3 ms·

I wonder if 324 on Lustre would have more throughput than a 1 4TB disk?

• enigmo 13y ago
  Definitely... and _way_ more IOPS.
• fsckin 13y ago
  They would be leaps and bounds faster. Especially comparing random IOPS. Let's just assume they were using a Seagate Cheetah 9LP. That's a 9GB, 10k RPM, 1MB cache UW SCSI disk that was widely available in 1998, for a whopping... $1200 each. $390,000 worth of disks... wow. That could buy 1300 * 4TB SAS drives today with a total raw storage of 5.2PB! 324 * 9LP's would have around 5.5GB/sec of total read/write throughput. That easily beats a single 4TB disk with around 200MB/sec read/write performance and terrible IOPS in comparison to even a single 9LP. SSDs compare much more favorably here. 10 x 1TB SSDs for ~$6500 could easily reach 5.5GB/sec throughput and triple the capacity of the 324 x 9GB drives.
  • mariusz79 13y ago
    You're comparing off-the-shelf disks to enterprise-class storage.
    • theatrus2 13y ago
      "Enterprise" 4TB disks don't have orders of magnitude more IOPs than consumer versions.
      • mariusz79 13y ago
        But they are more expensive, so for comparison to be right one needs to take that under consideration.