philipms

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Everything posted by philipms

  1. My SATA2 x 4 HDs in RAID5 formation showed HDTach benchmarks that were jagged beyond belief. The performance should have been much higher than the 60MBs/sec I was seeing.. I contacted Seagate with my results. They emailed me a firmware upgrade for my ST3500641AS-RK 500GB SATA Harddrives with S/N beginning with 3PM-----. These drives came with a 12/20/2005 3AAE firmware as labeled on the drive itself. Updating harddrives firmware is not something that the end user would normally do, and hence they emailed me the upgrade (as it's not on their website) to 3AAH date 2/17/2006. To upgrade the firmware I unhooked all my IDE & SATA drives from the mobo and controller cards. I hooked up one SATA drive at a time to the mobo onboard SATA controller and booted simply to DOS with a floppy disk and ran the .BAT file they emailed me that I unzipped to a disk. I repeated this for all 8 of my drives, hooked everything back up and rebooted to WinXP. The great news is twofold 1) upon hooking up all my drives, I didn't have to reformat or reRAID anything.. all my data was still there on line. and 2) the benchmark results improved dramatically from 60/MBs to 160/MBs Simply awesome! here they are.. Once again, these are 4 Seagate 500GB SATA2 drives in hardware RAID 5 formation with a Highpoint RocketRAID 2240 controller card. The card supports 16 drives on 4 infiniband channels, and these results show the benchmarks for two of the infiniband channels (4x1 500GB) each with RAID5 setups. http://www.seagate.com/contact/index.html 1-800-SEAGATE (1-800-732-4283) hope this info helps someone else, best, Philip
  2. Is there software to find & partition the fast part of disk? For example, I have a Raid 5 setup with 4 drives and I'd like to find and isolate the fastest part of the disk into a partition that I only use for HD video capture & playback. The slow part could be used to capture audio, files, etc. I'm using WinXP Pro SP2 and I wonder if there is a PC program to do this? I read about this being possible with Mac software, which I'll list from the review below. thanks, Philip from the review of Rocketraid at http://www.barefeats.com/hard59.html USING PARTIONING FOR OPTIMIZATION One nice thing about firmware based RAID is that you can partition it easily with Disk Utility (since it is presented as a single virtual drive). That way you can isolate the slower section of the volume. I suggest when setting up a new RAID set (whether RAID 0 or RAID 5) that you format it as one partition. Then use either ZoneBench or DiskTester to sample the various zones of the volume. When you find out at which zone the READ or WRITE speed drops below your target, you can isolate that zone and the subsequent slower zones by putting them in a separate partition. http://www.intechusa.com/ http://diglloyd.com/diglloyd/software/disktester/index.html
  3. Hi, I understand the theories.. but which Disk Utility PC program is best for testing a HD and telling me beyond what GB are slowing performance? If I have a RAID 5 hd array of 1.5 TB, is my drive slower after the first 1TB of space? after the first 800GB of space? This being the storage review website, isn't anyone out there stripping large HD arrays beyond 1 TB and looking for ways to maximize speed? Are you partitioning? or just letting your arrays goes as one drive? What methods & software do you use? thanks, Philip