Mad hatter

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Everything posted by Mad hatter

  1. Mad hatter

    Those Raptors sure are hot lil buggers

    Google's recent study about hard drive failure rates has received a fair amount of attention, but the folks at StorageMojo have found another study that also shows some very interesting results. The study, which was conducted at Carnegie Mellon University and is available here, covers a sample size similar to that of the Google studyÑaround 100,000 drives. While Google looked only at desktop hard drives, Carnegie Mellon covers failure rates for both desktop Serial ATA hard drives and workstation/server-class SCSI/FC hard drives. Regarding the relationship between the two, the study says, "Interestingly, we observe little difference in replacement rates between SCSI, FC and SATA drives, potentially an indication that disk-independent factors, such as operating conditions, affect replacement rates more than component specific factors." The study also says failure rates increase in a fairly linear fashion with drive age, suggesting drives simply "wear out" over time. I read about SMART studies done by Google here: http://forums.storagereview.net/index.php?showtopic=24659 http://techreport.com/onearticle.x/11890 http://techreport.com/onearticle.x/11872 http://storagemojo.com/?p=383 http://www.usenix.org/events/fast07/tech/s...html/index.html http://www.techworld.com/storage/features/...samecatsamechan http://labs.google.com/papers/disk_failures.pdf But running on passive cooling....? ouch! :-(
  2. I wonder if putting the system on the 750GB drive would make sense, and then use the Raptor for pagefile partition, and for scratch, which I think it would be well suited for, if you need 80-100GB scratch area. I use a smaller Raptor for a couple of things, pagefile being one. There have been a number of discussions about ideal setup for Photoshop, drives, amount of memory.
  3. Mad hatter

    Those Raptors sure are hot lil buggers

    My Raptors run as cool as any drive, but... there are kits that don't support them, and you do need some decent ventilation usually. I've seen Maxtor MaxLine Pro and Seagate drives run hotter. I'd rather see you using something more study with larger fans and power, like Sonnet's Fusion 400 or 500P. Or SeriTek if you plan on using them as I think you intend, for editing and scratch, and probably stripped RAID.
  4. I keep seeing recommendation on MS to do clean install rather than upgrade; and if you have 32-bit and want to go 64, that is totally different and can't be "upgraded." I suspect that going from 64 to 32 is also problematic. Sometimes the issue is minor or doesn't seem related, and the system may work fine but just not support some feature. Moving from one OS to another, I would want to have each available just in case and run parallel if need be until 64-bit drivers or something are out. Was it with an update version? In order to get 64-bit version for anything other than Ultimate either $17 to 'order' the 64-bit DVD, or I'd pick up OEM from Newegg.
  5. Mad hatter

    Need help buying harddrives +setup

    Performance-wise, the Raptor is excellent. But to my ears, there is a high-pitched whine on the new 74GB that wasn't present with the older version, so I pulled it from my very quiet new MacPro (Xeon 4-core Woodcrest). SilentPC liked the WD Caviar SE16 500GB as very quiet AND excellent in performance. I don't mind some noise from a disk drive, but the "hum" or a constant pitch can be annoying. Isolating one drive for OS etc and 2nd for high-volume quick access makes sense. There are times when a boot RAID works for some. As long as they understand and can restore the system easily. Mostly where you don't have a dedicated scratch disk to work from and are using the boot volume for scratch also for Photoshop. General "consensus" is RAID for boot is a "no-no" though
  6. Mad hatter

    Raptor OS/app/scratch choices, help!

    Photoshop scratch - use the two 74GB Raptors. 150GB as boot OS/Apps and paging, how many pageouts anyway with 8GB? unless you are doing large complex 1GB+ files in Photoshop. There have been some discussions on Photoshop RAM/RAID/Scratch.
  7. Mad hatter

    Bios virus?

    I ran into trouble after installing Vista RC1 that required zeroing the drive, removing the Master Boot Record (boot block?). I was seeing a lot of services like "Windows Sharing" and ports being opened and remote login allowed. I had to tighten down all of those services specially in the router, out AND inbound to get back in control as well to prevent it happening again. And I don't know where or how it happened. I first noticed it when trying to setup a new laser printer would only work if printer sharing was enabled. All of these 'services' could not be stopped, and if turned off, would re-enable on their own. I thought at first it was the Lexmark driver doing so and started working with their people but they assured me - and I have now confirmed it isn't from them. The printer is now configured fine, but at the time, if a couple services were closed/blocked the printer would fail in setup configuration. And there were the ssh attempts in the log for firewall. I've used computers for decades and never been so freaked or scared that "something" seemed to take control of my system.
  8. eSATA is still SATA and refers to the type of (external) connector. Sometimes you will see "type A" connectors which can get loose or slide off. I pulled an SATA 7200.9 drive to put in SATA/FW800/USB2 case that does not use the "eSATA" connector but still offers an SATA and FW800 interface so I can move it easily between systems. ATA (FireWire) means one drive per channel to get true RAID performance. Not an issue with SATA, whether one drive per channel is norm, or using Port Multiplier (up to 5 drives per channel sharing 1.5 or 3Gbps bandwidth).
  9. Using SATA in USB would not be my first choice. FW800, yes. Mostly it depends on the bridge they use and of course the firmware (on the USB bridge). But if it is for SATA drives, then there is no master/slave and only SSC and jumper for 1.5 vs 3.0Gbps modes. The Oxord 924 bridge supports SATA-USB2-FW800 and FW400, but you'll pay for that convenience. It will also support full SATA performance.
  10. Not all cases are equal when it comes to cooling. I use half a dozen FW800 individual drive cases, but if you are doing something that would put a heavy strain (sustained I/O for an hour or more) they can over-heat. More so with the cheaper dual drive boxes often sold as "RAID enabled firmware" using something like Oxford 922 bridge. Also, if you want real RAID performance, that usually means adding FW800 controller(s). Any reason for not using an SATA setup?
  11. Mad hatter

    Fastest Boot Drive - Non-Raptor

    Having used 74GB Raptor, 15K Atlas, and a couple SATA drives... I would get 300GB 16MB cache Maxtor or WD. RAID can work well in some systems, but you'll get scolded and lectured from nay-sayers on the topic of RAID. I prefer either the Raptor or RAID a pair of 7.2K drives (and the Raptor has a high-pitched hum/whine pitch to my ears that makes it annoying if you have a near-dead silent system.
  12. Mad hatter

    Professional Hard Drive Sanitizing

    Can't you just use a large magnet? Maybe you'd have to rent or take it somewhere... sort of like bulk erase for old tape cartridge or cassette?
  13. Mad hatter

    SATA II 3Gb/sec RAIDS, 2 bay, 5 bay & 10 bay

    Sounds like an ad, rather than review etc or a question, something for Marketplace? SATA Port Multiplier offers 5 drives per channel, 20 drives on 4 ch card, and suitable for HD video editing.
  14. Mad hatter

    Samsung Kingston Corsair Micron, how do I know?

    it is in the details? Even Micron/Crucial has variations at times in batches, and there can be problems mixing RAM from same or different vendors definitely. Voltage, latency, timings. But in your example, I would be more concerned with the parts used to assemby the board, noise, leakage. Not all Micron memory is probably the same either. Some doesn't pass the first test, so it gets rejected and sold on open market. Will it tolerate heat as well? does it over-clock or accept modifying voltage, timing, etc? Always interesting to see what type of punishment reviewers put memory through. And ANANDTECH
  15. I used mainframes, too, but that isn't what I use now. I use what I like, not what I was forced to use. Because paging is always going to be slower than RAM, I am surprised that 512 is enough, or that you think you need to RAID the 36s. Comparing Raptors maybe? I think, having used the original and some current 10K and 15K drives, that you might find using a single drive, or outer tracks probably, to be as good or better than the RAID setup you used or plan to implement. Most, I would try a non-RAID for awhile. I keep going back and forth, and right now found that four non-RAID drives (all same size) is 'smoother' and faster and better optimized - for me. yes, different operating systems have different characteristics, but tracks, sectors and cylinders don't change. I use to have to code databases to use certain sectors and cylinders, that and tweak the OS performance over our "DASD farm."
  16. Try your 150's 'as is' first. yes, there is logic in my madness. I think the "should I RAID for home gaming machine" faq comes to mind as a start. Barefeats @ http://www.barefeats.com did some tests on boot time, launching files etc and found no difference or improvement in RAID'ing Raptors, 15K SCSI etc over a good logical non-RAID setup. A dedicated 10K/15K boot drive - not RAID - works.
  17. Upgrade the RAM first and foremost. Try using one of the new Raptors for OS/Apps/Games. If you must, use the outer 4GB for swap. Use the 2nd Raptor 150 for your games, data storage whatever. the new 74GB 16MB cache Raptor is out now. You could buy three of those for the price of two 150s One disk per 'task' means one disk, not sliced raid partitions. My current setup is 2GB RAM, 15K Atlas boot drive, a pair of 10K Atlas for data documents, downloads, storage and works nicely. I got this SCSI setup before SATA was really a good option and it is easier to just replace with newer Atlas drives than Raptors, otherwise I would be using 74 or 150 Raptors . I did use 36GB Raptors 3 years ago during testing, they came across as 'okay' but not enough to replace what I use.
  18. Mad hatter

    Speed of Software RAID-5

    There is just one drive per channel, right? you aren't trying to use two drives say on one channel?
  19. One more on Addonics from AMUG Port Multiplier 5x Sonnet E4P http://www.sonnettech.com/support/faqs/serial_ata_faq.html http://www.sonnettech.com/product/tempo_sata_e4p.html MacGurus Port Multiplier Guide http://www.sata-io.org/portmultiplier.asp
  20. Mad hatter

    How to setup RAID as a newbie?

    If you look, Zipzoomfly now has the 16MB cache 74GB version $174 in stock, or the older 8MB for $155.
  21. Mad hatter

    Raptor or 15k SAS drive as boot

    I just noticed that ZipZoomFly has 74GB Raptor w/ 16MB cache. $174 - out of stock. Looks to be the newer model, WD740ADFD.
  22. Mad hatter

    Removable hotswap SATA drive trays

    Sonnet controllers: http://www.sonnettech.com/product/tempo-x_esata44.html MacGurus SATA Enclosures: http://www.macgurus.com/productpages/sata/SATAEnclosures.php LSI MegaRAID SATA: http://www.lsilogic.com/products/storage_adapters/index.html
  23. Mad hatter

    Backup Solution Recommendation

    External SATA hot-swap. Rack or tower. With each drive in its own tray. Then there is SATA controller with support for port multiplier where you can run 1-5 drives off one channel, 4-channel and up to 20 drives. And using hot-swap drive trays. There have been a number of reviews of various controllers and drive cases, including rack-mount. I would choose SATA over FW800 (I am running off FW800 right now) given a choice.
  24. Mad hatter

    SATA vs. PATA today

    My understanding from a couple people, not just one, was that using a PATA with a bridge (there are a couple so you can use your old or existing PATA drives with a new SATA controller) shows the drives perform better than when on ATA-6 bus. And of course many early SATA drives weren't "native" but used a bridge built-on. so just anecdotal and no hard benchmark.
  25. Mad hatter

    Raptor VS. Mau3147np

    I started using a RAID 0 on Atlas 10K drives 5 yrs ago for data, played with RAID0 for boot volume, never had a problem with the drives, Atlas 10K II, III, IV and 15Ks, plus Cheetah X15.2 pair. there was a period when Mac OS X 10.0/1 wasn't up to the task, but been fine now for over 3 yrs. I had to break a RAID once to reformat the drives, and I think that was due to "operator error" and maybe beta driver. I can't afford to buy large enough 73GB drive right now, and the 10K IVs perform like I want. My system is noticeably faster and smoother in operations. I wouldn't give up 15K boot drive unless someone gave me an SATA controller and Raptors. Hopefully I'll find an opportunity to get some new Atlas drives though until that happens. ;-) I've tried 7.2k drives and I use them for one thing: backups and where huge DVD archives are concerned. it 'works' but you can tell it isn't as responsive. And maybe its how OS X system and my needs rather than hardware or "impending unreliable risks" or something.