Quindor

Member
  • Content Count

    111
  • Joined

  • Last visited

Posts posted by Quindor


  1. Your smartctl version is too old for scterc. scterc was only implemented on revision 3065, you're on 3060.

    Yeah, that was my conclusion too. I directed him here from another thread, I believe he is working on it and will reply his results here! Has has never used SVN building before (which I had not also, before smartctl).


  2. Hello all. I'm looking for a PCIe card with 2 eSATA ports that supports hot swapping. This card will be used on a new Dell Power Edge R210 server, running Windows 2008 R2 x64. That's it, pretty simple, I hope...

    Thanks for looking!

    Jnuw

    The VERY VERY cheap and dirty solution : http://www.addonics.com/products/host_controller/ad2sa6gpx1.asp .

    Not sure what you are wanting to do with it and if you would wish to use something like this in a business situation or not, but still.

    But sure to read the limitations. This card has shared bandwith (not non-blocking) and also should be used on a PCI-E 2.0 port if you wish maximum performance.


  3. So I have to use the Windows 7 RAID1 support. Will smartmontools work on disks that are in Windows 7 software RAID? I did not find any information about this in smartmontools Wiki or smartmontools documentations.

    Sorry for the very late reply. Not been around much lately, busy busy!

    Yes, WINDOWS software raid should not affect the ability of smartmontools. This is because you can still talk to the physical disk and thus you should be able to send commands to it directly. You might need to use their SCSI ID and not the drive letter, but that is a simple issue to solve. So if we are talking about say an intel ICH controller. No problem, software RAID or not. You need physical device access. The supported RAID controllers (like my adaptec) provide this.


  4. Hi,

    I am new here...

    I would like to ask help from the community if anyone has any idea on where I can find a test chamber that will test a PCIe SSD. I understand Flexstar Corp is one of the pioneer for having a test chamber on ODD, HDD, and SSD (either 2.5FF or 3.5FF) but I think they don;t have a PCIe SSD test chmaber.

    Thank you.

    ... I'm a bit at a loss here. What is a "test chamber" and what tests does it preform? See how the SSD holds up during extreme temperatures, etc.?? Heat should be faily easily to simulate yourself for instance.

    Please elaborate.


  5. Ah that makes sense, seeing that chart I dont see Adaptec even listed tough, not even for linux yet people on this thread are using it. I assume it is supported?

    I am actually the one using the Adaptec controller. ;)

    Since I use VMware ESXi 4.0u1 on my server, I also have no way of running smartctl from the OS I am using. For this reason I use a bootable USB stick with Fedora installed. Fedora and their adaptec drivers are configured in such a way that next to your data arrays, they also provide a "SG" of your disks connected to the adaptec controller, a feature called "expose physical drives".

    With that, you can access the SMART data as if the disks are connected to a simple controller and also preform actions on them such as the Smartctl SCTERC commands. And off course read other stuff out of the disks. I also use this to run my Adaptec ASM software, since there is no version for VMware ESXi. Works great, if you do not have to powerdown your server too much. It takes about 5 mins in total to boot from the stick, set the desired commands and reboot into VMware ESXi.

    I know of no other way to get around this using windows, or even any other linux distribution for that matter. Normally I'm more prone to use Debian or Ubuntu, but I could not get the switch to work for me. Not a linux expert though.

    Hope this helps you, let us know!


  6. Ah, well, I have had dozens and dozens of disks go through my pc's/servers over the years. I have been running a storage server for years and thus upgrade once in a while and try to double the capacity when possible. This started with 20GB disks and has now moved to 2TB disks. So I have had 20GB's, 60GB, 120GB, 250GB, 500GB, 1TB, 1.5TB and now 2TB disks in my server (server itself has changed hardware too but in the most recents years I have been using adaptec controllers, so you could call that a constant. ;) ).

    I've run from 4 disk RAID5's to 8 disk RAID5's. And have had some failed disks over the years.... treating them quite badly actually.

    I run the server 24Hr a day, for weeks on end, then shut it down, put it in the car, drive it to a lanparty, turn it on again for 48Hrs where the disks get trashed, turn it off again and put it back into it's spot where the disks spin again for a few weeks. Well, I can tell you, desktop disks (or any?) are not designed for that kind of usage. ;) Oh, and my cars mostly have subwoofers in the back too, where mostly the server would stand also. Never had any effect on it that I could tell.

    But, since I have 3 years warranty mostly, I got by pretty well. Especially Maxtor was my friend with their advanced replacement program! :D :D Most disks would take 1 tot 1,5 or 2 years of this kind of punishment, in all honesty, the average lifetime you would expect from the disks in power on hours and reads, but normally over much larger time say 5 to 10 years.

    Anyway, in all my time with all my type of disks and array's and everything, I have never!!! lost as much data as I did this time. I have never had so many disks just fail, for no apparent reason. And now a days my disks are in nice holders in chieftec hotswap bays, etc. etc.

    So no, I am used to having a much better experience. Just like you are from what I get from your story. Sadly disappointed and I am hoping the replacement disks won't fail as horribly too!


  7. Ok, I seem to have failed at the first hurdle.

    Installed SamrtMonTools (5.40-0-20100214-r3065) on Windows 2003 server.

    Have set up 3 Samsung 1.5TB drive as individual drive attached to the Nvidia SATA controller.

    Can see them in Windows, have initialised, and quick formatted - drives give latters, I:, J:, K:

    Run "Smartctl -l scterc i:"

    Receive the following error:

    Error write SCT Error Recovery Control Command Failed: Function not implemented

    Warning: device does not support SCT (Get) Error Recovery Control command

    Hmm, that's odd. That should work exactly as described.

    What did you set your controller to? It should be in AHCI mode for best result.

    Also, using your motherboard controllers RAID function will probably not give you the ability to use smartctl.

    But, using motherboard RAID is hardly or any better then using software RAID. Win2k3 does this fine, but consider Win2k8 R2... several great improvements! Also this will keep your array transportable between hardware, and also give you the ability to use smartctl! Win win situation I would think. Performance should be at least the same, you only forgo the ability to boot a RAID5. But create say a 50GB RAID1 (software raid, bootable) and then use the rest in RAID5. I've run like that before, works perfect!

    Let us know!


  8. Im trying to decide which drive to buy for raid... but ive been hearing alot of negative things regarding the samsung rma experience and according to new egg reviews they have a failure rate ranging from 3-4 months of use.. but they provide faster performance of 270mb/s versus the wd black 200mb/s but wd have a longer standing of reputation of reliability

    Not sure what to awnser here, I can tell you though that 270MB/sec or even 200MB/sec is not attainable with a single drive. So I am not sure which specs you are looking at, but they do not sound realistic.

    About the reliability I am also not sure what to say. WD's are good, but Samsung's are not supposed to be bad. Currently having some trouble with my raid set, but I have other Samsungs which show no problems whatsoever.


  9. There's an article with some benchmarks on Adaptec's MaxIQ system here

    http://www.tomshardware.com/reviews/maxiq-ssd-cache,2511.html

    You have to use x25-e's for cache though it won't let you enable it on x25-m's

    I'd test it myself but I only have x25-m's

    Tom's conclusion is about what you'd expect - so long as the working set is under the cache size the performance is great. The real question is what size is the working set of your average desktop, gaming, server, etc? It's hard to say.

    Nope. That was the old version.

    The new version has certified the X25-M's too and also you do not need to buy them from Adaptec anymore.

    This was announced at the Cebit and has since been built into the firmware from 2 or 3 weeks back. Also, more firmware updates should follow which will allow you to do write caching on an SSD as well.

    Personally I use my server for VMware ESXi purposes and I believe it could mean a great improvement for me!

    I have not tried the new firmware yet or have the SSD. But I believe it will be required to enter some kind of unlock code to enable the feature. :(


  10. Anymore specs or anything for us to go on here? Software RAID, Hardware RAID, SSD? Anything?

    Always good to share, but give us some specs and how you configured things, so others can learn from it also. :)

    Your speeds are a bit on the slow side I would say. A single disk should easily do 100MB/sec read and write at the beginning of the disk (Generation of 1TB disks or larger). So there might be something wrong, or there might not be. No clue....


  11. I too think this is a very interesting technology which will actually shape the storage to come in the next few years. I have an adaptec 5805 myself and am willing to pay for the SSD (consumer intel version), but don't want to buy the adaptec license for it.

    I runs a 7x5400 RPM 2TB array using VMware ESXi 4.0. Perfect enviroment I would say to see great SSD speed gains.

    Sadly, no key, no glory. :(


  12. IMG_4425.JPG

    Changed the fans on my Chieftec bays because the default fans are way way way too loud. Sure, they provide plenty of airflow, but I don't run 15K disks, but 5400rpm eco disks and some 7200rpm. Changed the fans, server is quiet again and disks (the 7200rpm's) only get slightly warm at best..... so cooling is still sufficient.

    Still very satisfied with the bays. Excellent quality. Please click the photo for the rest of the photos in the album.


  13. Just wanted to report that since the build one of the Samsung 2TB Ecogreen's has failed on me. Crashed my raidset multiple times and alarms everywhere!! :unsure:

    After being unable to find what was wrong I resorted to use the "full media scan" option inside of the adaptec controller. Scanning all the disks I found 1 disk that reported too many non-remappable errors. Bought a new drive, replaced the failed one, rebuilt the array and since then, no more problems! :D

    I'll send the drive for warranty and maybe use the drive I get back as a hotspare or for some other purpose.

    Further then that, everything is still working fine. :)


  14. A Western Digital RE4-GP (WD2002FYPS) server optimized drive?

    Euhm, that will almost certainly NOT be the right choice, since it's a 5400RPM disk with aggressive power saving tendencies (can be tamed a bit). You'll want a 7200RPM disk.

    Disks aren't made to write multiple streams concurrently, or rather, they can't. They can do two actions, either write sequentially and achieve VERY high performance, or, seek. Seeking costs time and during a seek, nothing can be written.

    Writing multiple streams at the same time means that the disks will HAVE to seek to keep up with each sequential part on the disk. Seek times are related to platter density but mostly to spindle speed. So a 5400RPM disk take 3 times longer to do a seek them a 15.000 RPM disk will. Thus giving the 15.000RPM spindle a higher random I/O, while not necessarily giving it a higher MB/sec.

    This is also the reason a 300GB 15K RPM disk can have the same sustained sequential transfer rate as a 2.0TB 5400RPM disk. The 5400RPM disk needs 3x the platter density to negate the 15K RPM's spindle advantage. The 15K will always win in seeks though, because it can just reach a certain sector faster.

    Anyway, I'm getting off my point.

    Since you are writing multiple streams and your software probably is not intelligent enough to mix these on disk (mixing them or separating them both have their advantages either for writing or reading) I'm going to assume that they are written into separated files in a non-fragmented way. That means you'll have to handle a lot of seeks while writing this so your spindle speed is important. Cache will also greatly benefit you as NCQ will.

    Which brand to take, that I can't really tell you. More cache is good, so the 64MB variant you mentioned seems like a good start! Also multiple drives can greatly enhance how many streams your able to handle, again in relation to the above story.


  15. I was just reading a report on Enterprise Storage Forum that pulled highlights from the upcoming (May 4th) release of the EMC-IDG Digital Universe study. Much of the commentary comes from EMC's Vice President and Global Marketing CTO Chuck Hollis. Hollis has some pretty standard takes throughout, but at the end of the article comes this little nugget on SSDs:

    I know the pace of technology is fast, but does anyone believe that capacity, cost and reliability will magically align in 4-5 years so that SSDs can replace tape for archiving? I can't tell if Hollis was taken out of context here or if he's full of marketing-babble-BS.

    SSDs need to catch HDDs first, and that seems unlikely in 4-5 years...forget about catching high capacity tape.

    Man... I really get sick of these big companies doing stupid announcements like this.

    Tape backup or rather backup itself (also use Disk, Diskstage and Dedup) is my daily job. Tape technology will be on LTO7 in 4 to 5 years. This is per normal roadmap. LTO5 was released about a month ago and is shipping currently, and new LTO tech gets released every 2 to 2,5 years. This means that a tape costing about 40$ a piece will hold roughly 6.4TB natively. Adding 2:1 compression this comes down to about 12TB. Normally I'd calculate with 1,5:1 compression, but with LTO6 they will introduce larger compression buffers which should allow for a bit better compression ratio (not the 2,5:1 they envision).

    So, this guy could also say that in 4 to 5 years we will have SSD's disks of 12TB which will cost you only about 40$. Now that would be awesome! :D ... sadly... I think that to be complete fiction.... and not even close to what the truth is going to be.

    Sure, SSD's are great now and will only become better. They will push forward tech like 6G SAS and SATA as mechanical HDD's are not pushing these limits and won't be soon.

    Personally, I think 15K and partly 10K spindle disks will bite the dust sooner. You will get hybrid arrays which use 2TB Data disks (5400rpm or 7200rpm) with a 2 stage cache in front of it. Let's say 4GB memory cache per controller and 1TB of SSD cache as a sort of L2 cache. ZFS already can function in such a way.

    So, going with EMC standards what I think we'll have in a few years:

    2x8GB memory cache (dual controller)

    10TB SSD L2 cache

    250TB SATA 7200 RPM

    Writes will go through SSD and cached read will also. This means your basically working on SSD but in the background it gets flushed to HDD. Actions can be streamlined (sort of advanced form of NCQ) and viola, the perfect, super fast, low response time solution.

    Doing Backup and Storage and also a bit of archiving. In almost all companies, looking at their array's only a fraction of their online data is actually used. So for a 250TB array, 10TB can hold almost all the data anyone in the company is working on. A lot of data gets stored and files grow bigger, but what is really being worked on.... doesn't change that much in size. Also, if you do this using a disk array. This technique can be applied block wise. A whole file does not need to be cached, just the blocks frequently used or being written. 7200RPM aren't slow, just not that good at seeking, so that needs to be cached.

    Anyway, I'm rambling now. Back to topic. I believe hybrid storage is the future. Dedup is getting important in the backup world, disk backups are fading fast and either used as a temporary stage for tape or being replaced for dedup storage. Tape is not dead, not by a longshot, neither SSD, Disk or Dedup hold the same advantages (yes, it also has disadvantages).


  16. Wow, very nice indeed!!! Having a 21TB server myself I especially can appreciate this project!

    Awesome little NAS system I'd say. I'd worry about cooling a bit though. The single fan could be enough, but it would produce noise, especially being so thin as he chose. Also, where is his intake and how does he ensure air passes between all the HDD's?

    Other then that, absolutely awesome indeed! :D


  17. Hi, this might sound like a stupid question but is it possible to have a buffer overflow of data on a SSD?

    I truely have no clue what you are talking about....

    Could you please explain your question? SSD's have no real Achillesheel that is very obvious. SDD's have advantages and Magnetic disks have advantages.

    So, please explain some more.


  18. euhm, euhm, euhm... AHCI?

    No, sorry. No clue. Could you give us some information on what kind of enclosure this is and maybe what kind of controller is inside (probably a jmicron or silicon image variant).

    GPUID should always be readable from Win2k8/Vista and up. No matter if you are running 32Bit or 64Bit I believe. Do make sure you are running the latest patches and service packs.

    Hmmm... what OS was the partition created on? Thinking it could also be somekind of driver problem. How do you connect the case? USB or eSATA?


  19. THERE HAVE BEEN (I HAVE PS110) PROBLEMS WHEN TRYING TO USE SOFTWARE(ACORNICS)AT USB 3.0.

    DO YOU KNOW IF THERE ARE SOME UPGRADING-SOFTWARE FROM SEAGATE WHICH HELPS TO SOLVE THIS GRAVE-I MEAN GRAVE!!!!!!-BUG.

    SEAGATE DOESNT ANSWER TO MY QUESTIONS!!

    THANKFUL FOR HELP!

    PS.

    ONLY REASON TO BUY THESE ARE FOR SOFTWARE!!

    From what I can read on the web, the software that is included with the drives is based on a limited and older version of Arconis True Image. If Seagate cannot provide you with an updated version, it might be your only choice to buy the full product from Acronis and thus have the newest version in which your bug (whatever it is, as you do not tell us, is fixed) or use an open source alternative.

    You do not specify what you are trying to accomplish. Myself I am quite content using clonezilla instead of commercial products such as Acronis in most situations.

    Writing in all capitals is NOT appreciated. Using several exclamation marks is also a bad way to use language. Both will put people off from answering you so you will receive less help. Please take this under advisement. A post such as you posted above is considered rude and dumb.