[操作疑難] Synology 裝 SSD Cache

用左 1513+ 一年多d, 5隻Toshiba 3TB RAID 5, 12TB 好夠用
最近換埋 switch 做 802.3ad 3Gbps, 幾部機一齊 access 都做到 2xxMB/s upload
但最近部 NAS 開始做埋 Windows iSCSI 同埋 ESXi NFS Storage, 其他機又拎file
一齊access 果陣細file 傳送同個folder list反應該好慢
如果改做 6TB x3 加 SSD Read Write Cache 幫助大唔大? SSD Cache 可唔可以裝係 eSATA 度?
有無人試過差幾遠?

You need 2 identical SSDs in the compatible list for SSD cache to work on Synology.

Using 6TB HDDs for RAID5 is not recommended - the risk of having data corruption during rebuild is high, even if you are using enterprise grade RAID disks like WD RE.

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回覆 2# alanh999

From DSM 5.1, only 1 SSD is needed for caching only.

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師兄個用到咁淨嘅NAS, 係家用㗎?

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師兄個用到咁淨嘅NAS, 係家用㗎?
takayo72 發表於 2015-3-29 12:29 PM


係家用,大部分 Laptop, 同一部 ESXi 所以好多 data 放係 NAS

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回覆 2# alanh999

Data corruption 係指 rebuild 果陣死多隻定其他原因?
我本身有 Online Backup (另一套NAS), 同Offline Backup, 真無死左RAID 都種有得restore
最多down 幾個鐘-1日

回覆 3# voigtlander

Read-Write cache 要 2隻

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回覆 6# BB_HON


    Mainly the concern on recovering a RAID 5 array with really big HDDs like 6TB is unrecoverable read error (URE).
Once this happens during rebuild all data on the array is gone.

Doing scheduled data scrubbing will help to reduce the chance of having URE but it's not guaranteed.

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Keep 返而家套 RAID, 買個 DX213 做 SSD Cache 又得唔得呢?

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Keep 返而家套 RAID, 買個 DX213 做 SSD Cache 又得唔得呢?
BB_HON 發表於 2015-4-2 23:20


得,不過我唔知DX213買幾$,差唔多的話不如DX513

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如果用1隻SSD 做Cache可做Read Cache, R/W的話就要2隻SSD

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