Showing posts with label SAN. Show all posts
Showing posts with label SAN. Show all posts

Thursday, March 23, 2023

Dell EMC Unity: SP may panic after being up for 275 - 300 days "DELL EMC Unity XT 480、680 或 880 SP 在連續運行 275 - 300 天後可能會當機"

 

Issue:

Unity XT 480, 680 or 880 SP may panic after being up for 275 - 300 days.

 

Fix:
The fix is available in operating system 
5.2.1.0.5.013 (5.2 SP1).

Workaround:
Proactively reboot SP every 8 months to avoid SP panic. Instructions to reboot an SP:  
Unity: How to Reboot a Storage Processor (User Correctable).

Customer can issue "uptime" connecting to array using SSH by using service account to get SP runtime.
Example below shows uptime is 31 days.

04:30:01 service@xxx spa:~/user# uptime
04:30am  up 31 days  3:41,  2 users,  load average: 29.21, 29.45, 29.51

 

 

Reference:

Dell Unity: SP may panic after being up for 275 - 300 days (Dell Correctable) | Dell 香港

 

Be Careful, DELL EMC Unity XT Will Reboot After 275 Days - Davoud Teimouri - Virtualization and Data Center

 

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Tuesday, December 6, 2022

SAN Storage Migration method

 

Oracle ASM Storage Migration

Huawei SmartMigration

LUN Type

ASM

Block

File System

ASM

Any OS file system

Down Time

Zero

Time needed to build logical relationship
with source and target storage

Fallback Method

Rollback Snapshot

Rollback Snapshot

Implementation Complexity

Need Oracle Knowledge

More Steps

Automatic Cutover

Yes

Yes

Volume Group Information

N/A

Need to export before migration

Scenarios

Oracle Database with ASM

All

                                           

 

Huawei SmartMigration

Host copying

LUN Type

Block

File

File System

Any OS file system

Any OS file system

Down Time

Time needed to build logical relationship
with source and target storage

The application need to be offline during copying

Fallback Method

Rollback Snapshot

Use Source LUN

Implementation Complexity

More Steps

Simpler

Automatic Cutover

Yes

No

Volume Group Information

Need to export before migration

N/A

Scenarios

All

File level

 

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Friday, August 21, 2015

Major SAN storage vendor product line simple mapping

 

image

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