Write cache on Unity Storage
How to disable or enable write cache on Unity
SSH into Primary SP
-use OS account “service” with password the same as admin account
-use commands like below to enable or disable
*you only need to run it once and it’ll be applied to both nodes!
svc_cache –get
shows status
3 means enabled
7 means transitioning
8 means disabled
svc_cache –force-enableCacheOperations
force enable cache
Here’s the procedure for maintenance
1) disable write cache option (only need to do once on SP A or B)
2) put Unity SP A or B on service mode
3) on-site engineer will replace parts
4) put Unity SP A or B out of service mode
5) enable write cache option