This article presents 3 new cool features introduced in Oracle Exadata Database Machine X7.
- Online Flash Disk Replacement
Exadata Storage servers (both HC and EF storage servers) has Flash disks. Like Hard disks, Flash disks may fail any time and need to be replaced with new disks. Previous versions of Exadata allowed online flash disk replacement in Extreme Flash Storage Server only.
Starting with X7-2, you can perform online replacement of Flash disks in HC storage server also.
- Do-Not-Service LED on Storage Servers
Powering of Exadata storage server in a cluster with reduced redundancy may forcefully dismount Oracle ASM Disk group and thus affects the Database availability. To prevent the administrators from mistakenly powering of the storage server with reduced redundancy, Storage servers on Exadata database machine X7 comes with a new LED called Do-Not-Service.
This LED indicates whether it’s safe to power off the storage server or not. Starting with Exadata Software 18c(18.1.0), the Do-Not-Service LED is turned on automatically in real-time when ASM Disk group redundancy is reduced and turned off when redundancy is restored. This visually indicates to field engineers whether it’s safe to power off the storage server or not.
- New M.2 Disks for System Partitions
Previous versions of Exadata Storage Servers used portions of first two disks (slot 0 and slot 1) for system partitions. System partition is where Operating system and Exadata Storage Server software is installed. Starting with X7 version, Oracle introduced two M.2 disks dedicated for system partitions. This arrangement separates system I/O from data I/O and allows all the hard disks to be dedicated to storing data only. Additionally , you perform online replacement of these M.2 disks.