Under Linux platform, one of Multipath installation failure is the old version not completely uninstalled, which of the following methods can solve the problem?(Select 2 Answers)
Writethrough strategy of S5000T system is first write to the cache before write each IO request, mean write successful after written to disk.write back strategy is write each IO request to the cache mean write successful, so the performance of write back strategy is better than writethrough strategy.But write back strategy, exists the risk of loss cache data in system abormal power down.
About iSCSI protocol implementation of three parts, which describe are right? (Select three
Answers)
Cache mirroring technology means that data is written to a controller, at the same time, to which module will the data be written?
Link bandwidth of Storage array remote replication data transmission is not adjusteD.
In standard optical fiber environment, contains node, port, link and other components, which of
the following is true? (Select three Answers)
For snapshot , LUN copy and remote replication of storage array, which of the following statement is true? (Select 3 Answers)
For common maintenance tools of storage array, which of the following description is wrong?
When deploy N8000 system by ISM, which of the following characteristic of the management software are not used?
The default mode of FC host interface and host communication is arbitrated loop in SAN storage array, the host side HBA card usually adopts adaptive communication mode
when SAN storage array power up, enter into MML mode, sys status check System Running Status: ( normal mode ) normal mode shows power up successful for the system.If it is not normal mode, can judge power up failure for the system.This judgment method of system startup anomaly is correct.
The failure of install multipath is mostly due to compatibility, which components mainly needs to consider compatible when install multipath? (Select three Answers)
In the same case of IO environment and disk type, which of the following description of RAID5/RAID10 Performance Comparison is wrong?
Running df output on AIX ias follows:
# df /kyleFilesystem 512-blocks Free %Used Iused %Iused Mounted on /dev/hd2 16056320 1925384 89% 110034 100% /kyle
At this time, it can't create a file or folder in this /Kyle directory.
For storage array LUN copy function, same LUN can't do multiple incremental source of LUN copy.
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?
In the storage array, which of the following situations would not lead to a snapshot fault?
Because of differences in the operating system itself, each of multi-path software has different compatible versions under the different operating systems, and even different versions of the same operating system, may have different multipath versions, so before installing the multipath software, need to query version supporting table, confirm the compatibility between multipath and OS, HBA carD.
Compared with SCSI protocol in the actual application, which belongs to the advantage of the iSCSI? (Select three Answers)
Under Linux, which are the basic principles of the dd command test performance tuning? (Select 3 Answers)
What kind of Remote copy link in array can divided into according to the order of the controller? (Select 2 Answers)
For Huawei's storage system, which of the following description of global hot dish is correct? (Select 3 Answers)
Synchronous remote replication connection between two storage array can use FC link or iSCSI link, and which can use the two kinds of links to connect at the same timE.
The characteristics of the internal management is management network separated from production data link.
LUN copy S5000 incremental must interrupt host operations of reading and writing for the data of S5000 source LUN
The most important three part of SAN network in technically: device interfaces (E. g, SCSI, fiber channel and ESCON, etC. ), connection device (switches, gateway, router and Hub, etC. ) and communication control protocol (E. g iSCSI and FC, etC. ) the three components plus additional storage devices and servers, constructed SAN system from the component, the SAN can be divided into host,HBA, switches, storage devices of the two is not match.
If plan bank of SAN storage system, use to store customer orders and account information, please select the most appropriate level of RAID
In the Linux platform, the host connected to the storage array, which of the following statement is wrong?
Through which two ways can detect the hard disk bad way in OceanStor storage system? (Select two Answers)
Substitution method is to use a normal part to replace a suspected abnormal part, so as to achieve the parts of the aim of locating faults and troubleshooting, can be a fiber optic jumper, a cable, a controller or a cascade modulE.
To run the first line which lsscsi command export at the linux which computer only connect FC storage as follows:
(0:0:0:0) disk VMware, VMware Virtual S 1.0 /dev/sda
(1:0:0:0) disk Huawei, S2600 -
(1:0:0:1) disk Huawei, S2600 -
(1:0:0:2) disk Huawei, S2600 -
(2:0:1:0) disk Huawei, S2600 /dev/sdb
(2:0:1:1) disk Huawei, S2600 /dev/sdc
(2:0:1:2) disk Huawei, S2600 /dev/sdd
Known 0:0:0:0 is the only local disk for this machine
Which of the following are true? (Select 3 Answers)
Multipath install failure in Windows platform in the case of old version do not completely uninstall, which of the following method can solve the problem? (Select two Answers)
For storage arrays products, What may cause the failure of roll back the snapshot? (Select three Answers)
SAN storage system fault diagnosis, through ISM log can't judge fault, which log file can through
the further analysis system ? (Select three Answers)
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