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  1. #1

    High SSD disk latency on Dell R410

    We recently plugged in new SSD in some of our Dell R410 systems (integrated H200 controller). The drives we put into Dell hot-plug caddies were Kingston KC100 2.5" 240Gb SATA3 (SKC100S3/240G)

    We use those SSD drives in other systems like Dell R210 II and SuperMicro systems as well.

    The problem is that we see a lot of the files in the disk activity with a disk latency (Response time in Resource monitor) of around 30-50ms on the Dell R410 systems, where the other systems have 0-1ms.
    Surely this most likely comes down to the H200 controller, but how to process from there?
    The SSDs are connected to a SAS/SATA hotplug backplane.
    Last edited by ReverendX; 04-15-2012 at 03:26 AM.

  2. #2
    Join Date
    Aug 2010
    Location
    Prague, Czech Republic
    Posts
    403
    Do you use latest firmware for controller?
    Supportex.Net server management, full range of services. EU-based outsourced company. Since 1998.
    Outstanding quality for high performance projects; clustering and high-availability solutions, DDoS protection.
    Cisco/Juniper network management & deployment assistance. Network design and monitoring.

  3. #3
    Join Date
    Apr 2007
    Posts
    3,502
    Have you put the drives in other servers to ensure it's not a faulty batch?

    Also tried a different OS, drivers and firmware?

  4. #4
    Since the machines only got DRAC Express, we do not have any KVM possibilities unless ordered from the DC.
    How would I most easily go about updating the firmware? Is it possible from the OS or do I need console access?

  5. #5
    Join Date
    Aug 2010
    Location
    Prague, Czech Republic
    Posts
    403
    You can update firmwares from your OS. Go to Dell support and find your server by Service Tag(you can see it in DRAC). Select your OS and find latest firmwares with instruction to install.
    Supportex.Net server management, full range of services. EU-based outsourced company. Since 1998.
    Outstanding quality for high performance projects; clustering and high-availability solutions, DDoS protection.
    Cisco/Juniper network management & deployment assistance. Network design and monitoring.

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