Oracle Big Data Appliance Hardware Frequently Asked Questions (FAQ)
(Doc ID 1541743.1)
Last updated on MAY 23, 2023
Applies to:
Big Data Appliance X5-2 In-Rack Expansion - Version All Versions and laterBig Data Appliance X4-2 In-Rack Expansion - Version All Versions and later
Big Data Appliance X4-2 Full Rack - Version All Versions and later
Big Data Appliance X3-2 Starter Rack - Version All Versions and later
Big Data Appliance X5-2 Hardware - Version All Versions and later
Linux x86-64
Purpose
This document provides answers to frequently asked Hardware related questions on Oracle Big Data Appliance (BDA).
Questions and Answers
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In this Document
| Purpose |
| Questions and Answers |
| Where does the Uptime Value in the ILOM start from? Does it reflect the time since the ILOM was reset or something else? |
| Is it also possible to get the Uptime Value using ipmitool? |
| Is there a "quick" way to verify if a service LED for a disk is ON, OFF, or flashing i.e. switching between ON/OFF, if you can not easily check on the BDA? |
| Is there a "quick" way to check if a disk has a predictive failure? |
| Is there a quick alternative to collecting an ILOM snapshot to verify a disk service fault? |
| How many Oracle Sun servers are contained within the Oracle Big Data Appliance (BDA) X3-2 Starter Rack? |
| How many Oracle Sun servers are contained in the Oracle Big Data Appliance X3-2 In-Rack Expansion? |
| Do the BDA Starter Rack and BDA In-Rack Expansion include the same software stack as on the Oracle Big Data Appliance X3-2? |
| What are the components per node of the BDA X3-2 Hardware? Is there any different between Full Rack, Starter Rack or In-Rack Expansion? |
| What are the list of components available for the BDA X3-2 Starter Rack? |
| What are the list of component available for the BDA X3-2 Full Rack? |
| Is the BDA X3-2 Starter Rack ready for cabling to any Exadata system? |
| Is the BDA X3-2 Starter Rack ready for Growth? |
| Is BDA 4.13 supported on BDA X3-2 nodes? |
| How is memory upgraded on the BDA? Is there a memory expansion kit? |
| Is a rolling memory upgrade possible on BDA racks? |
| How much does memory expansion cost on a starter or expansion rack? For 256GB? For 512GB? |
| The weight of the BDA X3-2 Starter Kit is 1037 LBs (= 470 Kg). Does this weight include the weight of PDU? |
| Inside the BDA does the hostname map to the 10GbE or InfiniBand Address? |
| What is the recommended way to test IB failover? |
| Can memory upgrades be applied to a subset of nodes on the BDA, or is it all or none? |
| What is the cause for 'INFO: Errors reported on disk 7 : 2 0 ' reported by bdacheckcluster/bdacheckhw? |
| If a disk goes bad and is replaced can you verify the disk is functional with regards to HDFS? |
| What Sun Network QDR InfiniBand Gateway Switch Ports are free ports?? |
| Does the BDA Starter Rack have a spine switch? |
| Is it possible to multi-cable a BDA Starter Rack and an Exadata 1/8 Rack? |
| Can a third party vendor supplied transceiver and cables be used when connecting a BDA appliance to an Exadata server? |
| Can free ports of Cisco Admin Switch be used for external use? |
| Does the Starter Rack include transceivers for the 10GbE client network? |
| What are the cabling requirements for 6 BDA racks? |
| What is the way to collect a "Full" ILOM snapshot? |
| Will collecting a "Full" ILOM snapshot bring the server down? |
| From an existing ILOM snapshot how can it be determined to be a "Full" or "Normal" snapshot ? |
| Can Oracle Big Data Appliance hardware be modified or customized? |
| If additional NTP servers are required for a BDA environment what is the best way to do that? |
| After migrating to a new network switch what checks can be made to confirm the network ports are up? |
| Is it supported to create virtual IP address (VIP) for BDA nodes? |
| What does it mean if 'MegaCli64 pdlist a0' reports "Firmware state: Failed" for a disk? |
| What does ib0: ipoib_cm_handle_tx_wc in /var/log/messages mean? |
| If a disk reports Unconfigured(good) will it always have to be replaced? |
| Is it ok to downgrade a HBA firmware to an earlier version? |
| Why is "/opt/exportdir" visible only on node03 of the cluster? |
| Is intel turbo boost" enabled on BDA X5.2? |
| What is a quick way to verify the health of the client network in a multirack cluster? |
| If BDA X5-2 enables Intel Turbo Boost 2.0 then why does the directory /sys/devices/system/cpu/cpu0/freq directory appear to be missing? |
| What can you do if logging into the ilom via the CLI and running -> start /SP/console spins? |
| If the ILOM for a node shows an amount of memory as being available but the OS reports less than that could that represent a faulty DIMM? |
| If ftp on the BDA fails with: 550 1000005: Not enough storage is available to process this command, what can be done ? |
| What is the overview of the steps to reboot or reset the state of a PDU without resetting its configuration? |
| It is not possible to access the BDA servers via the ILOM Web UI. Errors are raised like "Unable to launch the application. What can be done? |
| Is it possible to establish IB communications between Exadata and BDA over Infiniband without adding the BDA to the larger IB fabric? ? |
| Is there documentation on how to clear a fault in the ILOM? |
| Does a Mammoth upgrade update the switch firmware? |
| In that case would a switch firmware upgrade come before/after Mammoth? Will it it matter? |
| How can ASR be verified as enabled for all servers? |
| What are SAS Expanders ? |
| What is a SAS HBA? |
| If an IB Controller is not working what can be checked initially? |
| If an ILOM IP address is unreachable is there anything you can try? |
| Is it supported to combine multiple 10GbE ports into a single trunk (using LACP)? |
| Do BDA servers automatically reboot/reset the ILOM? |
| If it is not possible to provide the output from "bdadiag snapshot" on a customer system for security purposes what can be collected to verify a "bad" disk? |
| Is it possible to span a volume group over the 12 available discs of a BDA node? |
| Do we need all IB switches on an IB Fabric tp be on the same mgmt network and subnet? |
| What are the best diagnostics to collect to perform analysis on a disk failure? |
| Does BDA support HSM or Oracle Key Vault? |
| Can you use ipmitool to check if a disk has predictive failures and/or smart alerts? |
| Can you view predictive failures using MegaCli? |
| If the SMART Health Status is saying it is an IMPENDING failure does that indicate a SMART predictive failure? |
| Does swapping out the batteries on the RAID controllers cause downtime to the cluster? Could it be done in a rolling fashion one server at a time, to avoid downtime? |
| What could be the cause of reboot hanging due to being unable to boot into any image, including the rescue image? |
| Why does grub.conf has 16 options in the fallback entry? |
| Is it safe to remove ILOM network from the environment management switch? |
| Is mixing hardware generations in a cluster supported? |
| Can a X6-2 BDA half rack be upgraded to a full rack with 9 new X7-2 servers? |
| Does BDA have a tool like "exabr"? |
| Is RHCK supported on the BDA? |
| Are HGST H7280B520SUN8.0T disks supported on the BDA? |
| Is it allowed to have gaps in the IP addresses for the private network? |
| Is it allowed to used non-sequential IP addresses for the private network? |
| Do the above two statements mean that it should not be possible to run out of space in a private network subnet? |
| Would it be supported to have the ILOMs/switches/admin IPs on different subnets? |
| Is it possible to rebuild data storage as raid 1 with 2xSSD and 12xHDD on the BDA? |
| Is interconnecting a non-Engineered system server to the BDA InfiniBand fabric allowed? |
| Is disabling the internal USB flash drive supported on the BDA? |
| Is there an ILOM firmware that is supported by BDA and supports use of TLS V1.2? |
| After replacing and configuring a failed disk, why is the Disk Cache Policy" "Disk's Default" not "Disabled" as on other disks? |
| Can you swap out your 8TB drives on the BDA and replace those with 4TB drives and still have a supported configuration? |
| References |