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Monday
25Jan2010

Moving up to spin down..

As arrays become more and more dense and as energy costs trend upward, it becomes more imperative to take advantage of such features of Disk Spin Down Technology. As part of FLARE 29 on the EMC Clariion CX4 arrays, the ability to track disk idle time is not only an important feature but a necessity in multi-purpose arrays.

With the introduction of FAST, the dexterity to automatically tier to SATA as part of an archive or storage tiering initiative quickly becomes a win-win. Not only from the perspective of freeing up expensive FC or Flash disk, but also from the viewpoint of spinning down the disks supporting that rarely used archived data. This ultimately leads to reduced energy and cooling costs and summers in the Hamptons if you get my drift..

image

Now, here is an interesting table addressing DDSD and potential power savings. Of course take these numbers with a grain of salt, as these numbers are driven by application type and drive access. Note: this only takes into account power consumption from a drive perspective not any other componentry within the Clariion itself. Now the amount of power saved is directly harmonious to how much the disks spin in this idle mode. Only the electronics are active, the actual drive motor is not.

-Modes of Operation-

Well there really is only one with DSDT but further explanation is needed. So…the mode I speak of is Standby mode. The requirements for entering and exiting this mode, as well as limitations are quite simple and noted below. The drives can enter this mode when both Storage Processors report in that none of the drives in a RG have been accessed within a 30 minute interval, fixed value here..cannot change. But remember this, and this is important so listen up. Here is where LUN design and RG design are paramount. Senor FLARE only tracks I/O activity at the RG level NOT at the LUN level. Therefore if you have two LUNs within an RG, one is as active as a drunk bunny one is not, then chances are those drives will most likely never enter standby mode and you will be chumming around with egg on your face.  Anyway, how about those requirements for candidacy…

  • Drives that are independent or absent from any RAID group are you guessed it, in like flynn
  • Drives that are members of a  RAID group but have no LUNs bound on them, indeed.
  • Drives that are configured as hot spares after being idle for 30 minutes..you betcha
  • Only a “GO” on the CX4, sorry..
  • Eligibility of the vault drives for spin down..ummm..bite your tongue
  • Any layered app usage a top a RG is a recipe for non-supportedness..
  • And, only 1TB SATA II drives under FLARE 29’s tutelage are spin-down qualified <—this will change soon..

-What You Need to Know-

This technology can be managed one of two ways. One, at the storage system level and two, at the RAID group level. What this implies is if enabled at the storage system level, all drives not bound within a RAID group immediately benefit from this feature (assuming they meet the above limits). If enabled at the RAID group level, well do the math, a little more effort pursues but greater efficiencies can be realized.

A number of error checking and sniffing mechanisms run periodically to ensure drive reliability and data integrity as this type of drive access is a bit against the grain. Furthermore, the barrage of testing that disk vendors and EMC themselves do, to me is complete enough to put your trust in it. Now I am glazing over a lot of the details so please feel free to read the hot and heavy here. So in closing, drawing attention to capabilities that you already own as a Clariion/Celerra customer helps you gain greater efficiencies without the added expense, that again is a win-win…

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Tuesday
19Jan2010

The @Sakacc Effect.. #EMC #vgeeksquad

I write these words only to mark a period in time of great significance. 

This time is notably not marked by one company’s great trek to find the next hot trend (although there is a bit of that as well). No, no..its about a quest..a quest to bring together top talent.

And who is spearheading these efforts, none other than @sakacc, the vGeek, the myth, author of some of the most influential blog posts in our tiny high-five community.

Side Note: You know it still amazes me when on a customers site that in passing I mention Chad’s site and his name is for the first time entering their ears (hence the post) ; )

Anyways its no secret that targeted intellect is becoming a formidable commodity in our neck of the woods. Any combination of VMware, EMC, and Cisco (VCE) experience seems to be flying off the shelf so to speak. That being said, the search is out, proliferation of the vGeek Squad is gaining momentum, if your interested and at the top of your game,  follow the directions here..and please follow the directions here…

More details on EMC, Cisco open positions…

Now, who are the current/bygone casualties to Chad’s Squad of Squads? See below..Here is my current count, who am I missing? And don’t get me started on VMware’s recent pluckin’s…

@edsai – “The Squad” member? Need to verify

@CXI - “The Squad” member? Need to verify

@scott_loweConfirmed

@rick_vmwaretipsConfirmed

@johnavery - Confirmed

@daverdfw - Confirmed

Oh..and if the halls of EMC aren’t for you, but you still possess the enthusiasm, passion, and love for this crazy VCE stuff and beyond, then reach out to another like-minded individual…ME! Tweet (DM once added) me on twitter, @virtualtacit, for information on positions we (Varrow) are hiring for here in the Carolinas. Happy hunting no matter which route you engage in…our community needs you..Step out of the shadows and make a name for yourself.

Its only you against yourself, my friends..

 

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Tuesday
29Dec2009

Battle Ponderings: Year in Review (Y1)

Wow, what a year! Some great partnerships are made public, “Cloud” is no longer a dust bowl term of ambiguity, and M&A continues. Not to mention on the home front, Varrow rocks the Casbah with a number of accolades. Its no doubt IT budgets in general were depressed but you would have barely noticed depending on the sector of IT you were in, namely storage and virtualization. So here are some notable moments in no particular order…

  • vSphere 4 Released-The long awaited vSphere 4 was released to the wild back in April to much acclaim. VMware’s fourth generation enterprise server virtualization product has made cloud its target, touting there is no better way to get there than with ESX under the hood. Larger maximums, thin provisioning, Distributed Virtual Switches, robust storage API’s for third-party integration, and Fault Tolerance are among some of the new additions to this stellar accomplishment.  
  • VCE Partnership publically established, birthing Acadia-Campaign to righteousness, all hail the ever knowing Virtual Computing Environment coalition. Why not? why not collaborate to bring referenced architectures to the people and a seamless support experience to boot. Of course I speak of vBlock’s and Acadia, more info here, Hot to the Touch: The #VCE Coalition. This really is a great way to sprint into 2010, more on this topic to come.
  • Varrow Receives EMC Mid-Market partner of the year – Truly remarkable, just goes to show you “size ain’t sh#@”. Put any number of like minded, passionate individuals together and look out world. Just in case you don’t know, “..the partner of the of the year award recognizes valuable partners who have exceeded joint sales and business goals, achieved significant market penetration, an provided superior support throughout the year”, that’s nationwide BTW. Thanks EMC for your faith in us! And trust me, there is no brighter star to hitch your wagon to than the fine individuals at EMC, how can you not succeed!
  • Varrow Makes FAST 50 in the Triad Business Journal – They just keep coming you know? The FAST 50 recognizes 50 of the fastest growing private businesses in the triad area. For those that missed it, here is the snapshot from the biz journal. Another huge accomplishment for us. With these acknowledgements come a lot of blood, sweat and tears. You can guarantee in 2010 we will hit #1 (we came in fifth btw)
  • EMC buys DataDomain, bitch slaps NetApp in the process- Sometimes its just a matter of principle and frankly NetApp has an uncanny way of choking on acquisitions, so it was in Data Domain’s (and the shareholders) best interest to be acquired by EMC. Data Dedupe is all the rave, and although both companies at the time had competing products, building a portfolio of products for a particular technology has long been EMC’s approach. Looking for source based dedupe? They gotcha with Avamar. Scouting for target dedupe? In like flynn with DataDomain. Intent on dedup’ing your NFS and CIFS data? Say hello to the Celerra. Its clear (according to my data domain partner bulletin) that dedup is no longer a “feature”, its there in high-end and low-end arrays, primary, near-line and archived data. Its now a baked in, bona-fide, “it”? Come on, its a feature..how else do you subscribe it?
  • EMC RecoverPoint-Your neighborhood replication engine – For those that don’t follow this blog regularly (u should : ), RecoverPoint is a heterogeneous block based replication solution. It works with the vast majority of arrays out there (not just EMC), its out-of-band appliance based, with dedup and compression to boot. CDP is the surrounding industry buzzword meaning Continuous Data Protection, the ability to capture every write to a LUN with transmission being async or sync. It truly is one of the marvels within the replication arena and assured to gain increased traction in 2010. Personally we have done a number of implementations across NC and VA, ALWAYS to 100% customer satisfaction. I have done a far amount of blogging on the subject to say the least, so if interested please visit here. With supporting products such as Axxana, and VBlock replication just around the bend this product has no where to go but up.
  • The long awaited FAST is amongst us – ILM reincarnated + automation as I mention here, EMC FAST for Clariion in 60 Seconds or less, is the essence of this technology. This revival of storage tiering couldn't come at a better time. With data consumption growing at a staggering rate, the ability to automate data migration from one Tier to another, especially with the advancements in LP, Spin-down and even SSD technology, is a must. Although not really first to market, depending on who you talk to, it is as far as I know the first to support multi-platform (V-Max, Celerra, and Clariion).
  • FCoE is impacting DC’s more that originally thought, or at least conversations – At a time where “Data Center” technologies are king, FCoE has become the enabler for network/storage convergence. Very much likened to iSCSI, FCoE forces a host of advancements to the forefront, namely Data Center Bridging (DCB, or CEE or DCE), which in short provides a lossless transport in support of LAN/SAN confluence. Cisco led the industry stampede to this transport and clearly is benefitting the most at this juncture. Sometimes being first to the party has its benefit..
  • Twitter is the Social Media Titan 2009 is the year of Twitter. From would-be presidents to current presidents, to actors, to techies alike, Twitter and its infamous 140 character limit is very much mainstream. Relax your social media gag reflex and make the plunge if your not among us tweeples, although I would bet all of my followers <wink, wink> are indeed followers, right? Well, If you still don’t get it, check out the 5 phases of Twitter, shorthanded below or Twitter in Plain English.  In 190 characters <where is TweetShrink when I need it>, Twitter is all about entering and leaving streams of information, you can’t be in the know for all of it, but be patient the information you happen to get locked into is invaluable and free!
      • What the hell is this?
      • Oh cool. follow follow follow
      • Hey, I’m semi-popular
      • Stop spamming me
      • What did you say? I missed it.
  • Cisco drops A-bomb on industry as a whole.. – I’ll admit, my knowledge of UCS (Cisco’s Unified Computing System) is still in “back swing” mode. But I have seen the ripple effect across the technology landscape. Designed from the ground up with the intent of underpinning current and future cloud initiatives, UCS is NOT your average blade system, that is clear. This is your next generation Data Center platform, providing compute, storage, networking and virtualization all within a SPoG united framework. In one massive swoop Cisco has reinvented itself, challenged its deep partner relationships, and shaken the industry to the core. Go Cisco!
  • EMC cherry picks partner talent and then some – Lets see, @DuncanYB and @ClineK casualty’s of VMware’s siren, @CXI, @scott_lowe and @edsai all swept up by EMC. This is a serious amount of cerebral muscle coming aboard an already stacked international squad. And with the #VCE partnership coming on strong, the writing was on the wall in a non-doom and gloom, non-idiom sort of way (?). Needless to say an @sakacc army was forming it seems…not really sure what to think of it beyond positive ju-ju for the entire ecosystem.

Well there you have it my faithful followers, the second installment of Battle Ponderings (from weekly to yearly-man I sux) I have truly enjoyed the last year we have spent together, you made me stronger, the technology keeps my fuel packs lit, and well the rest <pause> will be blogged or tweeted about.. : 0 )

Happy Holidays Everyone! See you in the year of opportunity, lets shoot high!

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Tuesday
22Dec2009

Is the Future of #vBlock Replication, #RecoverPoint?

I’d like to think so or perhaps its written in the stars already (hence the image) …but has replication even been discussed? Sure there is a lot of talk about easing the transition from “private clouds” to “public clouds” but what about replicating internal private clouds 2 private clouds, clearly this is more approachable of a subject then the aforementioned. image

Why RecoverPoint?

Besides the obvious plus’s of which I have hooted and hollered over, these points seem to make sense…

  • Cisco fabric integration already exists, inline with VCE partnership
  • Clearly best of breed in EMC’s replication portfolio. vBlock consists of BoB referenced architectures.
  • One replication engine across all vBlock architectures.
  • R&D heavy, tighter integration with VMware and EMC product line

Help Please?

  • Will RecoverPoint futures include support for the Celerra line? or vBlock0 that is, or will we be forced to use Celerra Replicator? I am talking support for file based replication.
  • Will there be support for replication amongst the vBlock Infrastructure packages (ie. vBlock0 to vBlock1 to vBlock2)?
  • Will RP be a plate-able addition with each vBlock tier? Or mandated across each tier? Or will native replication hold its own?
  • Does this complicate vBlock architectures or not? Does this ease backend support for Acadia?
  • Are there “Cluster” configurations for individual vBlock’s? Is RecoverPoint the enabler for this capability?

To me it seems so obvious to include RP as part of these “vBlock-Replicated” configs, what do you think?

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Friday
18Dec2009

#EMC #FAST for #CLARiiON in 60 Seconds or less..

Fasting for FAST? Well there’s nothing fast about its introduction to market. But as the adage goes, Good things come to those who wait, and wait we have.

So what is FAST? Fully Automated Storage Tiering or another wards ILM reincarnated, with the difference being full policy driven automation that is…

  • Pool resources of storage

  • Define policy

  • Apply to an application

  • Let ‘er Rip-Sounds simple huh?


Is FAST one product?

No, FAST is a suite of products rather.  For the CLARiiON that includes FAST LUN Migrator, Navi-Analyzer, as well as Navi QOS. In conjuction with Navi analyzer, LUN migrator examines analysis information to target LUN profiles that would benefit from movement to Flash for better performance or movement to SATA for lower storage costs. The core mechanism behind this migration is Virtual LUN technology. Technology that has been apart of the CLARiiON line for a few generations now and has certainly proven itself.

FAST is configured via navicli, supported on CX4 arrays running FLARE 29 and Navi-Analyzer.Its important to note that FAST on CLARiiON’s is unidirectional meaning you can only migrate from FC to SATA disk or FC to Flash. Of course this only applies to CLARiiON’s, bidirectional movement of data is supported on the Symmetrix and Celerra line. And quite the contrary, this doesn't mean you cant manually migrate a LUN back to FC once the automated migration has completed. I am sure futures will change this one-sidedness, we can only hope..image

What to Expect..


Here’s the step-by-step approach (albeit high level) for CLARiiON CX4 FAST:

1.The measurement period for analysis of Fiber Channel LUNs is defined.

2.Analysis is run.

3.Results are assessed and migration of data to Flash and/or SATA is executed.

Futures..


Sub-LUN migrations are planned late 2010 as well as better alignment between FAST implementations across the various platforms (Symmetrix, Celerra and CLARiiON).

That’s it! Look I only got 60 Seconds…
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