volume.
I also have a space efficient snapshot (called "snapshot_00001").
I want to 'harden up' the Snapshot and convert it to a full volume.
So I right click on the snapshot and select the "Copy this Snapshot" option.
I am asked where to copy the volume to.
I choose the volume called 'Target Vol" which is currently empty (unformatted).
The copy process occurs in the background, but the "Target Vol"
immediately looks exactly like the snapshot.
You can see this in the next screen capture where the "Target Vol"
suddenly contains 7 TB.
I have successfully converted a snapshot into a full volume.
I could then duplicate the snapshot (creating a snap of a the snap), by selecting the snapshot and choosing "Duplicate".
What I then see is a second snapshot with exactly the same creation date and time as the first one.
What this means is that "Target Vol" and "snapshot_00002" are both children of "snapshot_00001"
But now I delete snapshot_00001.
Why is this significant?
Because "Target Vol" is unaffected (regardless of how far the copy process has gotten to) and
snapshot_00002 is unaffected (even though it was a child of snapshot_00001).
What this demonstrates is the powerful way XIV has implemented meta data.
And what it means for users is maximum flexibility. Delivered by XIV.
anthonyv 2000004B9K 6,851 Views
I have been getting a lof of requests for Storwize V7000 BTU values.
This is a good start towards providing more useful values for comparisons.
In a previous blog entry I mentioned a new iPhone and Blackberry app that gives you info on IBM Storage.
I actually now have three IBM supplied iPhone apps that you can get through the Apple Store.
The dW app is a social networking app
that lets you interact with your contacts on the
IBM developerWorks website.
I didn't realize that IBM effectively had its own
Social Networking site..... but that's exactly
what the developerWorks site is!
For more information, check out the October 13
developerWorks Podcast, available here.
There is more information here.
The IBM Storage and IBM System x iPhone apps are very similar in design and layout.
They both list product types by family, giving specifications for each machine type.
For example these are the specifications listed for the Storwize V7000.
For each product you also get a Description page and Web link pages.
You also get links to Facebook, Youtube,Twitter, LinkedIn and other contacts.
There are still some areas where things can be improved.
Not all of the products have their specifications listed yet.
They instead direct you to the web.
Never the less I think this is a great start. It shows IBM's commitment to both Social Media
and being as informative open and communicative with our customers as possible.
As for Android users, we are listening...
Expect an Android version hopefully before the end of the year.
Oh.... and to find these apps... just open the Apple iStore and search for IBM.
Its been a busy few weeks.
I just spent a week in RTP North Carolina, with the STG Education team.
We ran through our first "Implementing the Storwize V7000" course in a "Teach the Teacher" format.
It was a lot of fun and I met some great fellow IBMers.
It gave me a great opportunity to drive the Storwize V7000 GUI and explore all the new possibilities it opens up.
First up.... the GUI is fantastic. Don't be fooled by the XIV Icons, its the smarts behind what the GUI does that makes it so powerful.
Its a 21st Century GUI following very strong principles of usability and simplicity.
Talking to client after client about this product, I get lots of great questions.
Two questions I get asked on a regular basis about Storwize V7000 are:
1) What is the smallest number of SSDs I can purchase?
The answer is that you can purchase just one. However with one disk you don't get any RAID.
So its better to buy two SSDs for a RAID1 pair. If you buy three SSDs you can form a RAID5 array.
2) Will the Storwize V7000 enforce the creation of hot spares?
The answer is that the pre-sets that the GUI offers you, will suggest the creation of spares.
For every 23 array members with the same drive class on a single
SAS chain which are not RAID 0 members, a single spare is created.
However the GUI will also allow you great flexibility.
You can specify that a smaller or larger number of spares get created.
You can choose to create NO hot spares at all.
You can convert a hot spare drive into a candidate drive ( a 'free' drive).
You can convert a candidate drive into a hot spare drive.
You can set a 'spare goal' to set a minimum number of spares that need to exist (or an event will be logged).
So what you get is a great level of flexibility.
Either follow the pre-sets and get IBM best practice... or choose your own desired spare levels.
If you choose to create no spares using SSDs the Storwize V7000 will use spinning disks to rebuild a failed SSD.
Then when the failed SSD is replaced, the contents of that drive will be failed back.
I had a great time yesterday running a one day seminar for IBM Business Partners on the Storwize V7000.
Interest was so strong we had to change locations to get a larger room... and then we had to ask for an even larger room!
It was a very positive session with lots of great questions.
A really like it when I get questions.... it means people are awake, listening, interested and more importantly THINKING.
Even more exciting: IBM announced today general availability (GA) of the new IBM Storwize V7000 mid-range disk system.
We have started shipping across multiple geographies around the world, including:
Australia, Bolivia, Denmark, Germany, India, Japan, Korea, the Netherlands, Romania, Saudi Arabia,
South Africa, Sweden, the United Kingdom and the United States.
Don't hesitate to contact your IBM Sales Rep or BP and ask for a demo.
Being a person who walks dogs, visits the gym and uses public transport.... I have plenty of time to listen to podcasts.
The main challenge being that while listening to a podcast.... you actually need to LISTEN.
On more than one occasion I have zoned out, missed something interesting and suddenly thought... what did he/she just say?
One podcast that is a favourite of mine is "Security Now" with Steve Gibson. You can find it here, I highly recommend it (you wont zone out while listening to it).
This weeks episode (episode 274) discusses two themes that keep cropping up again and again:
"Of course you could also just not use IE, which would be a fantastic solution"
I heartily agree with Steve and I was pleased that this year IBM chose to standardise on the Firefox browser (read that story here).
One of the stated reasons being that Firefox is more Open Standards compliant.
So its nice to see that the new Storwize V7000 (and SVC 6.1) Web based management GUI uses both of these things, in that:
This makes it a simple, safe and secure GUI that uses industry standard best practice.
Please note that you can still choose to use IE... and it will work perfectly. Its just not our recommended Browser.
Of course if you use the CLI, it will also be secured using SSH v2 public/private key encryption (as the SVC has always done).
My hearty recommendation of Steve Gibsons work, like everything I express in this blog, is my personal opinion, and not that of my employer.
Just a short update to say that Visio Cafe has some new IBM stencils.
IBM supply the stencils to Visio Cafe who make them available free of charge to all our customers.
You can use these stencils without acknowledgement or payment.
Clearly you still need to buy Visio from Microsoft.
The latest updates can be found here: http://www.visiocafe.com/ibm.htm
In late 2008 my manager rang me with some exciting news.
I was to go to Tucson Arizona to do launch hardware training on a new product called XIV.
I was soon boarding a Qantas 747 for the long flight to the USA.
My training buddies were Hardware Specialists from all over the world.
Needless to say the XIV blew our minds. It was a total departure to what we were all used to.
Whether it was the data distribution method, the GUI, the licensing model, the rebuild times....
It was like every rule of design, of licensing and expectation of usability was being challenged.
I learnt what the term disruptive technology truly meant.
Once I was back in Australia I immediately began to run training sessions to spread the word.
Something new and exciting was on the way.
A dedicated sales team was formed, led by a remarkable live wire of a man called Steve Coad.
His first dedicated pre-sales resource was a dynamic Scotsman by the name of Derek Cowan.
It was no coincidence that both of them had previously worked at EMC.
Come January 2009 we had our first customer... and this was a huge achievement,
We were struggling with a phenomenal FUD campaign being run by our competitors.
The things they were saying were equally shocking and hilarious.
My favourite was that IBM were giving away free XIVs... vast numbers of them!
(this was before the first XIV had even shipped to Australia).
We learnt very quickly how to counter this FUD and deliver the facts.
And what a set of facts.... client after client would come up after presentations... truly impressed with our vision.
They were really excited about the benefits that this technology could deliver.
The months went by and sale followed sale.
Every new client was precious. Many of these customers had never bought any IBM Storage before.
Some had never bought ANYTHING from IBM.
I was involved with many of these sales, not only presenting and demonstrating as part of our pre-sales team,
but also implementing and supporting the clients after the sale. This continues to this day,
So why tell this story now?
Well... this week the Australia/New Zealand team sold our 101st XIV.
For our region this is a major milestone.
Many of these clients have set their entire strategy on XIV, because it delivers Tier 1 performance and saves them floor space, power, time and manpower.
And this translates straight to saving dollars....
So its been a great journey so far. Thank you so much to every customer who has placed their trust in us and our technology.
And the XIV roadmap? Watch this space.... things just keep getting better.
If your not an IBM Business Partner (or IBMer), then this blog post is sadly not for you.
I just wanted to mention that IBM Business Partners can access some truly excellent XIV education on PartnerWorld.
Check out the link here: http://www-03.ibm.com/certify/tests/edu966.shtml
If your planning to do IBM XIV Certification, the courses you can access from the link above are really excellent.
Thanks to Aaron Tully from Southern Cross Computer Services (SCCS) for pointing this one out to me.
(and good luck on your exam!).
IBM has published Storage Performance Council (SPC) SPC-2 sequential workload benchmark results for the System Storage DS8800.
The measured throughput of 9,705.74 SPC-2 MBPS™ (9.7 gigabytes per second) leads all other published SPC-2 results!
Its interesting to compare this result with the DS8300 results posted in 2006.
What it shows is how the introduction of new technology like Power-6, PCI-E and SAS v2
combined with the underlying architecture of the DS8000, has proved a winning combination.
Details are online at http://www.storageperformance.org/results/benchmark_results_spc2/#B00051
Its been a busy week!
We just completed our first IBM System Storage Symposium in Sydney.... and it was a great success.
Thanks to everyone who attended and presented.
Meanwhile... there are quite a few updates to the IBM Support site, and as usual Rob Jackard from the ATS Group
has created a great summary which I will reproduce here.
Things of particular note are:
AIX / Misc:
(2010.11.29) IBM AIX High Impact / Highly Pervasive- An operation to change the MPIO preferred path of a LUN could hang.
-Affects Users running with AIX 5.3-TL11 (APAR included in 5.3-TL11-SP5)- install APAR IZ77906
-Affects Users running with AIX 5.3-TL10 (APAR included in 5.3-TL10-SP5)- install APAR IZ77901
-Affects Users running with AIX 5.3-TL09 (APAR included in 5.3-TL09-SP8)- install APAR IZ77897
(2010.11.02) IBM Techdoc- Power Systems SAN Multipath Configuration Using NPIV.
DS3000 / DS4000 / DS5000:
(2010.12.02) Command Line Interface and Script Commands Programming Guide- IBM System Storage DS3000, DS4000, and DS5000.
(2010.11.30) RETAIN Tip# H20790- Restrictions using second ethernet port.
(2010.11.17) Installation and Migration Guide for Hard Drive and Storage Expansion Enclosure – IBM System Storage DS3000, DS4000 and DS5000.
DS8000 / DS6000:
(2010.12.02) DS8800 Code Bundle Information.
(2010.11.19) DS6000 Microcode Release 22.214.171.124.
(2010.11.03) DS Storage Manager limitation (Release 5.1.5).
(2010.12.03) Fabric OS Firmware v6.2.2d for Brocade 4 Gigabit SAN Switch Module – IBM BladeCenter.
(2010.11.22) Cisco 4 Gigabit SAN Switch Module firmware v5.0.4 – IBM BladeCenter.
(2010.11.02) Cisco 4 Gigabit SAN Switch Module firmware v4.2.3 – IBM BladeCenter.
(2010.11.02) Cisco 4 Gigabit SAN Switch Module firmware v5.0.1a – IBM BladeCenter.
SVC / Storwize V7000:
(2010.12.03) Potential Loss of Access and Data Error When Performing I/O to Thin Provisioned (Space Efficient) Volumes (Vdisks) With Used Capacity Greater Than 2 TB.
NOTE: This issue has been resolved by APAR IC72825 in the V126.96.36.199 and V188.8.131.52 PTF releases.
(20010.11.27) SVC & Storwize V7000- Management Information Base (MIB) file for SNMP.
(2010.11.27) IBM Storwize V7000 Code V184.108.40.206.
(2010.11.27) IBM System Storage SVC Code V220.127.116.11.
(2010.11.26) IBM System Storage SVC Code V18.104.22.168.
(2010.11.26) SAN Volume Controller and Storwize V7000 Software Upgrade Test Utility.
(2010.11.26) Storwize V7000 Concurrent Compatibility and Code Cross Reference.
(2010.11.23) Potential Issue Upgrading If Remote SVC Cluster Code Level is Below 22.214.171.124.
(2010.11.22) IBM System Storage SAN Volume Controller V6.1.0 – CIM Agent Developer’s Guide [GC27-2288-00].
(2010.11.22) IBM Storwize V7000 V6.1.0 – CIM Agent Developer’s Guide [GC27-2292-00].
(2010.11.16) IBM Techdoc- Accelerate with ATS: Introducing the IBM Storwize V7000.
(2010.11.12) SAN Volume Controller 2145-CF8 Node Solid-State Drives Must be Unmanaged before Upgrading to V6.1.0.x.
(2010.11.12) IBM System Storage SVC Console (SVCC) V6.1.0.
(2010.11.12) V126.96.36.199 – SAN Volume Controller Code.
(2010.11.12) V188.8.131.52 – IBM Storwize V7000 Code.
(2010.11.11) Guidance When Upgrading IBM System Storage SAN Volume Controller Clusters That Contain 2145-CF8 Nodes With Solid-State Drives.
(2010.11.11) SVC and Storwize V7000- CIMOM Unable to Return List of More Than 4000 Remote Copy Relationships.
(2010.11.11) Disk Space Low Warning When Upgrading From SAN Volume Controller V5.1.0.x to V6.1.0.x.
(2010.11.11) IBM System Storage SAN Volume Controller 6.1.0 Configuration Limits and Restrictions.
(2010.11.02) IBM System Storage SAN Volume Controller V5.1.0 – Customer Documentation.
(2010.10.28) Power and Cooling Requirements for the IBM Storwize V7000.
(2010.10.22) IBM Storwize V7000 V6.1.0 – Installable Information Center and Guides.
(2010.10.18) IBM Storwize V7000 V6.1.0 – Troubleshooting, Recovery, and Maintenance Guide [GC27-2291-00].
(2010.10.18) IBM Storwize V7000 Quick Installation Guide [GC27-2290-00].
(2010.10.18) IBM System Storage SAN Volume Controller and Storwize V7000 V6.1.0 – CLI User’s Guide [GC27-2287-00].
(2010.10.18) IBM System Storage SAN Volume Contoller V6.1.0 – Software Installation and Configuration Guide [GC27-2286-00].
(2010.10.18) IBM System Storage SAN Volume Controller V6.1.0 – Troubleshooting Guide [GC27-2284-00].
(2010.10.18) IBM System Storage SAN Volume Controller V6.1.0 – Hardware Maintenance [GC27-2226-03].
(2010.10.18) IBM System Storage SAN Volume Controller V5.1.0 – Software Installation and Configuration Guide [SC23-6628-06].
(2010.10.18) IBM System Storage SAN Volume Controller Model 2145-CF8 Hardware Installation Guide [GC27-2282-00].
SSPC / TPC / TPC-R:
(2010.12.03) IBM Tivoli Storage Productivity Center and IBM Tivoli Storage Productivity Center for Replication: Flash for Version 4.2.
(2010.12.03) System Storage Productivity Center Flash for Version 1.5.
(2010.12.02) TPC- IC72867: Storage Optimizer shows error HWNOP0036E for SVC.
(2010.12.02) TPC-R buttons and functions greyed out in browser GUI.
(2010.12.01) Collecting Data for TPC: SRA Install and Run-Time problems.
(2010.12.01) TPC- Error WSWS3192E: return code: (401) Unauthorized.
(2010.12.01) TPC- Probe fails with error code SRV0081E.
(2010.11.29) TPC- Oldest Orphan Files Report.
(2010.11.22) IC57994 IBM TotalStorage Productivity Center support of IBM System Storage N Series Gateway Servers.
NOTE: With TotalStorage Productivity Center v184.108.40.206, support for the IBM System Storage N Series Gateway servers has been upgraded.
(2010.11.15) Location of the TPC InstallShield registry ‘IBM-TPC’ directory.
(2010.11.12) IBM Tivoli Storage Productivity Center 4.2.1 GA (November 2010).
NOTE: This release will show up as Tivoli Storage Productivity Center 220.127.116.11 and Tivoli Storage Productivity Center for Replication 4.2.1.
(2010.11.12) TPC APAR Fix List – v4.2.x.
(2010.11.12) 4.1.1 Interim Fix 2 (October 2010) for Tivoli Storage Productivity Center.
NOTE: This interim fix (18.104.22.168) has an APAR fix for regression APAR IC70486. It supersedes IBM Tivoli Storage Productivity Center 4.1.1 fix pack 5 (22.214.171.124).
(2010.10.25) TPC v4.2 Views Documentation – IBM Tivoli Storage Productivity Center.
(2010.10.22) Basic Administration and Troubleshooting of DB2 for TPC 4.2.
(2010.10.20) TPC 4.2.x – Supported Storage Products Matrix.
(2010.10.05) TPC 4.2.x – Platform Support: Agents, Servers and GUI.
(2010.11.29) IBM XIV MIB file for SNMP.
(2010.11.29) IBM Techdoc- Migrating an SAP environment from legacy storage to IBM XIV Storage System.
(2010.11.02) Potential Problem to 10.2.2 & 10.2.2.a XIV Storage System that can be caused by changing system time via Network Time Protocol (NTP).
IBM Interoperability Matrices:
NOTE: Many of the traditional Storage Interoperability matrix files for each specific storage system will be sunsetting, please begin to use and
familiarize yourself with the System Storage Interoperation Center (SSIC):
IBM System Storage DS4000 series- Interoperability Matrix [Last Updated:06/15/2009]
IBM System Storage DS5000 series- Interoperability Matrix [Last Updated:06/15/2009]
IBM SAN Volume Controller (SVC):
-V6.1.x Recommended Software Levels [Last Updated:10/07/2010]*
-V6.1.x Supported Hardware / Software Levels [Last Updated:11/26/2010]*
-V6.1.x SVC Restrictions [Last Updated:11/24/2010]*
-V5.1.x Recommended Software Levels [Last Updated:09/15/2010]
-V5.1.x Supported Hardware List [Last Updated:09/03/2010]
-V5.1.x SVC Restrictions [Last Updated:09/23/2010]
-V4.3.x Recommended Software Levels [Last Updated:08/05/2010]
-V4.3.x Supported Hardware List [Last Updated:09/03/2010]
-V4.3.x SVC Restrictions [Last Updated:11/17/2009]
IBM Storwize V7000:
-V6.1.x Supported Hardware / Software Levels [Last Updated:11/26/2010]*
-V6.1.x SVC Restrictions [Last Updated:11/24/2010]*
Cisco SAN: [Last Updated:08/31/2010]
NOTE-1: Latest NX-OS support for 4.2(7a) and 5.0(1a). Updated BladeCenter Cisco FCSM support for NX-OS 4.2(3).
NOTE-2: Customers that do not require an upgrade to NX-OS, but require field updates may install SAN-OS 3.3(5).
IBM SAN (Brocade): [Last Updated:11/23/2009]
IBM SAN (McData): [Last Updated:11/06/2008]
TotalStorage Virtualization (TPC):
Virtual I/O Server for Power Systems- Supported Environment:
Its been over a week since the Sydney Storage Symposium finished and I now have the feedback results.
The symposium itself was a great success and was a fully booked event (a full house!).
We ran 48 separate sessions across two and a half days,
all of them focused on storage and how IBM provides solutions for this space (including things like Cloud and DR).
These included many lab sessions on SVC, TPC and XIV.
Sessions were also given by IBM partners including Brocade and Qlogic.
In addition Brocade, Qlogic and LSI each manned a vendor stall to share information about their products.
And to top this off, Alexis Giral from the IBM Storage Pre-Sales team in Sydney
manned a Storwize V7000 demonstration stand for the entire event.
Attendees were able to see, hear, touch and most importantly play with, an actual Storwize V7000.
Feedback was sought from every attendee for every session. Feedback was also sought for the entire Symposium.
Of the sessions, the majority scored a net satisfaction rating of 100% (which is an excellent result).
The overall satisfaction rating for the conference was 99%.
The most popular session was: "Introducing the Storwize V7000"
Some of the feedback given across all of the sessions included:
Some of the suggestions given for future symposiums included:
I personally presented four different presentations, which were:
The last session listed (SAN Best Practices) was my favourite. The room was packed to over flowing
and the audience was very interactive.
So with all of this feedback and experience under our belts we can begin planning for the 2011 event.
In 2011 we will be holding another IBM System Storage event, this time in Melbourne, so watch this space for more updates.
A final blog entry before Christmas, with a little Christmas present for all our midrange storage users.
The IBM System Storage Interoperation Center (SSIC) found here now lists all of IBMs LSI based
Midrange and Entry Disk systems. So you can now select VMware vSphere/ESX 4.1...
and then find products like the DS4700 and DS4800.
As you can see, the DS4700 has 5808 different configuration results, so hopefully your environment is in there.
If your environment is still not listed, please contact your IBM FTSS or Business Partner to ask for a SCORE request to get support.
I have noticed something suspicious on the developerWorks forum.
Updates are coming from new users where:
Their posts always come in one of three flavours.
1) They create posts with comments like "Thanks for sharing". Here are some examples:
2) They may instead complain about broken links (which are NOT broken), such as these two:
3) Finally, they may kind of ask a question, but without really referring to the material they reference, such as these:
I have sent messages to the majority of these 'people', but so far they have NOT responded, nor do I expect them to.
My long term plan is to simply delete their posts and ban their user ids.
What are they up to? I don't know.
But given that none of their posts ADD anything to the DW forum, I have no fear in REMOVING them.
So I have three requests from my audience:
It could be that I have become unnecessarily paranoid, but this pattern seems to be rather strong.
If your using Microsoft Windows hosts with XIV, there are minimum required Microsoft hotfixes.
They are listed in the Host Attachment Kit (HAK) 'release notes found here: HAK Release Notes
However I have learnt that some additional fixes are recommended, particularly if your planning an XIV firmware update:
•Windows 2003: http://support.microsoft.com/kb/950903
•Windows 2008: http://support.microsoft.com/kb/983554
So please check your systems to see if these hotfixes are installed.
If not, you should plan to schedule them on your next patch Tuesday.