Provided are a computer program product, system, and method for replicating tracks from a first storage to a second and third storages. A determination is made of a track in the first storage to transfer to the second storage as part of a point-in-time copy relationship and of a stride of tracks including the target track. The stride of tracks including the target track is staged from the first storage to a cache according to the point-in-time copy relationship. The staged stride is destaged from the cache to the second storage. The stride in the cache is transferred to the third storage as part of a mirror copy relationship. The stride of tracks in the cache is demoted in response to destaging the stride of the tracks in the cache to the second storage and transferring the stride of tracks in the cache to the third storage.

Claims

17 · 2 independent · depth 4

17 granted claims

›1.independentA computer program product for copying data from a first storage to a second storage and a third storage, wherein a cache is used to cache data for th…+8

›2.↳ 1The computer program product of claim 1, wherein the cache comprises a first cache, wherein the stride comprises a set of tracks to stripe across a Re…d2

›3.↳ 1The computer program product of claim 1, wherein the point-in-time copy relationship comprises a point-in-time copy relationship with a background cop…d2+3

›4.↳ 3The computer program product of claim 3, wherein the stride of tracks including the target track comprise a first stride of tracks, wherein the operat…d3

›5.↳ 3The computer program product of claim 3, wherein a first controller controls access to the first storage, wherein a second controller includes the cac…d3+1

›7.↳ 1The computer program product of claim 1, wherein the operations further comprise:nreceiving a write to a track in the first storage, wherein the deter…d2+2

›10.independentA system in communication with a first storage, a second storage, a third storage, and a cache, comprising:nat least one processor; andat least one co…+7

›11.↳ 10The system of claim 10, wherein the cache comprises a first cache, wherein the stride comprises a set of tracks to stripe across a Redundant Array of …d2

›12.↳ 10The system of claim 10, wherein the point-in-time copy relationship comprises a point-in-time copy relationship with a background copy operation to co…d2+2

›15.↳ 10The system of claim 10, wherein the operations further comprise:nreceiving a write to a track in the first storage, wherein the determined target trac…d2+2

Classifications

3 codes

IPC · International Patent Classification

Section G — Physics

G06F12/12
G06F3/06
G06F12/00

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2.8 y

1,007 days filing → grant

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non-final + final

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Examiner

Arvind Talukdar

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20140075110 A1	13 Mar 2014

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