tag:blogger.com,1999:blog-4755664707565425900.comments2023-05-06T03:33:51.104-07:00Storage MeatTerry Mhttp://www.blogger.com/profile/18368896550741168548noreply@blogger.comBlogger90125tag:blogger.com,1999:blog-4755664707565425900.post-18092709492037089722015-08-31T01:48:23.523-07:002015-08-31T01:48:23.523-07:00Very good in depth input.
If you have created a re...Very good in depth input.<br />If you have created a revised blog post for this, please add a link to a newer version since this is now 5 years old.Baldeephttps://www.blogger.com/profile/01589783681011939491noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-56286640504303985552015-02-05T08:29:46.304-08:002015-02-05T08:29:46.304-08:00will it retain the original lun attribute?will it retain the original lun attribute?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-87715274431163812972015-01-27T07:03:29.124-08:002015-01-27T07:03:29.124-08:00Moving PV automatically erases data. Mirror on the...Moving PV automatically erases data. Mirror on the other hand copies the data leaving it to be reused in case you need to use it again. I myself like having a backup solution in case of mistake.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-22720748812118641722014-09-21T08:50:08.042-07:002014-09-21T08:50:08.042-07:00Online migration can also be performed by moving P...Online migration can also be performed by moving PV directly. Davehttp://www.storagetutorials.com/noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-85894907715950291022014-07-25T06:43:59.167-07:002014-07-25T06:43:59.167-07:00Items starting with a 6 are NAA format 6, the IEEE...Items starting with a 6 are NAA format 6, the IEEE registered extended format. This is what you see in a disk GUID.<br />The breakdown is:<br />6 | 24 bit OUI | 36 bit vendor sequence/serial number \ 64 bit vendor extension<br />This is what you get from SCSI mode page 83.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-72810746404687920472014-04-07T20:59:33.861-07:002014-04-07T20:59:33.861-07:00To expand on your "6 digits" that you ar...To expand on your "6 digits" that you aren't sure how it is generated on the AMS. I have analysed the serial numbers you have provided, cross referenced with information from https://community.emc.com/thread/179971, and come up with this formula:<br /><br />Serial Number minus the 3 leading numbers (8x0 in your instances) leaving the following serials: 43697, 42536, 42038<br /><br />Then add 3000 to these numbers and get the hex value.<br />43697+3000=46697<br />42536+3000=45536<br />42038+3000=45038<br /><br />Convert these to hex and we get:<br />B669<br />B1E0<br />AFEE<br /><br />Which appears to match what you have in your WWIDs<br /><br />If you feed this in you have a leading nibble which is the AMS level as you speculated, followed by the above 4 nibbles, followed by a 0. That is the 6 as far as I can tell. Also interesting that the AMS model can be determined from the first 3 digits of the serial number (from the EMC link above):<br /><br />730 AMS 200<br />750 AMS 500<br />770 AMS 1000<br />830 AMS 2100<br />850 AMS 2300<br />870 AMS 2500Chris Bennetthttp://dwarfsoft.com/noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-85764025348172105302014-04-07T20:23:55.971-07:002014-04-07T20:23:55.971-07:00From my own investigations I believe that the 015 ...From my own investigations I believe that the 015 is due to the first batch of serial number for enterprise has to be stored in a 16 bit sequence (the 32ae after the 015). Therefore the 1 is a carry on the high bits from converting 78510 to Hex.<br /><br />Part of this is covered for NAA 5 format WWNs in HDS Knowledge Base article KB15062.<br /><br /> The “ssss” portion of the Port WWN IHHHHHHTOMSssssP can be calculated by the following: Add 70000 (Dec) to the last 6 digits of the DF850 Serial Number.<br /> - Translate the above value to Hex.<br /> - Remove the upper 1 digit (which is the “S”).<br /><br />Having only Serial numbers lower than 0xFFFF I have no way of testing this though.<br /><br />Thanks, Chris.Chris Bennetthttp://dwarfsoft.com/noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-26751759023754000782014-03-10T08:22:28.553-07:002014-03-10T08:22:28.553-07:00Martin,
Thanks for the information - I'm tryi...Martin,<br /><br />Thanks for the information - I'm trying to understand which part(s) don't fit. If I break your string down I've got:<br /><br />6 0060e8 01532ae00 000132ae 0000010c<br /><br />I'm expecting 015 to be 005 instead - so that doesn't fit, but 0x132ae is decimal 78510. Is the LDEV 01:0c, or is that wrong?<br /><br />With regards to the 015 - would you mind sharing what microcode you're running? It may have been changed in later versions.<br /><br />Thanks!<br />Chadchadwickhttps://www.blogger.com/profile/04727175217279747418noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-41721330678134850422014-03-02T23:46:19.720-08:002014-03-02T23:46:19.720-08:00Comparing this to a string that I found in my conf...Comparing this to a string that I found in my configuration: naa.60060e801532ae00000132ae0000010c -<br />this document don't fit. This string is taken from esxi 5 using a LUN from a HDS USP-V serial number 78510malohttps://www.blogger.com/profile/03671006343777054184noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-77801246812692300392014-02-22T13:42:52.204-08:002014-02-22T13:42:52.204-08:00This is a great, quick, helpful article. However,...This is a great, quick, helpful article. However, I kinda wish you would've documented the steps to do it "correctly", i.e. with the volume unmounted, just to see what that looks like. I'm pretty sure you can skip the whole "lvremove" section if you umount the volume first.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-38245723629146979382013-09-11T09:58:21.521-07:002013-09-11T09:58:21.521-07:00This is very cool! Thanks for sharing.This is very cool! Thanks for sharing.Anonymoushttps://www.blogger.com/profile/09024675425812174935noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-29460575657166037532013-04-19T19:43:18.626-07:002013-04-19T19:43:18.626-07:00Ganesh,
Thank you for your question. I am diggi...Ganesh, <br /><br />Thank you for your question. I am digging up my notes on this as it has been running in the environment now for quite some time. This should probably be a part 2 post, but for continuity I’ll post as a reply. Also note, there may be a different methodology to use with more current FOS releases. <br /><br />We chose not to do Virtual Fabrics in this case, because the client did not want to take the risk to reboot the fabrics to enable VF, and was concerned about creating a complex environment to manage for his successor(s) when he moved on. <br /><br />For this environment, our XGE ports plugged into Nexus 7K core switches. We separated XGE0 and XGE1 on separate VLANS across the Nexus core, for redundancy. Each of the DCXs had the FX8-24 card, so we had (4) XGE links into the core at each site. Our storage replication VLANs are separated so that we can, though routing at the core, and traffic isolation zones on the DCX, control which of their WAN links we push data over at any given time. <br /><br />First step was to enable FCR (FC Routing) service using “fosconfig”. We also chose to disable all VE ports while configuring the tunnels. We configured the VE ports at the secondary site, and the VEX ports at the primary site. Next, created the FCIP tunnel, and then added additional circuits to it. Circuits are created when you assign multiple IPs to a XGE port before you create the tunnels. After tunnels are created, we enable the VE ports. <br />After verifying the tunnel connectivity, we layer on the LSAN zones and TI (Traffic Isolation) zones to accommodate our design goal.<br />Justinhttps://www.blogger.com/profile/13999440637884152758noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-57783607796824647022013-04-18T14:24:53.575-07:002013-04-18T14:24:53.575-07:00Hi Lumenate,
I am designing the same setup with D...Hi Lumenate,<br /><br />I am designing the same setup with DCX8510-8 and FX8-24 blade. WE have virtual fabric enabled and using Xge ports for FCIP trunking. Could you advice how exactly you design your FCIP and routing ? ( VE or VEX ports ) <br /><br />GaneshAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-84704629543105455772012-08-27T01:39:00.525-07:002012-08-27T01:39:00.525-07:00this is what i was searching for many thank dudethis is what i was searching for many thank dudeAnonymoushttps://www.blogger.com/profile/08859083280001822641noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-83116187340660481112012-08-02T23:27:59.081-07:002012-08-02T23:27:59.081-07:00Nice One Dude.
Sasy.Nice One Dude.<br /><br />Sasy.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-55698175671273426062012-07-13T12:05:52.596-07:002012-07-13T12:05:52.596-07:00I still cannot believe how terrible Hitachi softwa...I still cannot believe how terrible Hitachi software is. It borders on unusable.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-84604218524496424802012-07-06T00:10:44.692-07:002012-07-06T00:10:44.692-07:00Thank you for blogging this, we hit the exact same...Thank you for blogging this, we hit the exact same problem and fixed with the method 3.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-4822142492004982452012-04-29T15:26:49.095-07:002012-04-29T15:26:49.095-07:00Dan,
The data was collected using the Performance...Dan,<br /><br />The data was collected using the Performance Monitor tool - you can get a look at it through Storage Navigator, or export it to .csv files using a java program provided by HDS. In this case I exported it and graphed it in Excel. Documentation is availabled in the Product Documentation Library (PDL) for the array, and you should be able to get the Export Tool from your HDS CE (it's dependent on the microcode version).<br /><br />To automatically document the AMS I'd probably use the SNM2 CLI - There's a pretty good list on tuf.hds.com here: https://tuf.hds.com/gsc/bin/view/Main/DFPerformanceData. Alternatively you can rely on Device Manager - just make sure that everyone in your shop either uses it exclusively (or refreshes after any changes).<br /><br />I haven't found any one tool that does everything well for performance data collection and analysis - it's a pipe dream to try to create that tool someday. If you're an HDS shop then TuningManager gets a ton of data, but it can be challenging to get exactly the report you're looking for. Over the years we've looked at several toolsets, but they tend to be either vendor specific or end up getting bought and shelved.<br /><br />Thanks,<br />Chadchadwickhttps://www.blogger.com/profile/04727175217279747418noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-36055864747405438312012-04-25T07:55:46.927-07:002012-04-25T07:55:46.927-07:00Hey Chadwick, nice post. I am just curious as to ...Hey Chadwick, nice post. I am just curious as to what software you used to collect and graph that data.<br /><br />Also, on a slightly related note, do you know of a program that can be used to document the AMS? I cannot believe there is not an automated way to document a SAN but I have yet to find it. I really want to get away from manually maintaining an Excel spreadsheet!<br /><br />And finally, what would you recommend for performance data collection and analysis? I'm using NetApp's Balance product right now. It's ok but the reporting leaves a lot to be desired.<br /><br />Thanks!<br />DanVirtualDanhttps://www.blogger.com/profile/09762432521437715598noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-5878723714084952612012-04-18T09:31:14.436-07:002012-04-18T09:31:14.436-07:00Pity though, that the UNMAP command has to be turn...Pity though, that the UNMAP command has to be turned off in vSphere 5 due to performance issues caused by it. When creating/deleting vmdk`s from the vSphere client, the responsetime of our 3PAR F400 array goes up into the 300+ms depending on the size of the disk created. We have UNMAP turned off at the host side now, which sucks because now i have to manually zero out the free diskspace of the datastores when vm`s are deleted or SvMotioned.<br /><br />Even more strange is the fact that HP support wasn`t able to figure this out, i ended up resolving the issue myself and pointing them to this fact. As of yet there is no ETA on a fix for this issue.....<br /><br />Sources:<br />http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2007427<br />http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=2009330AJnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-25929049767820376742012-04-13T20:51:06.777-07:002012-04-13T20:51:06.777-07:00Anonymous,
Good point - just a couple of comments...Anonymous,<br /><br />Good point - just a couple of comments. It would be more accurate to say that you're doing raid 0 in front of (or on top of) RAID-5, since HDP is on top of the traditional RAID group configuration.<br /><br />Also, the HDP mechanism makes it possible to spread multiple hosts across a shared pool of drives, something that is non-trivial with software RAID.<br /><br />Prior to the advent of HDP we would present devices from the RAID groups in a round-robin fashion, and then use VERITAS Volume Manager to stripe across them, trying to achieve a similar result ("plaiding"). It worked, but had to be maintained over time by moving subdisks around at the host level as you grew the array, managing hot spots, and so on. It also required planning the number of columns in the software RAID, since (at the time at least) you had to grow in even increments.<br /><br />Finally, with regards to the RAID penalty, you can't compare software RAID-5 (without a write cache) against hardware RAID-5 (with a write cache). Having sufficient cache allows you to mitigate the read/modify/write penalty (depending on workload, cache size, etc.).<br /><br />I think that there's still an argument to be made for host-side volume managers, in that they allow you to abstract file systems from the underlying devices - but when it comes to leveling out device utilization in a storage array I think that the array-based wide striping is compelling.chadwickhttps://www.blogger.com/profile/04727175217279747418noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-33630293485815390692012-04-12T09:35:25.397-07:002012-04-12T09:35:25.397-07:00Hum just a question about that,
I mean under your ...Hum just a question about that,<br />I mean under your hdp pool you still have raid array.<br />So even if you make stripe with hdp pool you still have the raid penalty.<br /><br />So actually your hdp pool for me seems like a software raid0 behind hardware raid.<br />Actually i'm pretty sure i can make a comparison between an hdpool and a raid 50 for exemple and have the same performance result no?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-8364786005976183832012-03-05T02:37:47.868-08:002012-03-05T02:37:47.868-08:00Nice OneNice OneTopeednoreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-21790307695819640292012-02-23T03:05:55.512-08:002012-02-23T03:05:55.512-08:00merci beacoup pour ces notesmerci beacoup pour ces notesUnknownhttps://www.blogger.com/profile/15666420623055981895noreply@blogger.comtag:blogger.com,1999:blog-4755664707565425900.post-76715212494740086232011-10-27T08:53:03.141-07:002011-10-27T08:53:03.141-07:00I'm glad you liked the post and sorry it has t...I'm glad you liked the post and sorry it has taken me so long to respond. Over a month - wow! In any case the answer to sustained MBps is a bit complicated and worthy of its own post, which I have been working on. You can expect to see the post later today and thanks for the great question.Terry Mhttps://www.blogger.com/profile/18368896550741168548noreply@blogger.com