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For S5000 and S2600 system, DB is configuration information in storage system, intraday record in the safe system, when power up, controller reads the DB. If there is a DB does not agree with other DB, storage will enter in safe mode, equipment can't normal use, need to synchronize the DB information.
Active-Active work mode: normally called double living mode, two controllers are in activation state, parallel processing the I/O requests from the application server, once a controller failure or offline, another controller will take over his work in time, and shall not affect its current task.
In the treatment of SAN storage system RAID failure, will often set the hot plate of system for free disk, mainly to avoid the system automatically start refactoring.
A set of S5500 write policy set to write-back, after a controller lapsed, LUN's write strategies will translate into through.
Storage systems and network fault diagnosis follow the following principles, diagnose network firstly, and then diagnose network elements; analysis of the high level alarm first, then analysis of low level alarm, which of the following description of scene is wrong?
In the same case of IO environment and disk type, which of the following description of RAID5/RAID10 Performance Comparison is wrong?
Without the deployment of multi-path software, if the storage system map a LUN (Logical Unit Number) to an application server, and with the method of multiple paths are linked together, which of the following opinions about application server situation is correct?
With Linux, a disk output is as follows.
# fdisk -l
Disk /dev/sd 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 2805 16386300 83 Linux
/dev/sdb2 2806 9729 55617030 5 Extended
/dev/sdb5 2806 3825 8193118+ 83 Linux
/dev/sdb6 3826 5100 10241406 83 Linux
/dev/sdb7 5101 5198 787153+ 82 Linux swap / Solaris
/dev/sdb8 5199 6657 11719386 83 Linux
/dev/sdb9 6658 7751 8787523+ 83 Linux
/dev/sdb10 7752 9729 15888253+ 83 Linux
Which of the following opinions are correct?
The following which do not belong to the methods to improve the reliability of the data stored?
Hard drive unit in random IO application is the easiest to become one of bottleneck modules.
The SCSI protocol communication is based on the initiator-target model, encapsulated SCSI of iSCSI protocol also inherit its initiator and target communication model.
In HostAgent scheme, HyperManager and ConsistentAgent communicate through FC link.
Windows platform checking the status of network port is occupied by process can use the command netstat –nab
For common maintenance tools of storage array, which of the following description is wrong?
When create copy of LUN, if the size of the source LUN is 500G, then the LUN of remote array capacity under the target can't be used for copy of LUN.(Select 2 Answers)
Which of the following description of module function within SAN storage array system is correct? (Select 2 Answers)
Under AIX system, the method of checking initiator node name can through smitty devicE.
Through which two ways can detect the hard disk bad way in OceanStor storage system? (Select two Answers)
S5000 cannot create snapshots again to the virtual snapshot which have been created and activateD.
In OceanStor series storage products, Cache mirroring technology is achieved by image channel, in S5000 products, which way is used to realize the Cache mirror?
A customer wants to buy a SAN array, used in oracle and SQLServer database operations, from which target, he should choose appropriate storage array?
A control box of S5500 configured eight FC 300G and eight SATA 1T hard drives.Five FC 300G hard drives made RAID group 0, Five SATA 1TB hard drives made RAID group 1.Now, want to configure global hot spare disk for storage, in this case, how to configure it?
Configure LUN copy in S5000, the capacity of target LUN in LUN copy must be greater than or equal to the source LUN capacity.
To improve performance, hot zone should be distributed in traditional hard disk inside as far as possible, because access data is fast in disk insidE.
At the core of performance in storage system, which of the following indicators are: (Select two Answers)
iSCSI of IP SAN storage array provide security function of CHAP authentication to prevent unauthorized access; IPsec prevent insert, modify, and delete, and prevent eavesdrop, ensure the privacy.
For alarm information analysis method, through the analysis of the alarm, the site can locate the exact location of the fault or reason, can also cooperate with other method to locate the cause of the problem with the alarm system is perfect, engineers can collect system alarms ID number, process library (document or IT) by XX fault, query the fault solution.
What command is used by Linux platform to check nic physical connection status and working mode?
The safe mechanism in storage array through RAID images and data recovery technology protect the safety of key data storage system, practical application can choose SATA, SAS or FC disk as safe drivE.
S5000 configure cache strategy, if use the write back mirroring.Because the mirror operation requires the interaction between two controllers, and the transmission of the datA. Therefore the overall performance is worse than write back mirroring.
In FC arbitration ring architecture, when the device is join or exit, do not have effect on other devices of the ring.
TESTED 28 Apr 2024